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Re: Rainfall included in assimilation ?

Posted By: John M. Brown
Date: 1-March-03 0033Z

In Response To: Rainfall included in assimilation ? (Jack Glendening)

Just a follow-on to Stan's message. The precipitation input to our land-surface model, which predicts soil moisture and temperature, as well as snow cover, is the precipitation occurring during the first hour of the previous RUC forecast, since we cycle on a 1-hour frequency. The accuracy of our soil moisture, then, will depend in some measure on the accuracy of our 1-h pcpn forecasts. Verifying soil moisture is difficult, but we believe that our 1-h pcpn fcsts are sufficiently accurate to capture at least the broad aspects of soil-mositure spatial gradients and temporal trends. The radar assimilation mentioned by Stan is motivated in part to improve these 1-h pcpn forecasts so that our soil-mositure fields (and surface sensible and latent-heat fluxes are more accurate. John B.

Messages In This Thread

Rainfall included in assimilation ? -- Jack Glendening -- 1-March-03 0033Z

Re: Rainfall included in assimilation ? -- Stan Benjamin -- 1-March-03 0003Z

Re: Rainfall included in assimilation ? -- John M. Brown -- 1-March-03 0033Z

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