Guangqing Zhou, Jiang Zhu, and colleagues
Institute of Atmospheric Physics (IAP), Chinese Academy of Sciences
Beijing China
Data management and Ocean data assimilation system at IAP
Duty:Management and Maintenance: • Networks of IAP• Computer Systems• Scientific Data• Library • Software technical support
Information Science Center
- The Research Support Systemof the Institute of Atmospheric Physics (IAP)
Nteworks in IAP
Research Branches
ManagementBranches
Internet
SupperComputersServers
CenteralSwitch
Computing Resources
• IBM-P690 Four Servers with total 128 CPUs, 192GB Memory, 2003
• Legend 1800 cluster Cluster with 256 CPUs, 256GB Memory, 2003
• SGI Origin 2000 20 CPUs, 1997
• SGI Origin 3400 Two Servers with 16 CPUs per machine
• SGI Origin 300 Computation Servers
• Disk Arrays More than 30 TB
With these high performance computers, we develop climate system models, make the numerical simulations, and the weather and climate predictions, etc.
IBM P690s
Legend Cluster
Duties: • to assemble, Manage and Maintain Atmospheric and related sciences data• to develop an IT based virtual environment of atmospheric and environmental sciences.
Scientific Data System
Two main functions: • to offer numerical and pictorial data of weather, climate and environment for the researches in IAP and others;• to help common users to know the present situation and future tendency of weather and climate, and therefore extends meteorological knowledge to the public.
ULR : http://data.iap.ac.cn
The Atmospheric Science Database
1. real-time data system
2. climatic data system
Real-time Data System
1. Download NCEP/NCAR global analysis products(1.0x1.0
degree grids every six hours daily) in real-time from NCAR
ftp site
2. Receive surface observation reports and upper-air
observation reports covering global meteorological stations,
calculating upper-air physical variable products, typhoon
track and objective forecast products ,city forecast products
for 24 hours,numerical forecast products),radar image,etc.
via satellite meteorological data receiving system from
CMA
Climatic Data System
1. Total capacity: 1500GB
2. On-line: 1000GB
3. Category:
Category Domain Format content
1)precipitation China , global Station, grid China(336,160,760);Japan;NCEP;GPCP
2)temperature China Station China(336,160,760 stations)
3)ice,snow data Tibetan Plateau, Antarctic and Arctic area,global
Station,grid Tibetan Plateau snow;sea-ice covering Antarctic and arctic area;NCAR reanalysis daily sea-ice data
4)ocean data Global Grid,station NCAR sst(1x1,2x2,5x5degree);TOGA observation data;COADS data;Pseudo Wind Stress data over the Tropical Pacific (or Atlantic or Indian) Ocean
5) Reanalysis Data Global Grid NCEP/NCAR Reanalysis products (1948-2003, daily and monthly,17 pressure levels,2.5x2.5 degree); NCEP/DOE Reanalysis II products(1979-2002,daily, pressure levels, 2.5x2.5 degree);ECMWF 40-YR reanalysis (ERA-40)(1957-2002; 2.5x2.5 degree)
6)radiation data Global Grid NCAR OLR data; NCAR total cloud cover data;TOGA International Satellite Cloud Climatology Project data
7)atmospheric chemistry and ecological data
China, global Station,grid WMO - WDCGG observation data for greenhouse gases
; NASA ozone and aerosol data; GISS global 1-degree vegetation, land-use and albedo data; runoff,soil status
The Atmospheric Science Database
datareceiving
andprocessing
module
dataadministration
module
dataaccessmodule
downloadand
receivedata
in real-time
real-time
data
historicaldata
LAS/DODS/GDS
DataAdministration
system
usersusers
DATABANKfile
Administrationsystem
Data access1. DATABANK system : Via WEB--metadata
Data access
2. DATABANK system: programming-getting data – Directly Access
Data access3. DATABANK system: Via WEB--getting data and plots
Data access_ via FTP
A new data service platform is developing now:
• GDS/DODS based on OPeNDAP
• less functions, right functions
• do not change users habit
• search engine
Data access _ via GDS/DODS
GDS - data managementpage
List all data files
Select data file and list the general info
Fill the dimention info. and get the data
LAS - 2 dimensional visualization via web
可定制内容丰富:时间范围空间区域数据类型图形格式填色方案……..
Get pict. after 4 steps 1.Select data set2.Select variable
3.Customize output3.Get picture
The data access and analysis by using the client tools based on OPeNDAP
A part of AIPO projectA part of AIPO project
Ocean data assimilation supporting
Chinese climate research
Ocean-Atmosphere Interaction over the Joining Area of Asia and Indian-Pacific Ocean (AIPO) and Its Impact on the Short-Term Climate Variation in China
Aims of TRIPODAims of TRIPOD
Improving the existing 3DVAR ocean data assimilation system OVALS
Producing a 15-year ocean reanalysis product for Indian Ocean-Southern China Sea-West Pacific
Research worksResearch works- Improving the existing 3DVAR system- Improving the existing 3DVAR system
Replace the explicit error covariance by the anisotropic recursive filter
Add new SST data to existing observation data base (XBT, ARGO and Altimetry)
Link it to IAP global ocean model (LICOM) to build a modeling/assimilation system
Period: 1993-2007 Resolution: less than 1/4o
Model: HYCOM Assimilated data: XBT, ARGO, Altimetry, SST Assimilation method: Ensemble Kalman Filter Region:
Research worksResearch works- Producing a 15-year ocean reanalysis- Producing a 15-year ocean reanalysis
Works has been doneWorks has been done- Ensemble Kalman Filter in Pacific- Ensemble Kalman Filter in Pacific
SST correlation between selected points and their vicinity
RMS errors (unit: and psu)℃a) surface temperature, b) surface salinity,
c) temperature in the layer ( ), d) salinity in the layer ( ), e) temperature in the layer ( ), f) salinity in the layer ( ).
24.00 24.00
27.02 27.02
InternationalizationInternationalization• Expects more observations from the new Indian Ocean Observation System;
• Actively involve with GODAE (Jiang Zhu is a Internation GODAE Steering Team member);
• TRIPOD will be an Chinese contribution to GODAE to demonstrate its utility in Asian Monsoon climate research.
Thank you !