Primary reference Kanamitsu et al. (2002) Uppala et al. (2005) Input Data Satellite data: NESDIS TOVS Direct assimilation of VTPR, temperature retrievals, TOVS (HIRS, MSU, SSU) track winds. (No and AMSU-A Level-1c moisture data used) radiances, Atmospheric Motion Vectors, scatterometer winds, SSM/I radiances as 1D-Var retrievals of TCWV and surface wind speed TOMS and SBUV data in ozone analysis, Altimeter wave height data (see Hernandez et al., 2004) air data Radiosondes, dropsondes, Radiosondes, dropsondes, pibals, aircraft data, wind pibals, aircraft data, wind profilers profilers Surface data (snow Stations, ships, buoys, Stations, ships, buoys, cover) PAOBs, (NSIDC-based, PAOBs. (SYNOP snow USAF snow cover after depth, most after 1976) fall 1998, depth is dynamic) SST and Sea Ice AMIP-II (should be same Reynolds et al. (2002), as ERA-40 except for Rayner et al. (2003) and time interpolation, NCEP products Kanamitsu, pers. comm., 2007), Reynolds SST 1999 Period 1979- present September 1957-August 2002 (45 years) Table 2.4 Some aspects of the NDRa2 and ERA-40 assimilation systems. Acronyms and abbreviations are defined in the appendix. From Grotjahn (2008) Dataset ERA-40 Primary reference Kanamitsu et al. (2002) Uppala et al. (2005) Period 1979- present September 1957-August 2002 (45 years) Assimilation model Model based on: MRF (ca 1995, with ECMWF forecast model modifications) full radiation CY23r4 (operational in calculation hourly June 2001) Assimilation scheme 3DVAR (Parrish and 3DVAR-FGAT, OI for Derber, 1992) surface parameters and ocean wave height
Primary reference Kanamitsu et al. (2002) Uppala et al. (2005) Input Data Satellite data: NESDIS TOVS temperature retrievals, track winds. (No moisture data used) Direct assimilation of VTPR, TOVS (HIRS, MSU, SSU) and AMSU-A Level-1c radiances, Atmospheric Motion Vectors, scatterometer winds, SSM/I radiances as 1D-Var retrievals of TCWV and surface wind speed TOMS and SBUV data in ozone analysis, Altimeter wave height data (see Hernandez et al., 2004) air data Radiosondes, dropsondes, pibals, aircraft data, wind profilers Radiosondes, dropsondes, pibals, aircraft data, wind profilers Surface data (snow cover) Stations, ships, buoys, PAOBs, (NSIDC-based, USAF snow cover after fall 1998, depth is dynamic) Stations, ships, buoys, PAOBs. (SYNOP snow depth, most after 1976) SST and Sea Ice AMIP-II (should be same as ERA-40 except for time interpolation, Kanamitsu, pers. comm., 2007), Reynolds SST 1999 Reynolds et al. (2002), Rayner et al. (2003) and NCEP products Period 1979- present September 1957-August 2002 (45 years) Table 2.4 Some aspects of the NDRa2 and ERA-40 assimilation systems. Acronyms and abbreviations are defined in the appendix. From Grotjahn (2008) Dataset ERA-40 Primary reference Kanamitsu et al. (2002) Uppala et al. (2005) Period 1979- present September 1957-August 2002 (45 years) Assimilation model Model based on: MRF (ca 1995, with modifications) full radiation calculation hourly ECMWF forecast model CY23r4 (operational in June 2001) Assimilation scheme 3DVAR (Parrish and Derber, 1992) 3DVAR-FGAT, OI for surface parameters and ocean wave height
Chapter_2_v4-BW-macro.docx