The Status Report of FY-2F

Transcription

1 Seventh Session of the Expert Team on Satellite Utilization and Products The Status Report of FY-2F Presented by Xiang Fang National Satellite Meteorological Center (NSMC) China Meteorological Administration (CMA)

2 Outline 1. Overview 2. Main Improvement Features of VISSR 3. Products 4. Application 5. Data Service

3 FY-2F: The first one in the third group of FY-2 The FY-2F is the first one in the third group of FY-2. These satellites in the group are gradually evolving towards the next generation geostationary meteorological satellites FY-4 series. No. Pos. Status Launch FY-2A 105E Exp. (dead) Jun.10, 1997 FY-2B 105E Exp. (dead) Jun.20, 2000 FY-2C 122.5E Op. (retired) Oct.18, 2004 FY-2D 86.5E Op. (working) Dec.8, 2006 FY-2E 105E Op. (working) Dec.23,2008 FY-2F 112E Op. (working) Jan.13,2012 Platform: Spin stabilization Payload: 5 chl. VISSR in operation since June, 2012

4 The performance of visible and infrared spin scan radiometer Wave band Bandwidth (μm) Spatial resolution (Km) Sensitivity/SNR Dynamic range VIS 0.55~ (ρ=1%) 0~98% IR1 10.3~11.3μ m 5 0.2~0.4K@300K 180~330K IR2 11.5~12.5μ m 5 0.2~0.4K@300K 180~330K IR3 6.3~7.6μm 5 0.3~0.6@260K 190~300K IR4 3.5~4.0μm 5 0.3~0.6K@300K 220~340K

5 The First image of FY-2F

6 Technical improvements The performance of the Visible and Infrared Spin- Scan Radiometer (VISSR) has been further improved; The Advanced Space Environment Monitor (ASEM) is a payload; A High-speed Data Collection Transponder is installed on board the satellites; The designed life of the satellites is extended to 4 years.

7 Main Improvement Features of VISSR Even more rigid spectral response requirements have been imposed to the 5 observing channels; The bandwidth of the Visible Channel has been narrowed from 0.55~0.9μm to 0.55~0.75μm; Further reducing the effect of stray light from midnight sun straight shinning on the image; Observation area and the frequency are more flexible; A novel on-orbit radiometric calibration approach has been proposed.

8 The performance of Visible Channel has been improved FY-2E FY-2F IGBP global vegetation classification Wu& Lu 2012 改进光谱波段设置 A 1 A 2 A 3 A 4 B 1 B 2 B 3 B 4 The bandwidth of the Visible Channel has been narrowed from 0.55~0.9μm to 0.55~0.75μm

9 Reducing the effect of stray light FY-2E FY-2F

10 New Observation Capability Regional observation 15 Scanning Region Largest region Scanning time 13 min Least region Scanning time 4.5 min China Scanning time 8 min

11 Observation area and the frequency are more flexible. FY-2F can arbitrarily start and end scanning lines in a particular region.

12 The improvement of Calibration A novel on-orbit radiometric calibration approach, which is called calibration of inner blackbody corrected by lunar emission (CIBLE), has been proposed to achieve the higher accuracy of radiometric measurement for VISSR on board FY-2F. CIBLE procedure has been operating and its radiometric measurement accuracy remains about 2-3K@220K compared with MTSAT JAMI since the late 10-day of July Lunar Obs. in TIR band Four IR bands of VISSR Spectral response limits are required + Inner Blackbody = Calibration of Inner Blackbody corrected by Lunar Emission (CIBLE)

13 Calibration slope s intraday variation for FY-2F during satellite eclipse period Maximal Relative Variation: 3%

14 Cloud 云分类产品应用个例 Classification :2012_0418( (CLC) sample 非星蚀期 in April ) 18, 2012 for FY-2F RAW IMAGE O.C. CLC CIBLE CLC

15 AMV High level GSICS High level CIBLE 0.5m/s Middle level GSICS Middle level CIBLE 1.1m/s

16 Products of FY-2F FY-2F products include datasets, images and quantitative products. In quantitative products, Cloud Top Temperature and LST are new products.

