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Satellite Data Exchange: Benefits and Importance to Numerical Weather Prediction and Climate Change Study Xiaolei Zou ( 邹晓蕾 ) Department of Earth, Ocean.

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Presentation on theme: "Satellite Data Exchange: Benefits and Importance to Numerical Weather Prediction and Climate Change Study Xiaolei Zou ( 邹晓蕾 ) Department of Earth, Ocean."— Presentation transcript:

1 Satellite Data Exchange: Benefits and Importance to Numerical Weather Prediction and Climate Change Study Xiaolei Zou ( 邹晓蕾 ) Department of Earth, Ocean and Atmospheric Sciences, Florida State University, USA The Fifth China - U.S. Roundtable on Scientific Data Cooperation Beijing, China, October, 2011

2 2 Outline Satellite Data Applications in NWP Chinese Feng-Yun Three (FY-3) Series Current status Recent progress Satellite Data Exchange A brief introduction Science highlights

3 Improve NWP Generate Reanalysis Satellite Data Assimilation 3

4 Data Assimilation for Reanalysis Cycling ( years ) Observations in 6h assimilation window …… Observations in 6h assimilation window Observations in 6h assimilation window Observations in 6h assimilation window Observations in 6h assimilation window Observations in 6h assimilation window 4 Model Forecast Analysis Background Data Assimilation AnalysisBackground Observations

5 Cycling Model Forecast …… Medium Range :5 - 9 day Short-Range : 1-36 hours Data Assimilation in NWP 5 Observations in 6h assimilation window Observations in 6h assimilation window Observations in 6h assimilation window

6 Initial Guess Observations Observation Operator Background Field Background Error Covariance Observation Error Covariance Model Error Covariance Model SpaceObservation Space Analysis (Solution) Data Assimilation 6

7 7 FY-3 New Era of Meteorological Satellite in China

8 Polar-Orbiting Geostationary First Generation Chinese Meteorological Satellites FY-1A: 09/07/1988 FY-1B: 09/03/1990 FY-1C: 05/10/1999 FY-1D: 05/15/2002 Second Generation FY-2A: 06/10/1997 FY-2B: 06/25/2000 FY-2C: 10/18/2004 FY-2D: 12/08/2006 First Generation Second Generation FY-3A: 05/27/2008 FY-3B: 11/05/ more:

9 11 Sensors Onboard FY-3 (1) 可见光和红外扫描辐射计 (2) 中分辨率光谱成像仪 (3) 红外分光计 (4) 微波温度计 (5) 微波湿度计 (6) 微波成像仪 (7) 紫外臭氧垂直探测仪 (8) 紫外臭氧重量探测仪 (9) 地球辐射监测仪 (10) 太阳辐射监测仪 (11) 空间环境监测仪

10 11 Sensors Onboard FY-3 (1)Visible and InfRared Radiometer (VIRR) (2)MEdium ReSolution Imager (MERSI) (3)InfRared Atmospheric Sounder (IRAS) (4)MicroWave Temperature Sounder (MWTS) (5)MicroWave Humidity Sounder (MWHS) (6)MicroWave Radiation Imager (MWRI) (7)Solar Backscatter Ultraviolet Sounder (SBUS) (8)Total Ozone Mapping Unit (TOU) (9)Earth Radiation Measurer (ERM) (10) Solar Irradiation Monitor (SIM) (11) Space Environment Monitor (SEM)

11 11 Sensors Onboard FY-3 VIRR MERSI IRAS SBUS MWHS MWRI MWTS SEM SIM ERM TOU

12 12 InstrumentChannelWavelength FOVs Resolution at Nadir Purpose VIRR – 12.5μm km Cloud, aerosol, TPW, vegetation, surface characteristics, surface T,ice, snow etc. MERSI – 12.5 μm2048/ km/250m Ocean color, aerosol, TPW, cloud, vegetation, surface characteristics, surface T,ice, snow etc. MWRI – 150 GHz km Rainrate, LWC, TPW, soil moisture, sea ice, SST, ice, snow, etc. IRAS – 15.5 μm5617km T, q, total O 3 MWTS450 – 57 GHz km T MWHS5150 – 183 GHz9815km q, surface characteristics TOU6308 – 361 nm3150km Total O 3 SBUS12250 – 340 nm240200km O 3 profile SIM1 0.2 ~ 50μm Solar irradiance ERM4 0.2 ~ 3.8μm 0.2 ~ 50μm 1502°×2° Earth's total radiation, Earth radiance Instrument Parameters

