Summary of data deficiencies in the ERA-15 archive

Date	Time	Step	Parameter	Level	Notes
17 November 1981	12	+ 00	specific humidity	model level 22	missing data *
01 December 1982	00	+ 12h	convective precipitation	sfc	not obviously bad, but should be treated with care
01 December 1982	00	+ 24 h	convective precipitation	sfc	corrupted
05 February 1982	06		relative humidity	all pressure levels	missing *
23 December 1983	12	+ 00	cloud water	all model levels	missing *
24 December 1983	00/06	+ 00	cloud water	all model levels	missing *
27 December 1983	00	+ 00	cloud water	all model levels	missing *
31 December 1983	06	+ 00	cloud water	all model levels	missing *

Table 1 Summary of miscellaneous data deficiencies in the ERA-15 archive

* Due to technical problems a few GRIB-fields in ERA-15 were never, or incompletely, archived.
The root cause was a ftp-problem when transferring GRIB data from the super-computer used for the data assimilation to the server used for the archiving The missing data known to us are listed above. Should any other missing field be encountered, please report to era@ecmwf.int