FN Archimer Export Format
PT J
TI GF-3 SAR Ocean Wind Retrieval: The First View and Preliminary Assessment
BT 
AF WANG, He
   YANG, Jingsong
   MOUCHE, Alexis
   SHAO, Weizeng
   ZHU, Jianhua
   REN, Lin
   XIE, Chunhua
AS 1:1;2:2;3:3;4:4;5:1;6:2;7:5;
FF 1:;2:;3:PDG-ODE-LOPS-SIAM;4:;5:;6:;7:;
C1 State Ocean Adm, Natl Ocean Technol Ctr, Tianjin 300112, Peoples R China.
   State Ocean Adm, Inst Oceanog 1, State Key Lab Satellite Ocean Environm Dynam, Hangzhou 310012, Zhejiang, Peoples R China.
   Inst Francais Rech Exploitat Mer, Lab Oceanog Phys & Spatiale, F-29280 Brest, France.
   Zhejiang Ocean Univ, Marine Acoust & Remote Sensing Lab, Zhoushan 316000, Peoples R China.
   State Ocean Adm, Natl Satellite Ocean Applicat Serv, Beijing 100081, Peoples R China.
C2 STATE OCEAN ADM, CHINA
   STATE OCEAN ADM, CHINA
   IFREMER, FRANCE
   UNIV ZHEJIANG OCEAN, CHINA
   STATE OCEAN ADM, CHINA
SI BREST
SE PDG-ODE-LOPS-SIAM
UM LOPS
IN WOS Ifremer jusqu'en 2018
   DOAJ
   copubli-int-hors-europe
   copubli-sud
IF 3.406
TC 38
UR https://archimer.ifremer.fr/doc/00396/50731/51435.pdf
LA English
DT Article
DE ;GF-3;synthetic aperture radar (SAR);ocean surface wind;validation
AB Gaofen-3 (GF-3) is the first Chinese civil C-band synthetic aperture radar (SAR) launched on 10 August 2016 by the China Academy of Space Technology (CAST), which operates in 12 imaging modes with a fine spatial resolution up to 1 m. As one of the primary users, the State Oceanic Administration (SOA) operationally processes GF-3 SAR Level-1 products into ocean surface wind vector and plans to officially release the near real-time SAR wind products in the near future. In this paper, the methodology of wind retrieval at C-band SAR is introduced and the first results of GF-3 SAR-derived winds are presented. In particular, the case of the coastal katabatic wind off the west coast of the U.S. captured by GF-3 is discussed. The preliminary accuracy assessment of wind speed and direction retrievals from GF-3 SAR is carried out against in situ measurements from National Data Buoy Center (NDBC) buoy measurements of National Oceanic and Atmospheric Administration (NOAA). Only the buoys located inside the GF-3 SAR wind cell (1 km) were considered as co-located in space, while the time interval between observations of SAR and buoy was limited to less the 30 min. These criteria yielded 56 co-locations during the period from January to April 2017, showing the Root Mean Square Error (RMSE) of 2.46 m/s and 22.22 degrees for wind speed and direction, respectively. Different performances due to geophysical model function (GMF) and Polarization Ratio (PR) are discussed. The preliminary results indicate that GF-3 wind retrievals are encouraging for operational implementation. 
PY 2017
PD JUN
SO Remote Sensing
SN 2072-4292
PU Mdpi Ag
VL 9
IS 7
UT 000406676800057
DI 10.3390/rs9070694
ID 50731
ER

EF