As to the data prepared for Global Reanalysis, is the NARR using the data files prepared for the NCEP/NCAR (“R1”) or for the NCEP/DOE (“R2”) reanalysis?
Neither one, strictly speaking. After R1 was completed, two pre-processing errors were identified which afflicted the R1 datasets post-1979. By that we mean the errors were made in converting original sources (from NCAR for instance) into NCEP reanalysis formats (i.e. PREPBUFR). The problems consisted of about 10 years of mis-located PAOBs (Australian bogused sea level pressure data, SH only), and about 10 years when some mainly Scandinavian radiosonde stations were systematically not included. For the R2 reanalysis, the causes of these errors were corrected, and the reanalysis formatted datasets were re-made from the same original sources. Subsequently, it was found that supplemental sig-level winds from some ECMWF decoded radiosondes which had been included in R1, Aug 1989 through Oct. 1991, were left out of the R2 data. These were added to the R2 data for NARR data preparation.
Related Questions
- As to the data prepared for Global Reanalysis, is the NARR using the data files prepared for the NCEP/NCAR ("R1") or for the NCEP/DOE ("R2") reanalysis?
- Where can I find on-line versions of the NCEP/NCAR 40-years reanalysis project?
- Is there a summary of the NCEP model used for NCEP/NCAR Reanalysis project?
