Bad/Suspicious ECMWF Data

Some data from the ECMWF-TOGA dataset have been flagged as being poor/suspicious.

REGIONS:

  • SH: 90 deg S - 20 deg S
  • TR: 20 deg S - 20 deg N
  • NH: 20 deg N - 90 deg N
  • GL: Global

FLAGS:

  • M: analyses are missing
  • 0: analyses are suspect
  • 1: analyses have some clear problems and should be rejected
  • 2: totally meaningless analyses
  • 3: very bad analyses, this flag occurs only in the WC2 archive and indicates that in the HISTORY TAPES, the data have been replaced with data from the WCRP I archive, the 4x daily T106 Spherical Harmonics data.

DATASETS:

  • WC1: WCRP archive at T106 Spherical Harmonics, 4x daily
  • WC2: WCRP archive on 2.5 degree grid, 2x daily
Date Dataset Field Level Region Flag
1/1/85 00Z - 12/31/85 18Z WC1,WC2 All 100-10 mb GL 1
4/23/85 06Z - 4/23/85 12Z WC1,WC2 All All GL M
4/24/85 06Z - 4/24/85 12Z WC1,WC2 All All GL M
4/29/85 18Z - 4/30/85 18Z WC1 All All GL M
4/30/85 00Z WC2 All All GL M
5/1/85 00Z - 5/31/85 12Z WC2 U,V All GL 3
6/1/85 00Z - 6/30/85 12Z WC2 U,V All GL 3
6/13/85 18Z WC1,WC2 All All GL M
6/14/85 00Z - 6/14/85 12Z WC2 All All GL 3
1/1/86 00Z - 5/12/86 18Z WC1,WC2 All 100-10 mb SH 1
3/16/86 12Z WC1,WC2 All 500-200 mb SH 1
5/4/86 12Z WC1,WC2 All 500-200 mb SH

1

6/12/86 00Z - 6/19/86 12Z WC1,WC2 U,V,T 10 mb SH,TR 1
4/01/87 18Z WC1 All All GL M
7/20/88 00Z - 8/1/88 12Z WC1,WC2 U,V,T 70-10 mb SH 1
7/20/88 00Z - 8/1/88 12Z WC1,WC2 OMEGA 150-10 mb SH 1
7/20/88 00Z - 8/1/88 12Z WC1,WC2 ZA 10 mb SH 1

(See also NCAR Tech Note 300, "ECMWF Global Analyses 1979-1986", by
Trenberth and Olson, especially Appendix II)

Additionally, in DS111.2 (WCRPII), the winds at the North and South Poles were NOT calculated correctly and should be ignored prior to June, 1991. This ONLY affects the winds at the poles. In June, 1991 this problem was corrected.