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 System of the Institute of Atmospheric Physics (IAP)

Nteworks in IAP Research Branches Management Branches Interne t Supper Computers Servers Centeral Switch

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 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 :

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: CategoryDomainFormatcontent 1)precipitation China, globalStation, gridChina(336,160,760);Japan;NCEP;GPCP 2)temperature ChinaStationChina(336,160,760 stations) 3)ice,snow data Tibetan Plateau, Antarctic and Arctic area,global Station,gridTibetan Plateau snow;sea-ice covering Antarctic and arctic area;NCAR reanalysis daily sea-ice data 4)ocean data GlobalGrid,stationNCAR 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 GlobalGridNCEP/NCAR Reanalysis products ( , daily and monthly,17 pressure levels,2.5x2.5 degree); NCEP/DOE Reanalysis II products( ,daily, pressure levels, 2.5x2.5 degree);ECMWF 40-YR reanalysis (ERA-40)( ; 2.5x2.5 degree) 6)radiation data GlobalGridNCAR OLR data; NCAR total cloud cover data;TOGA International Satellite Cloud Climatology Project data 7)atmospheric chemistry and ecological data China, globalStation,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 data receiving and processing module data administration module data access module download and receive data in real-time real-time data historical data LAS/ DODS/GDS Data Administration system users DATABANK file Administration system

Data access 1. DATABANK system : Via WEB--metadata

Data access 2. DATABANK system: programming-getting data – Directly Access

Data access 3. 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 management page 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 set 2.Select variable 3. Customize output 3.Get picture

The data access and analysis by using the client tools based on OPeNDAP

A 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 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 works - 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: Resolution: less than 1/4 o Model: HYCOM Assimilated data: XBT, ARGO, Altimetry, SST Assimilation method: Ensemble Kalman Filter Region: Research works - Producing a 15-year ocean reanalysis

Works has been done - 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 ( ).

Internationalization 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 ！