3B.4 Implement and preliminary experiment of FY-3 and NPP microwave satellite data assimilation in WRFDA

Dong, Peiming, Chinese Academy of Meteorological Sciences

FY-3 is Chinese secondary generation of meteorological polar orbiting satellite. The first satellite FY-3A and second satellite FY-3B were launched successfully on 26 May 2008 and 5 November 2010, respectively. NPP is the preparatory satellite for the next generation of operational meteorological polar satellite of the USA, which was launched on 28 October 2011. The sensors onboard on FY-3 enable China to get the independent remote sensing of global atmospheric, oceanic and surface environment, whereas NPP carries several new advanced sensors. The use of FY-3 and NPP satellite observsion plays a crucial role in geosciences.

This presentation reports on the impliment and preliminary experiment with FY-3 and NPP microwave satellite data in WRFDA, both in terms of the analysis of satellite observation characteristics, and in terms of initial assimilation trials in regional numerical forecast. Comparisons between the results of FY-3 MWTS/MWHS and NPP ATMS against that of NOAA AMSUA/MHS are also made to draw a complete outline of the use of these three main passive microwave sensors presently.

The structure of the report is as follows. First a brief background introduction is provided, followed by the description of the implement of FY-3A/B MWTS, MWHS and NPP ATMS data assimilation in WRFDA in section 2. Section 3 presents the analysis and assimilation of FY-3A/B MWTS/MWHS and NPP ATMS, whereas section 4 discusses the extension and investigation of microwave particle scattering module RTTOV-SCATT in WRFDA. Finally, the conclusion and discussion are summarized in the last section.