NCEP/Climate Prediction Center ATLAS No. 2

Intercomparison of the NCEP/NCAR and the NASA/DAO Reanalyses (1985-1993)

5. Input Observations for the NCEP/NCAR Reanalysis



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5.2 Typical Spatial Coverage

Figure 112. Locations and counts (both wind and mass) of observations used in the NCEP reanalysis for the period July 15, 1986 (0000UTC-1800 UTC). (a) Radiosonde / pibal / dropsonde data, (b) satellite cloud track winds, (c) COADS marine data , (d) surface bogus (PAOBS and SPLASH level dropsondes), (e) commercial aircraft reports, (f) TOVS retrievals of NESDIS and (g) surface land synoptic data.

5.3 Inventory

Figure 113. Number of daily reports of radiosonde / pibal / dropsonde data for 1979-1995. Reports are shown by region for the NH extratropics, SH extratropics, tropics, and poles. Reports are also shown for temperature and wind data separately.

Figure 114. Number of daily reports of satellite cloud track winds for 1979-1995. Reports are shown by region for the NH extratropics, SH extratropics, tropics, and poles. Reports are also shown for low levels and high levels separatley.

Figure 115. Number of daily reports of COADS data for 1979-1995. Reports are shown by region for the NH extratropics, SH extratropics, tropics, and poles. Reports are also shown for temperature and wind data separately.

Figure 116. Number of daily reports of surface bogus (PAOBS and SPLASH level dropsondes) for 1979-1995. Reports are shown by region for the NH extratropics, SH extratropics, tropics, and poles.

Figure 117. Number of daily reports of commercial aircraft data for 1979-1995. Reports are shown by region for the NH extratropics, SH extratropics, tropics, and poles. Reports are also shown for temperature and wind data separately.

Figure 118. Number of daily reports of TOVS retrievals of NESDIS for 1979-1995. Reports are shown by region for the NH extratropics, SH extratropics, tropics, and poles. Reports are also shown over land and over ocean separately.

Figure 119. Number of daily reports of surface land synoptic data for 1979-1995. Reports are shown by region for the NH extratropics, SH extratropics, tropics, and poles. Reports are also shown for temperature and wind data separately.


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