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Vol. 12, No. 17 29 April 1977 NATIONAL CENTER FOR ATMOSPHERIC RESEARCH PORTABLE INSTRUMENT DEVELOPED FOR TRACE GAS MEASUREMENT A new instrument for measuring small concentra- tions of trace gases has been developed by the trace gas measurements group of the NCAR Upper Atmosphere Project (UAP). Leroy Heidt (group head), Richard Lueb, Joseph Krasnec, and Walter Pollock have col- laborated over the past year with Robert Woods of Sandia Laboratories, Albuquerque, New Mexico, to develop the instrument, called a mobile gas chromato- graph (MGC). Gas chromatographs are used to identify individ- ual gases and record the result on a "chromatogram." UAP scientists have used gas chromatography for several years to detect atmospheric gases that were as sparse as one part per million in volume (trace gases). "With the mobile gas chromatograph, how- ever, we have the added capability to measure low concentrations of the chlorine gases in the parts per trillion range," says Leroy. One of the most important features of the new gas chromatograph is its portability. Until now, most gas chromatographs were large and heavy, as well as pressure- and temperature-sensitive, so they had to be used in the laboratory. But there were several . disadvantages in waiting until samples could be retrieved and transported in order to be analyzed. For example, some atmospheric compounds, such as carbon tetrachloride, chloroform, and methyl chloride, have been known to react with their sampling con- tainers or to break down during the warming of the sample to room temperature. In addition, some of these trace species degrade further during storage. "The MGC's ability to measure gases as they are collected will eliminate such problems," Leroy says. Two mobile gas chromatographs, one to be used on aircraft and the other on balloons, have been designed to measure gases directly and telemeter the readings to a control station on the ground. Both units also record their measurements on a strip chart, allowing cross comparisons with measurements of trace gases from cryogenic samplers used on balloons. And since the chromatographs can be flown on balloons, which usually reach a maximum altitude of 45 km, as well as on aircraft, which reach about 13 km, they can be used to obtain a vertical profile of atmospheric gases from the ground up to 45 km. The MGC has four main components: (1) a sample injection mechanism; (2) a column consisting of a tube packed with a material that separates various gases when a carrier gas is pushed through it; Leroy Heidt make adjutmnents to the mobiie gas ckromatograph developed 6o& use aboard aiLcraft. The 45 kg intrument is opeated manuatU by the investigator. (Photo by Anthony GalvLn II1.) (3) an electron capture detector that measures the concentrations of each trace species as it emerges from the column by comparing it with a standard, such as clean air or a gas premixed in the laboratory; and (4) a recorder to monitor the output of the detector. The aircraft version of the chromatograph has been tested in the troposphere aboard an NCAR Queen Air. Aircraft use enables study of the composition of air being exchanged between the troposphere and the stratosphere. Joe Krasnec will use the chromato- graph on the NCAR Electra this summer to measure and to try to determine the tropical sources of nitrous oxides, carbon tetrachloride, and methyl chloride during the Monsoon Experiment (MONEX 77). MONEX 77 (continued) This Week in Staff Notz. Portable Instrument To Measure Trace Gases Computing Facility Advisory Panel Meets Visitors Paul Crutzen Appointed AQD Director Computing Facility Statistics Job Openings Staff From OTA Visit NCAR Announcements Calendar Notes
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Page 1: PORTABLE INSTRUMENT DEVELOPED GAS MEASUREMENT

Vol. 12, No. 17

29 April 1977

NATIONAL CENTER FOR ATMOSPHERIC RESEARCH

PORTABLE INSTRUMENT DEVELOPED FOR TRACE GAS MEASUREMENT

A new instrument for measuring small concentra-tions of trace gases has been developed by the tracegas measurements group of the NCAR Upper AtmosphereProject (UAP). Leroy Heidt (group head), RichardLueb, Joseph Krasnec, and Walter Pollock have col-laborated over the past year with Robert Woods ofSandia Laboratories, Albuquerque, New Mexico, todevelop the instrument, called a mobile gas chromato-graph (MGC).

Gas chromatographs are used to identify individ-ual gases and record the result on a "chromatogram."UAP scientists have used gas chromatography forseveral years to detect atmospheric gases that wereas sparse as one part per million in volume (tracegases). "With the mobile gas chromatograph, how-ever, we have the added capability to measure lowconcentrations of the chlorine gases in the partsper trillion range," says Leroy.

