Additional forecast fields available in ERA-40 dataset

Posted on October 25, 2005 (Last modified on October 19, 2023) • 1 min read • 190 words

We have recently added some additional forecast fields available to the ERA-40 dataset held at the BADC. Due to user demand additional single/surface level forecasts have been extracted as follows in the ERA-40 archive:

1. “Maximum/Minimum temperature at 2m since previous post-processing” (MX2T/MN2T) are available at additional forecast steps of +3/+6/+9/+12 hours from both the 00hr and 12hr analyses. Sampling the data at this frequency captures the maximum (or minimum) between each post-processing step (3-hourly frequency).
2. A number of other variables are available at additional forecast steps of +6/+12/+18/+24/+30/+36 hours from both the 00hr and 12hr analyses. These variables are mainly moisture-related fields that are accumulated with time. The data was extracted to allow greater investigation into moisture-related fields within the ERA-40 dataset. The variables are:
   • Snow evaporation (accum.) [ES]
   • Snow melt (accum.) [SMLT]
   • Large scale precipitation fraction (accum.) [LSPF]
   • Large scale precipitation (accum.) [LSP]
   • Convective precipitation (accum.) [CP]
   • Snow fall (accum.) [SF]
   • Evaporation (accum.) [E]
   • Runoff (accum.) [RO]
   • Instantaneous surface moisture flux (evaporation) [IE]
   • Convective snow fall (accum.) [CSF]
   • Large scale snow fall (accum.) [LSF]
   • Wind gusts at 10 m [10FG]
   • Boundary layer height [BLH]

BADC Support 25th October 2005