A new precipitation and drought climatology based on weather patterns.
A new precipitation and drought climatology based on weather patterns.
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DOI：
10.1002/joc.5199
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发表时间：
2018-03
期刊：
影响因子：
--
通讯作者：
Neal R
中科院分区：
文献类型：
--
作者：
Richardson D;Fowler HJ;Kilsby CG;Neal R
Weather‐pattern, or weather‐type, classifications are a valuable tool in many applications as they characterize the broad‐scale atmospheric circulation over a given region. This study analyses the aspects of regional UK precipitation and meteorological drought climatology with respect to a new set of objectively defined weather patterns. These new patterns are currently being used by the Met Office in several probabilistic forecasting applications driven by ensemble forecasting systems. Weather pattern definitions and daily occurrences are mapped to Lamb weather types (LWTs), and parallels between the two classifications are drawn. Daily precipitation distributions are associated with each weather pattern and LWT. Standardized precipitation index (SPI) and drought severity index (DSI) series are calculated for a range of aggregation periods and seasons. Monthly weather‐pattern frequency anomalies are calculated for SPI wet and dry periods and for the 5% most intense DSI‐based drought months. The new weather‐pattern definitions and daily occurrences largely agree with their respective LWTs, allowing comparison between the two classifications. There is also broad agreement between weather pattern and LWT changes in frequencies. The new data set is shown to be adequate for precipitation‐based analyses in the UK, although a smaller set of clustered weather patterns is not. Furthermore, intra‐pattern precipitation variability is lower in the new classification compared to the LWTs, which is an advantage in this context. Six of the new weather patterns are associated with drought over the entire UK, with several other patterns linked to regional drought. It is demonstrated that the new data set of weather patterns offers a new opportunity for classification‐based analyses in the UK.
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DOI：
10.1002/joc.846
发表时间：
2002-11-15
期刊：
INTERNATIONAL JOURNAL OF CLIMATOLOGY
影响因子：
--
作者：
Lloyd-Hughes, B;Saunders, MA
通讯作者：
Saunders, MA
影响因子：
6.4
作者：
Blenkinsop, S.;Fowler, H. J.
通讯作者：
Fowler, H. J.
影响因子：
3.4
作者：
James, P. M.
通讯作者：
James, P. M.
DOI：
10.1196/annals.1446.019
发表时间：
2008-01-01
期刊：
TRENDS AND DIRECTIONS IN CLIMATE RESEARCH
影响因子：
--
作者：
Huth, Radan;Beck, Christoph;Tveito, Ole Einar
通讯作者：
Tveito, Ole Einar
DOI：
10.1002/joc.943
发表时间：
2003-09-01
期刊：
INTERNATIONAL JOURNAL OF CLIMATOLOGY
影响因子：
--
作者：
Fowler, HJ;Kilsby, CG
通讯作者：
Kilsby, CG