One of the most important features of the new gaschromatograph is its portability. Until now, mostgas chromatographs were large and heavy, as well aspressure- and temperature-sensitive, so they had tobe used in the laboratory. But there were several. disadvantages in waiting until samples could beretrieved and transported in order to be analyzed.For example, some atmospheric compounds, such ascarbon tetrachloride, chloroform, and methyl chloride,have been known to react with their sampling con-tainers or to break down during the warming of thesample to room temperature. In addition, some ofthese trace species degrade further during storage."The MGC's ability to measure gases as they arecollected will eliminate such problems," Leroy says.

Two mobile gas chromatographs, one to be used onaircraft and the other on balloons, have been designedto measure gases directly and telemeter the readingsto a control station on the ground. Both units alsorecord their measurements on a strip chart, allowingcross comparisons with measurements of trace gasesfrom cryogenic samplers used on balloons. And sincethe chromatographs can be flown on balloons, whichusually reach a maximum altitude of 45 km, as well ason aircraft, which reach about 13 km, they can beused to obtain a vertical profile of atmosphericgases from the ground up to 45 km.

The MGC has four main components: (1) a sampleinjection mechanism; (2) a column consisting of atube packed with a material that separates variousgases when a carrier gas is pushed through it;

Leroy Heidt make adjutmnents to the mobiie gasckromatograph developed 6o& use aboard aiLcraft.The 45 kg intrument is opeated manuatU by theinvestigator. (Photo by Anthony GalvLn II1.)

(3) an electron capture detector that measures theconcentrations of each trace species as it emergesfrom the column by comparing it with a standard,such as clean air or a gas premixed in thelaboratory; and (4) a recorder to monitor theoutput of the detector.

The aircraft version of the chromatograph hasbeen tested in the troposphere aboard an NCAR QueenAir. Aircraft use enables study of the compositionof air being exchanged between the troposphere andthe stratosphere. Joe Krasnec will use the chromato-graph on the NCAR Electra this summer to measure andto try to determine the tropical sources of nitrousoxides, carbon tetrachloride, and methyl chlorideduring the Monsoon Experiment (MONEX 77). MONEX 77

(continued)

This Week in Staff Notz.

Portable Instrument To Measure Trace Gases Computing Facility Advisory Panel Meets VisitorsPaul Crutzen Appointed AQD Director Computing Facility Statistics Job OpeningsStaff From OTA Visit NCAR Announcements Calendar Notes

Page 2: PORTABLE INSTRUMENT DEVELOPED GAS MEASUREMENT

2/Staff Notes/29 April 1977

is a precursor to a major monsoon experiment,MONEX 79, which is part of the Global AtmosphericResearch Program (GARP) First GARP Global Experiment(FGGE).

The MGC designed for use on balloon flights willbe used for stratospheric sampling. A balloon testflight of the chromatograph is scheduled for early

summer, to be followed by a major flight in Julyin Canada. According to Paul Crutzen, newlyappointed director of the Atmospheric QualityDivision, investigators may also be able to carrythe unit, which weighs only 23 kg, into the fieldin a backpack to make boundary-layer measurementsof gas fluxes between soils and air and betweenplants and air. 9 JR

PAUL CRUTZEN APPOINTED AQD DIRECTOR

Paul Crutzen has accepted the position ofdirector of the NCAR Atmospheric Quality Division I(AQD). The appointment, which will be effectiveon 1 May, was made on 20 April by NCAR directorFrancis Bretherton after review and authorizationby the UCAR Board of Trustees. AQD comprises theUpper Atmosphere Project (UAP) and the AerosolProject.

Paul has been dividing his time between twohalf-time positions since he came to Boulder in1973: in UAP at NCAR and as a consultant in theAeronomy Laboratory of the National Oceanic andAtmospheric Administration (NOAA). He is also anaffiliate professor at Colorado State University inFt. Collins. Paul will assume full-time responsi-bilities at NCAR around October.

Paul's research has dealt primarily with thechemistry and dynamics of the upper atmosphere, andhe is known for his modeling work on pollution of theozone layer. He says, "As atmospheric chemistrygrows in complexity, the standards for measurementand analysis of chemicals are becoming increasinglyhigh and difficult to meet, so in order to make thebest progress, atmospheric chemists will need tointeract and collaborate more with each other andwith researchers in related fields."

Regarding plans for AQD, Paul says, "I'd like tosee increased collaboration with university investi-gators in planning and carrying out both theoreticaland field research. Particularly, I'd like moreemphasis on tropospheric gas chemistry studies on aglobal scale. Also, I think that we will benefitfrom further interaction among the various projectsand divisions within NCAR."

