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MERRA: MODERN ERA RETROSPECTIVE-ANALYSIS FOR RESEARCH AND APPLICATIONS
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Input Data by Category
1. Conventional Observations
| Data Type |
Time Period |
Source |
| Radiosonde |
1977 - present |
NCEP (Woollen) |
| Dropsonde |
1977 - present |
NCEP (Woollen) |
| Aircraft |
1977 - present |
NCEP (Woollen) |
| Pilot Balloon |
1977 - present |
NCEP (Woollen) |
| Surface Obs |
1977 - present |
NCEP (Woollen) |
| Ship, Buoy |
1977 - present |
NCEP (Woollen) |
| Wind Profiler |
1992/5/14 - present |
UCAR CDAS |
| PAOB |
1978 - present |
NCEP CDAS |
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2.a TOVS Satellite Observations
used in full MERRA analysis and Reduced Observing System Baseline
| Data Type |
Time Period |
Source
timeline of TOVS satellite missions |
| TOVS/tn (TIROS N) |
1978/10/30 - 1980/06/01 |
NCAR/NESDIS |
| TOVS/na (NOAA 6) |
1979/07/02 - 1983/04/17 |
NCAR |
| TOVS/nc (NOAA 7) |
1981/07/11 - 1986/06/01 |
NCAR |
| TOVS/ne (NOAA 8) |
1983/04/26 - 1985/01/01 |
NCAR |
| TOVS/nf (NOAA 9) |
1985/01/01 - 1988/11/01 |
NCAR |
| TOVS/ng (NOAA 10) |
1986/11/25 - 1991/09/17 |
NCAR |
| TOVS/nh (NOAA 11) |
1988/09/02 - 1994/12/31 |
NCAR |
| TOVS/nd (NOAA 12) |
1991/08/18 - 1997/07/14 |
NCAR |
| TOVS/nj (NOAA 14) |
1995/01/19 - present |
NCAR/NESDIS |
| TOVS/nk (NOAA 15) |
1998/07/01 - present |
NCAR/NESDIS |
| TOVS/nl (NOAA 16) |
2001/03/02 - present |
NCAR/NESDIS |
| TOVS/nm (NOAA 17) |
2003/03/01 - present |
NESDIS |
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2.b Other Satellite Observations
used in full MERRA analysis only
| Data Type |
Time Period |
Source |
| SSM/I Radiance |
1987 - present |
RSS (Wentz V6) |
| SSM/I rain rate |
1987 - present |
GPROF |
| SSM/I winds |
1987 - present |
RSS (Wentz V6) |
| TRMM rain rate |
1998 - present |
NASA GSFC DAAC |
| AIRS |
Oct. 2002 - present |
NOAA |
| SBUV |
1978 - present |
NASA GSFC code916 |
| Cloud Motion Winds |
1977 - present |
NCEP (Woollen) |
| GOES Sounder |
Apr 1994 - present |
NCEP |
| QuikScat |
July 1999 - present |
JPL |
| ERS-1 and -2 |
1991/8/5 - 1996/5/21,
1996/3/19 - 2001/1/17 |
ESA |
| MODIS Winds |
TERRA July 2002 - present,
AQUA Sept 2003 - present |
NCEP |
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3. Boundary Conditions
| Data Type |
Time Period |
Source |
| Sea/Ice |
1977 - present |
Hadley, Reynolds |
| SST |
1977 - present |
Hadley, Reynolds |
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