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Change of parameters of BCC/RCG-WG for daily non-precipitation variables in China : 1951-1978 and 1979-2007

Auteur(s) et Affiliation(s)

LIAO, Y.
Lab. for Climate Studies, National Climate Center, Beijing, Chine
State Key Lab. of Earth Surface Processes and Resource Ecology, School of Geography, Normal Univ., Beijing, Chine


Description :
Parameters of weather generator BCC/RCG-WG for daily non-precipitation variables including maximum temperature, minimum temperature and sunshine hours at 669 stations in China are estimated using history daily records from 1951 to 1978 and from 1979 to 2007 respectively. The changes in the parameters for the 2 periods are revealed to explore the impact of climate change on these parameters. While the annual means and the amplitudes of the seasonal cycle show a clear change, the interannual variability, the timings of the seasonal cycles, and the temporal correlations for each variable remain practically unchanged. This indicates that climate changes in China over the last 57 years are mainly reflected in variations in the means and in the strength of the seasonal cycles. The changed parameters have implications for the stationary assumption implied in the parameter estimation and use of the weather generator for climate change studies.


Type de document :
Article de périodique

Source :
Journal of geographical sciences. Acta geographica sinica, issn : 1009-637X, 2013, vol. 23, n°. 4, p. 579-594, nombre de pages : 16, Références bibliographiques : 31 ref.

Date :
2013

Editeur :
Pays édition : Chine

Langue :
Anglais
Droits :
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