CONvective TRansport of2Active2Species2in2the2TropicsGuam,2Jan−Feb 2014
CONvective TRansport of2Active2Species2in2the2TropicsGuam,2Jan−Feb 2014
Weather & Climate Science
Ms. Alison RockwellNCAR/Earth Observing Laboratory Education & Outreach Coordinator
Dr. Ross Salawitch University of Maryland CONTRAST Scientist
Dr. Maria NavarroUniversity of Miami CONTRAST Scientist
Flying Laboratory
NSF/NCAR HIAPER Research Aircraft
Flying Laboratory
NSF/NCAR HIAPER Research Aircraft
FA
AM
BA
e-146
MBL -
6 k
m
Intense solar radiation and warm sea surface temperature in the ;YVWPJHS�>LZ[LYU�7HJPÄJ�WYVK\JL�KLLW�JVU]LJ[P]L�JSV\KZ��
Mid-altitude outflow
Low-altitude inflow & outflow
Designed by Alison Rockwell NCAR/EOL
Troposphere
Lower Stratosphere
Net zero radiative heatingAir
descending
Rising warm air lofts chemical compounds
released by marine organisms
NA
SA
Glo
bal H
aw
k
14 -
19 k
m
Warm tropical ocean waters enhance production of ZOVY[�SP]LK�VYNHUPJ�IYVTPUL�HUK�PVKPUL�JVTWV\UKZ�I`�THYPUL�
VYNHUPZTZ��;OLZL�OHSVJHYIVUZ��OHSVNLU�JVU[HPUPUN�VYNHUPJ�JVTWV\UKZ��HYL�[OLU�YLSLHZLK�PU[V�[OL�H[TVZWOLYL�
)Y6�HUK�*S6�YLHJ[��SLHKPUN�[V�Z[YH[VZWOLYPJ� VaVUL��63) depletion
CONTRAST*65]LJ[P]L�;9HUZWVY[�VM�(J[P]L�:WLJPLZ� PU�[OL�;YVWPJZ
.\HT�!!����1HU\HY`������-LIY\HY`�����
TropopauseAir
ascendingN
SF/N
CA
R H
IAPER
5 -
15 k
m Br I IO
Long-lived bromocarbons
BrO
3VUN�SP]LK�JOSVYVÅ\VYVJHYIVUZ���Z\USPNO[���O`KYV_`S��6/���������JOSVYPUL�TVUV_PKL��*S6�
3VUN�SP]LK�IYVTVJHYIVUZ���Z\USPNO[���O`KYV_`S��6/� ��IYVTPUL�TVUV_PKL��)Y6�
:OVY[�SP]LK�IYVTVJHYIVUZ���Z\USPNO[���O`YKV_`S��6/�� IYVTPUL�TVUV_PKL��)Y6��HUK�VY�PVKPUL�TVUV_PKL��06�
Short-lived halocarbons decompose, yielding:
)Y6�HUK�06�YLHJ[�YLTV]PUN�[YVWVZWOLYPJ�VaVUL��63)
High-altitude slow ascent from
outflow
(PY�^P[OPU�JVU]LJ[P]L�JSV\KZ�OHZ�L_[YLTLS`�SV^�VaVUL�� H�\UPX\L�JOLTPJHS�LU]PYVUTLU[�[OH[�^PSS�IL�
Z[\KPLK�PU�KL[HPS�MVY�[OL�MPYZ[�[PTL�
✭Guam
Image courtesy of WikiCommons & the World Ocean Atlas
Why Guam?
Why Guam?
Photo by Adam Sobel
The People of CONTRAST
The People of CONTRAST
The People of CONTRAST
The People of CONTRAST
The People of CONTRAST
The People of CONTRAST
Maria Norrova Instrument: Whole Air Sampler
Venezuela
Why are we studying this?
Impacts of human activity on atmospheric composition
ITCZ: Inter-tropical Convergence Zone rainy region of the tropics
SouthernHemisphere
Northern Hemisphere
Guahan
15º N
10º N
5º N
Guam
Red & Yellow: Aircraft flight track Note aircraft did return to GuamEQ
ITCZ
Aircraft track flown Sat, 8 Feb (yellow) on top of satellite cloud map
Northern Hemisphere
Carbon Monoxide
Hei
ght (
m)
Ozone
Ozone (O3): Compromises air quality & causes global warming Carbon monoxide (CO): Produced by combustion of fossil fuel & biomass burning
Southern HemisphereH
eigh
t (m
)
Ozone (O3) Carbon Monoxide
Ozone (O3): Compromises air quality & causes global warming Carbon monoxide (CO): Produced by combustion of fossil fuel & biomass burning
Small Particles
Hei
ght (
m)
Northern Hemisphere
Small particles: Particularly harmful to babies & elderly
outher
Small particles: Particularly harmful to babies & elderly
NH value
Small Particles
Hei
ght (
m)
Southern Hemisphere
www.facebook.com/ncareol
www.eol.ucar.edu/contrast/eo
www.YouTube.com/ncareol
Learn More
?Any Questions?