Paul was born in Amsterdam, Holland. He attendedthe Institute of Meteorology of the University ofStockholm, Sweden, receiving an undergraduate degreein 1963 and a Ph.D. in 1968. His undergraduate

Stctf Nota is published weekly by the PublicationsOffice of the National Center for AtmosphericResearch, P.O. Box 3000, Boulder, Colorado 80307.

Editor: Lynne MesirowWriters: Merry Maisel, Lynne Mesirow, Juli RewProduction Assistants: Jan Emery, Janis Romancik

Copy deadline is 5:00 p.m. on Tuesday for publica-tion on Friday. Office: Mesa Laboratory room 259.Phone: (303) 494-5151, ext. 644.

Paut Crutzen (Photo by Robert Bumpa.)

degree was in mathematical statistics and meteorology,and most of his graduate studies were in dynamics.At the end of his doctoral studies Paul's interestshifted to atmospheric photochemistry. From 1968to 1971, he was a postdoctoral visitor supportedby the European Space Research Organization at theClarendon Laboratory of Oxford University, England.He returned to his alma mater for two years beforecoming to the United States.

The author and coauthor of over 35 papers, Paulis a consultant to the United Nations EnvironmentalProgram, a member of the International OzoneCommission, the International Commission of theUpper Atmosphere, and the NASA StratosphericResearch Advisory Committee. He has been calledon several occasions to testify before Congressionalcommittees about anthropogenic effects on thestratosphere. e LM A

Page 3: PORTABLE INSTRUMENT DEVELOPED GAS MEASUREMENT

3/Staff Notes/29 April 1977

STAFF FROM OTA VISIT NCAR

Two representatives of the Office of TechnologyAssessment (OTA) were at the Mesa Laboratory onMonday, 25 April, discussing scientific programs andplans with NCAR managers and scientists. They wereAlbert Teich, consultant to OTA, and Carolee McBee,leader of the National Laboratories Project of theOTA Research and Development Policies and PrioritiesProgram. OTA is an arm of the Congress set upseveral years ago to help Congress assess thescientific and technical health of the nation and toanalyze the potential direct and indirect societalimpact of current and emerging technologies.

At NCAR Teich and McBee met with UCAR presidentFrancis Bretherton; NCAR executive director JohnFiror; NCAR assistant director Edwin Wolff; CliffordMurino, director of the Atmospheric Technology

Division; Patrick Squires, director of the NationalHail Research Experiment (NHRE) Division; DavidBargen, manager of the Research Systems Facility;Robert Serafin, manager of the Field ObservingFacility; and Richard Somerville, leader of theNumerical Weather Prediction (NWP) Project. Theyalso talked with NCAR scientists David Baumhefner(NWP), Brant Foote (NHRE), Peter Gilman (HighAltitude Observatory), Margaret LeMone (GARP AtlanticTropical Experiment Project), Harry van Loon(Empirical Studies Project), and Warren Washington(General Circulation Model Coordination andOperations Group). They also spoke to FrancisPerkins, an Advanced Study Program senior post-doctoral fellow from Princeton University, and hadan informal discussion with members of the NHREstaff. 9

COMPUTING FACILITY ADVISORY PANEL MEETS

The Computing Facility advisory panel met in. the Fleischmann Building on Monday, 25 April.After introductory remarks from Clifford Murino,director of the Atmospheric Technology Division(ATD), Stuart Patterson, manager of the ComputingFacility, reported on the status of the acquisitionof new computer hardware. The panel discussed andmade recommendations on 18 large requests forcomputer time. The next meeting of the advisorypanel is tentatively planned for 13 October at NCAR. ,

Attending the meeting were the following panel '-members: Robert Carovillano, chairman, BostonCollege; Robert Dickinson, NCAR; Eugene Isaacson,Courant Institute of Mathematical Sciences, NewYork University; John Killeen, Lawrence LivermoreLaboratory; Carl Kreitzberg, Drexel University;Yoshimitsu Ogura, the University of Illinois; PeterRhines, Woods Hole Oceanographic Institution; and0. Richard White, NCAR. Cecil Leith of NCAR wasunable to attend. Also present at the meeting was Shown heAe at the Computing Facihity advisoty paneGiorgio Tesi, the observer from the National meeting ae (left to )ight) Catt Ktehitzberg,Science Foundation. 0. Richad White, Stuaint PatteAon, Robet

Ca;ovUifano, and Cei6ord Muwino. (Photo byAnthony Galvdn III.)

