AWDP km. 25 km

Transcription

1 MyOcean2 Wind

2 AWDP km 25 km

3 Tropical variability 1. Dry areas reasonable 2. NWP models lack airsea interaction in rainy areas 3. ASCAT scatterometer does a good job near rain 4. QuikScat, OSCAT and radiometers are affected by rain droplets Portabella et al., TGRS, 2011

4 ASCAT 25 km (selected) winds closer to buoy winds than ECMWF winds in the vicinity of rainy areas (buoy rain data). 4

5 ASCAT-A and ASCAT-B come together Convective downbursts

6 ASCAT-A and ASCAT-B collocation ASCAT-B ASCAT speeds ASCAT-A NWP speed Global Small spread in NWP due to 50 minutes time difference (smooth wind fields) ASCAT direction NWP direction Larger spread in ASCAT due to much smaller resolved scales (e.g., convection)

7 Triple collocation Data from November 2012 to January 2013 Errors on scatterometer scale A and B very similar Scatterometer Buoys ECMWF m/s σ u σ v σ u σ v σ u σ v ASCAT-A 25-km ASCAT-B 25-km ASCAT-A Coastal ASCAT-B Coastal

8 Air-sea interaction ECMWF weak Chelton et al., Science ECMWF model ECMWF model

9 GLOBAL SCATTEROMETER MISSIONS (CEOS VC) Launch Date Marine 08 Core 09Service 10/06 C-band Ku-band B EPS SG Europe 6/99 QuikSCAT USA OceanSat-3 India No NRT global availability Combined C- and Ku-band Operating FY-3E with 2FS China NASA ISS scatterometer Approved Extended Availability?? sw 24feb11

10 Motivation Wind TAC Marine Core Service Generate spatially and temporally consistent highresolution gridded wind fields to satisfy user demand (L3 and L4) Effective use of all available small-scale ocean surface wind information ASCAT, QuikScat, OSCAT, ERS scatterometer wind vectors Passive radiometer speeds Improve ocean circulation, waves, surges, coupling Oceanography, meteorology, climate, e.g., wind energy

11 Organisation Wind Marine Core Service KNMI lead DU at IFREMER L3 PU at KNMI L4 PU at IFREMER

12 Marine Core Service V3 EPST GLO-BLENDED_WIND_L4-OBS_VIEW_FULL_TIME_SERIE GLO-WIND_L3-OBS_METOP-A_ASCAT_25_ASC GLO-WIND_L3-OBS_METOP-A_ASCAT_25_DES GLO-WIND_L3-OBS_METOP-A_ASCAT_12_ASC GLO-WIND_L3-OBS_METOP-A_ASCAT_12_DES GLO-WIND_L3-OBS_METOP-B_ASCAT_25_ASC GLO-WIND_L3-OBS_METOP-B_ASCAT_25_DES GLO-WIND_L3-OBS_METOP-B_ASCAT_12_ASC GLO-WIND_L3-OBS_METOP-B_ASCAT_12_DES GLO-WIND_L3-OBS_Oceansat2_OSCAT_50_ASC GLO-WIND_L3-OBS_Oceansat2_OSCAT_50_DES

13 After V4 Stress Curl Divergence Reprocessing U10N ASCAT (CMOD6, QC,.. ), QuikScat (NSCAT3, NWP Ocean Calibration) Documentation, verification

14 Plans Wind Constellation products L3 and L4 (CFOSAT, HY2A, Rapidscat, CYGNSS, S1, MSCAT) Collocation with ERA for obtaining sampling error (QC issues) Directly gridded products using L2 processors with L1b inputs to avoid interpolation errors

15 OSI-Wind TAC Satellite Data Requirements for Agency Description Platform Agency Description Platform ERS-1 level 2 EUMETSAT OSI SAF products ERS-2 level 2 EUMETSAT OSI SAF products HY2A level2 EUMETSAT OSI SAF products WindSat level2 NRL, USA products ERS-1 ERS-2 HY2A WINDSAT CFOSAT L2 product (Chinese-French Oceanic SATellite), EUMETSAT/CNES/C , CNES / NSA CNSA CFOSAT EUMETSAT Sentinel1 L2 product SENTINEL-1 EUMETSAT Quiksat L2 product QUIKSCAT NASA, Rapidscat, HY2A not NRT yet ISS EUMETSAT OSI SAF EUMETSAT OSI SAF EUMETSAT OSI SAF EUMETSAT OSI SAF EUMETSAT OSI SAF OSI-105 Winds by OSISAF OSCAT on OCEANSAT2 50km OSI-102b Winds by OSISAF ASCAT25 on METOPB 25km OSI-104b Winds by OSISAF ASCAT Coastal Winds on METOPB 12.5km OSI-102 Winds by OSISAF ASCAT25 on METOPA 25km OSI-104 Winds by OSISAF ASCAT Coastal Winds on METOPA 12.5km NASA PODAAC PODAAC NOAA NRT WINDSAT winds 25km PODAAC NOAA NRT NASA PODAAC OSCAT Winds 25km PODAAC NOAA NRT NASA PODAAC OSCAT Winds 12.5km OCEANSAT-2 METOP-B METOP-B METOP-A METOP-A WINDSAT OCEANSAT-2 OCEANSAT-2

16 Global constellation users All EUMETSAT SAF wind product service messages are popular world wide (service messages also through EUMETCAST and JPL PODAAC) Both data products and wind processing software are popular Multiple access links will provide increased visibility and use; additional providers would provide use statistics A direct link from PU to users is essential for prioritizing R&D NWP SAF software users Africa China Europa India Other Asia Russia South America USA OSI SAF Message List South America Oceania Europe Other Canada China Hong Kong India Japan Korea Russia Taiwan USA