13 13 FY-3 Strategic Plan ( ) Global All weather 3 Dimension Quantitative Multi-channels 2006FY-2D 2007FY-3A (TEST) 2010FY-2F 2008FY-2E 2009FY-3B (TEST) 2011FY-3AM1 2012FY-3PM1 2012FY-2G 2013FY-4A (TEST) 2013FY-3RM (TEST) 2015FY-4EAST1 2014FY-3AM2 2017FY-3AM3 2015FY-3PM2 2016FY-4WEST1 2017FY-4MS (TEST) 2018FY-3PM3 2016FY-3RM1 2019FY-3RM FY-4EAST FY-4WEST FY-4MS 2008FY-3A From Zhang Peng 2008FY-3A 2010FY-3B 2011FY-3AM1 2012FY-3PM1 2013FY-3RM 2014FY-3AM2 2015FY-3PM2 2017FY-3AM3 2016FY-3RM1 2018FY-3PM3 2019FY-3RM2 2013FY-4A 2015FY-4EAST1 2016FY-4WEST1 2017FY-4MS 2019FY-4EAST2 2020FY-4WEST2 2020FY-4MS

14 USA, European and Chinese Polar-Orbiting Satellites morning afternoon

15 15 Launch Date: October 28, 2011 NASA TV (one of cable Channels) or NASA's NPP mission website at: Friday morning's liftoff from Vandenberg Air Force Base, Calif. NPP Launch News NPP --- The NPOESS Preparatory Project NPOESS --- The National Polar-orbiting Operational Environmental Satellite System For a lot of exciting information, please go to:

16 Troposphere Qin, Z., X. Zou, and F. Weng, 2011: Comparison between linear and nonlinear trends in NOAA-15 AMSU- A brightness temperatures during Clim. Dynamics., (revised). 秦正坤 16 Stratosphere T b (K) Time (year) Decadal Climate Trend

17 17 Scene-Temperature Dependence of Bias of FY-3A Microwave Temperature Sounder Caused by Frequency Shift After Launch NASA TV (one of cable Channels). Or go to NASA's NPP mission website at:

18 Channel number Frequency NEΔT (K) MWTSAMSU-A MWTS & AMSU-A Designed MWTS Shifts MWTSAMSU-A none ±0.115 GHz60 MHz GHz80 MHz GHz83 MHz Designed and Shifted Channel Frequencies 18

19 T b (K)  (K) O-B BiasB SF -B DF Jan. Apr. May. Jun. Feb. Mar. channel

20 T b (K)  (K) designed shifted MetOp Jan. Apr. May. Jun. Feb. Mar. channel 4 20

21 Jan. Apr. May. Jun. Feb. Mar. T b (K) O-B Bias channel 3 21 T b (K) B SF -B DF

22 Jan. Apr. May. Jun. Feb. Mar. T b (K) designedshifted NOAA-18  (K) channel 3 22

23 23 12-hour Orbitals (Nadir Position) FY-3A NOAA-18

24 ΔT b (K) Observed T b (K) SNO Matchups between MetOp-A AMUS-A Channel 9 and FY-3A MWTS Channel 4 near Arctic and Antarctic 24 Without correction With correction

25 ΔT b (K) Observed T b (K) ΔT b (K) 25 SNO Matchups between NOAA-18 AMUS-A Channel 7 and FY-3A MWTS Channel 3 near Arctic and Antarctic Without correction With correction

26 Current Status of Satellite Data Exchange at CMA

27 Current Status of Satellite Data Exchange at CMA Data Source DomainLatency ( hour ) SatelliteInstrument NESDIS ( GTS ) Global3-9NOAA15/16/17/18AMSU-A/ MHS EUMETSAT ( GTS ) Global3-7NOAA15/16/17AMSU-A/MHS/HIRS EUMETSAT ( GTS ) Global3-7 NOAA19 、 METOP2 AMSU-A/MHS/HIRS EUMETCAST ( 11 HRPT ) NH ( not China ) 1-2NOAA15/16/17/18/19AMSU-A/MHS/HIRS RARS ( GTS, 11 HRPT ) West Pacific, Oceania, India ocean, South Pacific 1.5NOAA15/16/17/18/19AMSU-A/MHS/HIRS NSMC East Asia0.5NOAA16/18AMSU-A/MHS/HIRS

28 EUMETcast Program: ATOVS HRPT Station Distribution ATOVS --- Advanced TIROS Operational Vertical Sounder TIROS – Television Infrared Observation Satellites EUMETSAT --- European Organisation for the Exploitation of Meteorological Satellites EUMETCast --- a EUMETSAT program for dissemination of various satellite data HRPT --- High Resolution Picture Transmission

29 ATOVS Data Latency

30 Real-Time Operational Satellite Data Exchange Between NOAA/NESDIS and CMA/NMSC Was Established for the First Time! An Exciting Achievement! One of the items in the US-China Bilateral Agreement. NESDIS --- The National Environmental Satellite, Data, and Information Service NOAA --- National Oceanic and Atmospheric Administration NMSC --- The National Meteorological Satellite Center CMA --- Chinese Meteorological Admistration

