On the impact of humidity observations in numerical weather prediction

Bengtsson, L.; Hodges, K.I.

doi:10.1111/j.1600-0870.2005.00142.x

Item

ITEM ACTIONSEXPORT

Add to Basket

Local TagsRelease HistoryDetailsSummary

Released

Journal Article

On the impact of humidity observations in numerical weather prediction

MPS-Authors

There are no MPG-Authors in the publication available

External Resource

No external resources are shared

Fulltext (restricted access)

There are currently no full texts shared for your IP range.

Fulltext (public)

1021-1-41041-1-10-20220908.pdf
(Publisher version), 462KB

Supplementary Material (public)

There is no public supplementary material available

Citation

Bengtsson, L., & Hodges, K. (2005). On the impact of humidity observations in numerical weather prediction. Tellus, Series A: Dynamic Meteorology and Oceanography, 57, 701-708. doi:10.1111/j.1600-0870.2005.00142.x.

Cite as: https://hdl.handle.net/21.11116/0000-000C-F338-3

Abstract

The impact of humidity observations on forecast skill is explored by producing a series of global forecasts using initial data derived from the ERA-40 reanalyses system, in which all humidity data have been removed during the data assimilation. The new forecasts have been compared with the original ERA-40 analyses and forecasts made from them. Both sets of forecasts show virtually identical prediction skill in the extratropics and the tropics. Differences between the forecasts are small and undergo characteristic amplification rate. There are larger differences in temperature and geopotential in the tropics but the differences are small-scale and unstructured and have no noticeable effect on the skill of the wind forecasts. The results highlight the current very limited impact of the humidity observations, used to produce the initil state, on the forecasts. © Blackwell Munksgaard, 2005.