Page 4: PORTABLE INSTRUMENT DEVELOPED GAS MEASUREMENT

4/Staff Notes/29 April 1977

COMPUTING FACILITY OPERATIONAL STATISTICS

CRU Total RJE Tape TLIB TBM TBM itsDate Uptime Downtime (X10 ) Jobs Jobs Mounts Requests Requests (X10 )

4/18 ,21.0 1.P,.8F,1.2V 28.0 1282 383 502 1198 537 48.64/19 19.2 1.P, 3.8V 21.6 1148 289 439 963 371 36.04/20 20.7 1.P,.8F,1.5V 26.7 1239 333 437 1039 440 33.64/21 21.5 1.P, 1.5F 31.1 1297 320 490 1030 493 38.44/22 18.7 1.P,2.3F,2.V 22.5 1061 242 381 1076 494 42.64/23 23.5 .5V 34.5 677 243 385 935 249 24.04/24 23.0 .8F,.2V 38.7 603 190 296 834 170 12.6

1Downtime is given in hours and is of three types: P (preventive maintenance), F (hardwarefailure), and V (other downtime, various causes).

ANNOUNCEMENTS

THIS IS NATIONAL SECRETARIES WEEK

Today is the last day of National SecretariesWeek for 1977. Each year the National SecretariesAssociation (International) sets aside one week torecognize secretaries in all fields as professionals.If you didn't mark the occasion this week, perhapsnext week would be the time.

NATIONAL DISASTER SURVIVAL TEST TO BEBROADCAST

"The National Disaster Survival Test," to beaired on national television this Sunday, 1 May,will give you and your family an opportunity toassess your survival skills and learn somesurvival techniques. It will be shown in theDenver area on channel 4 from 8:00 to 9:30 p.m.Blair Smallwood, NCAR safety officer, says, "Weare encouraging NCAR staff members and theirfamilies to watch the program and take the survivaltest." The test is designed to provide viewerswith their "survival quotient"--an indication ofhow well they would be prepared in the event of afire, flood, tornado, hurricane, earthquake, orother potentially dangerous situation. Copies ofthe official test forms have been distributed tothe staff. You may pick up extra copies at theentrance to the Mesa Lab cafeteria; staff membersfrom other NCAR locations may obtain extra copiesby calling Blair at ext. 341.

GRAPHICS REPORTS MISSING MIRROR

The Graphics Group reports that a 14 x 16 in.mirror, which is a vital part of their opaqueprojector, has been misplaced. It was placed insidethe first basement entrance at the tree plaza lastFriday (22 April) afternoon and may have been mis-taken for an item to be discarded. If you know thewhereabouts of the mirror, please return it to theGraphics Group in Mesa Lab room 40 or to the placewhere it was found, or call Bill Hemphill atext. 589.

CAFETERIA PRICES RAISED

It has been two years since NCAR took overoperation of the Mesa Laboratory cafeteria. Andalthough the cost of food has risen steadily inthat time, prices in the cafeteria have remainedconstant. However, it has become necessary toraise the prices of some items in order to keepthe cafeteria subsidy near its current level,according to Rose Bridgewater, Office Servicesmanager. Beginning Monday, 2 May, the new prices,averaging an 8% increase, will be in effect. Rosesays, "The cafeteria will continue to serve theNCAR staff and visitors in the most efficient waypossible."

ATTENTION: SHUTTLE BUS RIDERS

NCAR provides a shuttle bus service between theMesa Laboratory and the vicinity of Broadway andTable Mesa Drive for the convenience of staffmembers and visitors. In addition to the usualpick-up and drop-off points at the Mesa Lab, theGeorge Reynolds Library, and the King Soopersparking lot, passengers may board or leave the busat the bottom of the NCAR hill. However, this isnot possible at other points on the NCAR road, suchas the pump house road, for reasons of safety andefficiency. Questions about the shuttle bus servicemay be directed to Rose Bridgewater at ext. 509.

PROMOTIONS

Bobbie Kahl: from clerk typist to accounts payableclerk. PSRB-3 room 348, ext. 77-642.

Joseph Vialpando: from custodian to outside mainte-nance trainee. ML room 021A, ext. 341.

Page 5: PORTABLE INSTRUMENT DEVELOPED GAS MEASUREMENT

5/Staff Notes/29 April 1977

VISITORS

Theresa Joska: from precipitation reduction crewmember to precipitation network crew member withthe National Hail Research Experiment. Grover,Colorado.

Patricia West: from Field Observing Facilitydraftsperson to Research Systems Facility drafts-person. PSRB-3 room 206, ext. 77-764.

NEW STAFF MEMBER

Cindy Myers: Computer operator aide with theComputing Facility. ML room 29, ext. 536.