17 Quantitative products(17) Cloud classification Precipitation Estimation Atmospheric Motion Vectors(AMV) Cloud water profile Solar irradiance Snow cover Total cloud amount Precipitation index Upper troposphere Outgoing Long wave Radiation(OLR) Cloud top Temperature Sea Surface Temperature (SST) Sand storm detection Precipitable water Humidity Temperature Blackbody Equivalent (TBB) Land Surface Temperature (LST)

18 Land Surface Temperature Cloud top Temperature Temperature Blackbody Equivalent Total cloud amount

19 Sea Surface Temperature Upper troposphere Humidity Outgoing Long wave Radiation Precipitable water

20 Applications of Regional observation During the flood-prone season of 2012, FY-2F intensive regional observations have played an important role in the monitoring and forecasting of typhoons, rainstorms and strong convective weather. FY-2F has launched totally more than 10 intensive regional observations, achieving a significant effectiveness in applications and services.

21 Convective Cloud Identifying and tracking

22 Parameter Calculation

23 Precipitation Estimation

24 Tropical Cyclone Doksuri (201206) With the FY-2F intensive images, the center at low altitude of Doksuri could be tracked, positioning improved, typhoon s location and intensity was obtained 10 minutes earlier.

25 Tropical Cyclone Kai-tak (201213) Clouds generate strongly in south and west of the cloud circulation, marked by strengthening divergent cirrus plumes. Cumulus cloud lines flowing from north of the circulation are favorable for the convergence.

26 Rainfall estimation of TC Kai-tak the main rainfall area of TC Kai-tak is found in both south and west of its circulation.

27 Rainstorm in TianJin Province on 26 July

28 Rainstorm monitoring in Xiangshui County of Jiangsu Province on 10 August low-level cloud system was transported north along the southeast coast, which met cold air coming from north leading to heavy rainfall weather.,

29 Data Services Users may get access to FY-2F data and products in following 3 approaches: Direct Broadcast CMACast Service delivery via Internet

30 CMACast CMACast can also receive FY-2F data and products broadcasted by CMA. The details of the broadcasting are given as follows: Data and product Channel Channel priority Broadcast Timeliness File name File format File length Reference broadcast time(utc) FY2F nominal image of regional observations SATE_FY2F _NOM 1 1 min. Z_SATE_C_BAWX_YYYYMM DDHHMMSS_P_FY2F_F DI_REG_NOM_YYYYM MDD_HHmm.hdf HDF 5.0 8MB/2 minutes once/6 Minutes FY2F stretched image of regional observations SATE_FY2F _SVS 0 10 min. Z_SATE_C_BAWX_YYYYMM DDHHMMSS_P_FY2F_S VS_MLT_NUL_YYYYM MDD_HHmm.hdf Binary System (DAT) 27.3MB/2 minutes once/6 Minutes FY2F Outgoing Longwave Radiation (OLR) products (6 min) SATE_FY2F _L2L3 2 2 min. Z_SATE_C_BAWX_YYYYMM DDHHmmss_P_FY2F_ OLR_MLT_OTG_YYYY MMDD_HHmm.AWX AWX MB/2 minutes once/6 minutes FY2F blackbody temperature (TBB) products (6 min) Z_SATE_C_BAWX_YYYYMM DDHHmmss_P_FY2F_ TBB_IR1_OTG_YYYYM MDD_HHmm.AWX AWX2.1 2MB/2 minutes once/6 Minutes FY2F PRE products (6 min) Z_SATE_C_BAWX_YYYYMM DDHHmmss_P_FY2F_ PRE_001_OTG_YYYYM MDD_HHmm.AWX AWX2.1 1MB/2 minutes once/6 minutes

31 Coverage Location Iraq (West most) New Zealand (South most)

32 Service delivery via Internet The information about FY series satellites, satellite images, operating status, operation schedule can be accessed via the website of the National Satellite Meteorological Center ( and a range of FY-2F satellite data and products can be discovered and downloaded by logging in the website:

33 Thank you for your kindly attention!