What is the reason to rerun the 1997MAR-DEC reanalysis?
[3/23/98] According to NCEP, the reason follows: In response to a question by Dr. Rupa Kumar (visiting scientist at ENM/URF/UMT Meteo France) concerning the large 1997 Indian monsoon rainfall, Bob Kistler found a problem with our handling of the Indian station data since March 1997. These analyses are not “wrong” but use more Indian station data than intended. Preliminary plans are to redo the analyses starting from March 1997 with an expected completion date in February 1998. The updated results of 1997 data (including 1997MAR-DEC rerun) are released on March 23, 1998. CDAS/Reanalysis did not use all the Indian station data (i.e., stations were “blacklisted”) which was NCEP practice when Reanalysis was developed. Since then, operational practice has changed so that Indian stations are not blacklisted and PAOBS are not used. In March 1997, CDAS’s GTS decoder had to be changed to the new operational decoder because NCEP’s mainframes were removed from service. Through an oversight, the I