PHONE AND ROOM CHANGE

Katherine Forderhase

DEPARTURE

Edward Crankshaw

ext. 368 ML room 42E

15 April

SHORT-TERM

Douglas Boudra, University of Michigan. Field ofinterest: Modeling the influence of the Great Lakeson the regional atmosphere. 29 April-20 May.Computing carrels, dial "0" for paging service.-- Computing FacilityPatrick Freeman, University of Utah. Field ofinterest: Radiation processes in cloudy and hazyatmospheres. 28 April-l May. Computing carrel 18,dial "0" for paging service.-- Computing FacilityDavid Leslie, University of London, United Kingdom.Field of interest: Turbulence. 28-30 April.ML room 520D, ext. 409.--Jackson Herring, Advanced Study ProgramMichael Love, University of London, United Kingdom.Field of interest: Turbulence. 28-30 April.ML room 520D, ext. 409.--Jackson Herring, Advanced Study Program

Monty Peffley, Florida State University. Field ofinterest: Simulation of time dependent coastalupwelling circulation. 28 April-10 May. Computingcarrels, dial "0" for paging service.-- Computing FacilityPeter Rhines, Woods Hole Oceanographic Institution.Fields of interest: mean flow/wave interaction,cascades and propagation in baroclinic eddies.25 April-7 May. Computing carrels, dial "0" forpaging service.-- Computing Facility

TRANSFERS

Page 6: PORTABLE INSTRUMENT DEVELOPED GAS MEASUREMENT

as of 27 April 1977

NCAR is an equal opportunity/affirmative action employer

Women and minority applicants are encouraged to identify themselves.A copy of our A ffirmative Action Plan is available for review.

Staff members and those on lay-off who wish to be considered for a position shouldcontact the Employment Coordinator within two weeks after the job is first posted.If qualified, these persons will be given first consideration; if possible, the positionwill be filled from this group. After the two-week period, if no current or laid-offemployee is selected to fill the position persons from outside NCAR will be considered.For more information, please contact the Personnel Office (ext. 555 or 569).

REGULAR (Full-time)

ADMINISTRATIVE SECRETARY: For the Atmospheric Aero-sols Project to assist the Project Leader in admin-istrative duties as much as possible. Will setpriorities, organize clerical duties and superviseone full-time secretary. Will type letters, memos,form and technical manuscripts for project members.Will maintain project files, monitor monthly B&Estatements and communicate by phone and letter with

various levels of people outside of NCAR. Willcollect, organize and edit material for quarterlymanagement report; will interpret and apply UCARpolicies and handle confidential material. Will

arrange logistics for visiting scientists andprovide clerical and logistic support for committees,meetings and workshops sponsored by the project andarrange travel for project members. Requirements

include: high school diploma or equivalent; exper-tise in English grammar, spelling and composition;ability to initiate and draft correspondence andresponses to correspondence; 4-5 years responsiblesecretarial experience (prefer scientific secretarial

experience); typing 60+ WPM; ability to edit papers,reports and correspondence; secretarial or businessschool may also substitute for 1-2 years experience.

Experience with technical manuscripts is preferred.Non-exempt range 19. Anticipated hire-in salary:$805-925/month. This position may be filled 3 May1977.

ARCHITECT: For the Facilities Planning and DesignDepartment to prepare documents and reports relatedto planning, design and construction of new facil-ities or remodeling of existing facilities, in-cluding project management, preparation of costestimates and construction drawings, designing andwriting specifications for new construction andmodifications of facilities, planning for short-and long-range facility needs, supervising workdone by outside consultants and contractors, andinsuring compliance with OSHA and NCAR safety

requirements. Requirements include: minimum of5 years experience working under a licensed archi-tect in an architect's office, in the physical

plant planning office of a large college or uni-versity or in the plant facilities department ofa large industrial or commercial concern; B.S. inarchitecture or architectural engineering;licensed by examination; experience in the followingareas: space planning, working drawings, specifica-tions, cost estimating, construction inspection/supervision and project management; a working know-ledge of: space inventory and allocation systems

environmental impact studies, OSHA, EPA and otherregulatory related activities; background in remodel-

ing of existing structures is desirable. Exemptrange 56. Anticipated hire-in salary: $13,900-17,400/year. This position may be filled by anin-house applicant after 19 April 1977 or by anoutside applicant after 5 May 1977.

