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| Titel |
HadISDH land surface multi-variable humidity and temperature record for climate monitoring |
| VerfasserIn |
K. M. Willett, R. J. H. Dunn, P. W. Thorne, S. Bell, M. de Podesta, D. E. Parker, P. D. Jones, C. N. Jr. Williams |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
1814-9324
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| Digitales Dokument |
URL |
| Erschienen |
In: Climate of the Past ; 10, no. 6 ; Nr. 10, no. 6 (2014-11-21), S.1983-2006 |
| Datensatznummer |
250117076
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| Publikation (Nr.) |
 copernicus.org/cp-10-1983-2014.pdf |
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| Zusammenfassung |
HadISDH.2.0.0 is the first gridded, multi-variable humidity and temperature
in situ observations-only climate-data product that is homogenised and
annually updated. It provides physically consistent estimates for specific
humidity, vapour pressure, relative humidity, dew point temperature, wet bulb
temperature, dew point depression and temperature. It is a monthly mean
gridded (5° by 5°) product with uncertainty estimates that
account for spatio-temporal sampling, climatology calculation, homogenisation
and irreducible random measurement effects. It provides a tool for the
long-term monitoring of a variety of humidity-related variables which have
different impacts and implications for society. It is also useful for climate
model evaluation and reanalyses validation. HadISDH.2.0.0 is shown to be in
good agreement both with other estimates and with theoretical understanding.
The data set is available from 1973 to the present.
The theme common to all variables is of a warming world with more water
vapour present in the atmosphere. The largest increases in water vapour are
found over the tropics and the Mediterranean. Over the tropics and high
northern latitudes the surface air over land is becoming more saturated.
However, despite increasing water vapour over the mid-latitudes and
Mediterranean, the surface air over land is becoming less saturated. These
observed features may be due to atmospheric circulation changes, land–sea
warming disparities and reduced water availability or changed land surface
properties. |
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