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Errors associated with soil moisture.
Impact of
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heat and
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moisture Fluxes
Errors in the analysis of heat and moisture fluxes from the underlying ground have an important impact on the model surface temperature and moisture values and hence the derived 2m screen temperatures. Fig9.2-9 & Fig9.2.1-10 illustrate the problem. Low-level moisture can impact upon temperature forecasts; if humidity is too low then maximum temperatures can be forecast to be too high (e.g. East England and Germany).
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Users should assess the analysis of temperature and moisture in the area against observations, and modify forecasts accordingly.
Summary of
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soil temperature errors:
Soil moisture and temperature is modelled in four soil levels but there is a considerable lack of real-time observations of soil condition and moisture content. Nevertheless heat and moisture fluxes have an impact on model surface and 2m temperature and moisture.
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