CUSTODIAN: For the Plant Maintenance Department todust and wash walls, wash and polish furniture; todump trash, wash ash trays and trash receptacles; toclean spill spots and to dust, mop, wax and bufffloors. Applicants must be physically able to lift

5 gallon buckets of wax or water, to operate 1,000pound floor cleaning machine and 20 inch buffingmachine and to move desks and other heavy equipment.The hours for this position are 6:00 p.m. - 2:00 a.m.,Monday through Friday. Non-exempt range 16. Hire-insalary: $590/month. This position may be filledafter 3 May 1977.

PROGRAMMER/ANALYST I: For the Administrative Com-puting Department to be responsible for developingdetailed programming plans and instructions requiredfor the implementation of new computer based systemsand the modification and maintenance of existingsystems. Will assist with portions of the activitiesrequired for the analysis, design and implementationof Administrative Computer Systems. The work will

Page 7: PORTABLE INSTRUMENT DEVELOPED GAS MEASUREMENT

utilize improved productivity techniques includingstructured design, structured coding and team approach.Requirements include: bachelor's degree in computerscience or mathematics or 2 additional years experi-ence as programmer analyst; 2 years experience as anapplications programmer with emphasis in structuredtechniques and on-line systems, including at least 6months experience in writing or maintaining RPG-oriented systems; background in writing businessapplications systems primarily in a high-level lan-guage; working knowledge of data base managementsystem concepts and philosophy; ability to maintaineffective working relationships with others; workingknowledge of improved programming productivity tech-niques including structured design, structured coding,and the programming team concept. Exempt range 54.Anticipated hire-in salary: $11,400-14,300/year.This position may be filled after 3 May 1977 by an in-house applicant or after 19 May 1977 by an outsideapplicant.

PROGRAMMER III: In support of the Coronal DynamicsProject at the High Altitude Observatory to prin-cipally do the development, testing and verifica-tion of software. Software products are requiredfor the control and data collection tasks associ-ated with a solar telescope system designed toobserve the corona and prominences. Sufficientsoftware to process, analyze and archive digitaldata from this system is also required. Thesesoftware tasks are to be undertaken in cooperationwith the engineering and scientific project staff.Software is required for the control of instrumentmodes, manipulation of parallel data systems forrecording on magnetic tape, real-time data displaysfor observer interaction (all employing a DEC PCP11/10 computer) and programs for the editing oftapes, data copying, compression and reformatting,and programs for the display and analysis of pro-cessed results (employing both PDD 11/70 and largecomputers). Applicants should be prepared to workat the high altitude observing site (Mauna Loa,Hawaii - altitude approx. 13,000 feet) for extendedperiods (6 months at a time, once or twice before9/81). Requirements include: B.S. in computerscience, mathematics, physics or related field, atleast 3 years applicable experience in assemblylanguage programming for interrupt drivers and bitoriented peripheral drivers and FORTRAN programmingwith a small disk oriented system is necessary andat least one of the 3 years should include relevantexperience with minicomputer systems (e.g. DEC PDP11 series or equivalent). Experience in the han-dling of data in an area of physical research andreal-time experiment control are necessary. Fiveyears experience in programming and data manipula-tion can be substituted for the degree. This isa term appointment to last through 9/81. Exemptrange 58. Anticipated hire-in salary: $16,800.21,000/year. This position may be filled after19 April 1977 by an in-house applicant or after5 May 1977 by an outside applicant.

SYSTEMS SOFTWARE PROGRAMMER I II: For the ComputingFacility to do maintenance and development work onNCAR's FORTRAN compilers. One of these is currentlyon the CDC 7600 and is being slowly upgraded to theFORTREV specification. Another will be acquired with

the delivery of the CRAY I computer system. Addi-tional compilers will be procured as our proposedfront end system is developed late in 1977 and 1978.Candidate's general programming experience shouldemphasize the following: design, formulation andimplementation of complex computer system softwareprograms. May be responsible for maintenance oflarge portions of a software system. Designs, codes,and performs checkout of software system elementsneeded to achieve specific objectives sought by anoverall system software design. Reviews hardwarecapabilities and new technological changes; deter-mines cost and quality choices as a basis of mea-suring the feasibility of various system softwaredesign approaches. Submits, for management approval,proposals for new or revised system software design.Formulates design specifications to meet the objec-tives of new or revised software systems. Writesgeneral and/or detailed flow charts for major newor revised complex software systems. Is responsiblefor coding, checkout, maintenance and documentationof any software system designed for NCAR or furnishedby vendors. Attains and maintains expert knowledgeof the designated areas by following developmentsand the literature of the areas. Requirementsinclude: M.S. in computer science, math or physicsOR equivalent, 5-8 years as a systems programmer withthe last 2-3 years dedicated to compiler maintenanceand development. Exempt range 58. Anticipated hire-in salary: $16,800-21,00/year. This position maybe filled at any time.