31 FY-3A/B Data Volume 产品名称 Instrument 覆盖范围 Orbit 数据量 Data Volume 生成频次 Frequency 微波温度计 L1 数据产品 Microwave Temperature Sounder (MWTS) 轨道 Orbit 0.5 MBYTE 每 102 分钟一次 1 Orbit/102 Min 微波湿度计 L1 数据产品 Microwave Humidity Sounder (MWHS) 轨道 Orbit 15 MBYTE 每 102 分钟一次 1 Orbit/102 Min 微波成像仪 L1 数据产品 Microwave Radiation Imager (MWRI) 轨道 Orbit 28 MBYTE 每 102 分钟一次 1 Orbit/102 Min 红外分光计 L1 数据产品 Infrared Atmospheric Sounder (IRAS) 轨道 Orbit 13 MBYTE 每 102 分钟一次 1 Orbit/102 Min 臭氧总量探测仪 L1 数据产品 Total Ozone-mapping Unit (TOU) 轨道 Orbit 2 MBYTE 每 102 分钟一次 1 Orbit/102 Min

32 NOAA-18/19 Data Volume 产品名称 Instrument 覆盖范围 Orbit 数据量 Data Volume 生成频次 Frequency Advanced Microwave Sounding Unit (AMSU) 轨道 Orbit 2 MBYTE 每 102 分钟一次 1 Orbit/102 Min Microwave Humidity Sounder (MHS) 轨道 Orbit 8 MBYTE 每 102 分钟一次 1 Orbit/102 Min High Resolution Infrared Radiation Sounder (HIRS) 轨道 Orbit 5 MBYTE 每 102 分钟一次 1 Orbit/102 Min Solar Backscattering Ultraviolet Spectral Radiometer(SBUV) 轨道 Orbit 1 MBYTE 每 102 分钟一次 1 Orbit/102 Min

33 Bandwidth/Storage Requirements 60 MB from FY-3A (or FY-3B) and 20 MB from NOAA- 19 (or NOAA-18) data transfer volume in every 102 minutes 2 hour data latency time for NWP operational data ingest cutoff, 18 minutes latency time for satellite data assimilation process 500 GB to 1 TB RAID-5 configuration data storage server for real time data exchange Data are protected under privacy policy agreement by both sides

34 Security Protection Network Level STAR Firewall only allows FTP access to data exchange server. Operating System Level Host based firewall only allows incoming FTP from public servers, however this can be further reduced to specific servers. (ingress filtering) Host based firewall only allows outgoing connections that are related to the incoming FTP connections. (egress filtering) Host based Anti-Virus and AV aware FTP software. Software Level: Using ProFTP with the following options: (1) Require SSL (encrytion, AES256) for both the authentication and the data streams. (2) Require client-side certificate and username/password login (dual-factor authentication)

35 Current Progress  CMA Connects to CSTnet via 1Gbps access line  CSTnet links with GLORIAD (Global Ring Network for Advanced Applications Development )  Real connection speed is close to T-1 line (1.5 Mb/Sec)

36 Current Progress Software packages for secure data transfer have been installed at NOAA/NESDIS/STAR Secure FTP data exchange tests have been conducted Real time NOAA-19/NOAA-18 data have been post in STAR server Real time FY3-A/FY3-B data have been uploaded to STAR server Average speed is close to T-1 line at 1.5 Mb/second

37 Data Sharing Network Three service devices ① Data bank device ② Core operational device ③ Web device ① Linux standard platform ② Common data bank (MYSQL) ③ Mature software products Open System Fortran90 Web PHP

38 NOAA 卫星资料 GPS RO FY3 卫星资料 CLOUDSAT DMSP卫星资 料 Data Bank Data Types 主动获取 (按 定时访问) 被动获取 (外部数据 源自动发布 ) 访问规 则表 数据库 MYSQL SSMI 反演系统 MIRS 反演系统 GPS RO 反演系统 绘图系统 文件管理系统 其它 Web service Web 服务 Web display 后台 监听 服务 Structure MetOp 卫星资料 运行环境: Linux 常规资料 温室气体资料

39 Home Page

40 Front-Page Display

41 完善的后台控制平台

42 基于角色的权限管理

43 43 Future Work FY-3 Data Processing and Applications Link FY-3 data to NOAA and MetOp data for establishing climate data record (CDR) Assimilation of FY-3 data in GFS WRF and Chinese GRAPES data analysis systems Real-Time Satellite Data Exchange Among Different Nations

44 全球气候变化数据的评估、同化、融合与应用 全球变化研究国家重大科学研究计划 : ( 项目编号 : 2010CB ) Acknowledgement This work is supported by Chinese Ministry of Science and Technology project 2010CB entitled “Assessment, Assimilation, Establishment and Applications of Global Climate Change Data Records.”


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