REGULAR (part-time)

EMPLOYMENT ASSISTANT (half-time): For the PersonnelOffice to perform a variety of clerical, secretarialand receptionist duties primarily for the EmploymentUnit. Greets and assists applicants, employees andsupervisors who call or come in to the office. Per-forms initial screening to determime if applicantsqualify for current openings, if they should beconsidered further or if their applications shouldbe placed on file. Maintains unit's filing systems,types job openings lists, correspondence and reportsand responds to general and specific inquiries aboutemployment opportunities. Handles a heavy volume ofphone calls. This is a shared position where 2 peoplework together closely; will work 2 days one week and3 days the next. Requirements include: high schooldiploma or equivalent; 2 years responsible clericalexperience (personnel experience preferred); know-ledge of standard office procedures and methods;typing at 55+ WPM; skill at working with the publiceffectively, especially in difficult situations;skill at detail work and skill at setting prioritiesand working under pressure with constant interruptions.Additional job-related education or training may besubstituted for a part of the experience requirement.Non-exempt range 18. Anticipated hire-in salary:$725-835/month (FTE). This position may be filledafter 10 May 1977 and is available 6 June 1977.Internal and external applicants will be consideredsimultaneously.

Page 8: PORTABLE INSTRUMENT DEVELOPED GAS MEASUREMENT

SPECIAL-PROJECT (Full-time)

METEOROLOGIST: Acting in a senior capacity withthe USAMONEX planning activity at NCAR, and to beassigned to the International MONEX Planning Group,New Delhi, India; the latter group will consist ofa Director, several senior meteorologists fromcountries participating in MONEX, and a supportstaff. The IMPG will be responsible for completingthe scientific plan for MONEX (Summer Phase) andfor developing the implementation plan for theinternational field phase in which the activitiesof the participating countries will be coordinatedto meet the scientific goals of MONEX. To supportthe field phase, the IMPG will plan and makearrangements for: coordination of land-basedoperations, and research aircraft and ship opera-tions; communications; and data collection andanalysis to supply the timely information neededfor operational purposes. To support the post-field-phase research, the IMPG will plan and makearrangements for the collection of required MONEXdata and the assembly of the internationally-agreed-upon data sets including data validation. Minimumrequirements include: B.S. in meteorology or relatedfield and experience as a senior member of a researchteam or field experiment group, or MS. or Ph.D. inmeteorology or equivalent field; 3 years directpersonal experience in tropical research and planningactivities, preferably in monsoon areas, includingexperience in a majority of the following--researchin tropical meteorology, field analysis and fore-casting operations, data management planning andimplementation, evaluation of scientific planswith respect to required logistical and operationalsupport, planning for and implementation of logis-tical and operational support, planning for andimplementation of field communications, planning forand coordination of deployment of research aircraftand ships. In addition, must be able to demonstrateskills at: use of mature scientific and managementjudgment; ability to operate at a senior staff level,including ability to make decisions independentlyand identify problems that need referral throughappropriate channels; ability to work with colleaguesfrom other countries; and ability to take initiative.Must be able to relocate to India, to devote con-siderable time and effort during the field phase(May-August 1979), to travel before and after fieldphase. This position is expected to be availableJune 1977 through December 1979 with a possibilityof extension. Exempt ranges 58 or 60. Anticipatedhire-in salary: $20,00-28,000/year. Travel andrelocation expenses will be provided. This posi-tion may be filled by an in-house applicant after26 April 1977 or by an outside applicant after12 May 1977.

SUPPORT SCIENTIST II: For the Nimbus 6 and NimbusG Infrared Limb Scanning special projects in theUpper Atmosphere Project. The job will be to pro-vide scientific support in the development of theLimb Infrared Monitor of the Stratosphere (LIMS)experiment for the Nimbus G research satellite andto aid in the interpretation of results from theNimbus 6 Limb Radiance Inversion Radiometer (LRIR).

Duties will include interpreting instrument para-meters in terms of their effect upon derived atmos-pheric variables, interpreting instrument calibra-tion data, development of programs to calculateatmospheric transmittances and outgoing limb radi-ances and the development of and test of algorithmsto invert radiometric limb data. Minimum require-ments include completion of all course requirementsfor M.S. in atmospheric sciences, physics or engi-neering, a working knowledge of remote sensing tech-niques and inversion theory and knowledge of FORTRANprogramming. In addition, 1 year experience ineither modeling infrared radiative transfer or ininterpreting satellite measurements of infraredemission is required; however, comprehensive grad-uate courses in these areas may be substituted forexperience. Some knowledge of infrared instrumen-tation is desirable. This position is expected tolast through September of 1979 and probably throughSeptember of 1980. Exempt range 56. Anticipatedhire-in salary: $14,300-17,900/year. This positionmay be filled after 23 April 1977.

TEMPORARY (Full-time)

METEOROLOGICAL DATA ANALYST: For the GARP AtlanticTropical Experiment (GATE) to assist in helpingmerge diverse meteorological data sets for analysisof various case studies before and during GATE 1977Summer Workshop, and to assist in analysis of theassembled data. The data are primarily from air-craft flown in GATE experiment, upper-air soundings,from tethered balloons, ships and radar. Willsubmit, modify and run some analysis programs onthe NCAR CDC 7600 and organize the output. Thisposition is available immediately or as late as1 June 1977 and will last up to 4 months. Require-ments include: knowledge of computer programmingin FORTRAN, experience in writing computer programswithout close supervision, analysis experience ofmeteorological fields or equivalent experience indealing with observational data, some meteorologycourse-work, math through calculus and analyticgeometry and physics (some thermodynamics). Know-ledge of statistics is desirable. Hire-in salary:$4.13/hour. This position may be filled after26 April 1977.

CASUAL (Will -Call -As-Needed)

CASHIER: For the Cafeteria to be responsible fortaking cash. Must keep working area neat at alltimes and assist in cleaning serving area each day.Will assist in other areas of Cafeteria when needed.Will be almost full-time during summer and workvery few hours during the remainder of the year.Minimum requirement: high school diploma or equi-valent. Six months of previous cashier experienceis preferred. Hire-in salary: $2.81/hour. Thisposition may be filled after 26 April 1977.

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STUDENT ASSISTANT - Casual. STUDENT ASSISTANT: For the Radioactive AerosolsProject to assist in low level radiochemistry labwith lab maintenance, sample preparation, sampleanalysis, calculations and computer input. Workwill include manipulation of cultures of drosophila,yeasts and bacteria. Student will be trained inthese areas and will be given laboratory tasks asskill develops. Requirements include: 1 semesterof college chemistry lab experience involving quan-titative analysis and availability to work part-time during academic year and full-time during vaca-tion periods. Hours to be worked are flexible.Hire-in salary: $3.40/hour. This position may befilled after 10 May 1977.

Page 10: PORTABLE INSTRUMENT DEVELOPED GAS MEASUREMENT

May 2 through May 9, 1977

MONDAY, May 2

* ASP Special Seminar -- Numerical Fluid Mechanicsas a Mathematical Science, Garrett Birkhoff,Harvard University

1:30 p.m.NCAR Mesa Laboratory, Main Seminar Room

TUESDAY, May 3

* AAP Seminar -- Rain Systems of Venezuela andthe General Circulation, Herbert Riehl, GATE

1:30 p.m.NCAR Mesa Laboratory, Main Seminar Room

WEDNESDAY, May 4

* Luncheon Meeting -- Boulder Solar EnergySociety

1:30 p.m.NCAR Mesa Laboratory, Main Seminar Room

* UAP/AQM Seminar -- New Developments in Trace GasMeasurements, Leroy Heidt, UAP

1:30 p.m.Fleischmann BuildingWalter Orr Roberts Seminar Room

THURSDAY, May 5

* HAO Colloquium -- The Interplanetary Neutral Gas,Tom Holzer, HAO

11:00 a.m.HAO Classroom 138

* Cloud Physics Seminar -- Overview of AtmosphericNucleation Studies, Gerhard Langer, NHRE

3:00 p.m.NCAR Mesa Laboratory, Main Seminar Room

* Turbulence Club -- The Origin of Intermittencyin Homogeneous Isotropic Turbulence,Eric Siggia, ASP

3:30 p.m.Fleischmann BuildingWalter Orr Roberts Seminar Room

FRIDAY, May 6

* ASP Special Seminar -- Empirical OrthogonalFunctions and the Seasonal Predictability ofArctic Sea Ice, John Walsh, ASP

1:30 p.m.Fleischmann BuildingWalter Orr Roberts Seminar Room

MONDAY, May 9

Open

Calendar Notes announcements may be mailed toVonda Giesey, ML 141 Wednesday at 12:00 noon isthe deadline for items to be included in the Calendar Notes.


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