A 59-year (1948-2006) global meteorological forcing data set for land surface models. Part II: Global snowfall estimation
A 59-year (1948-2006) global meteorological forcing data set for land surface models. Part II: Global snowfall estimation
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59 年（1948-2006）全球陆地表面模型气象强迫数据集。
DOI：
10.3178/hrl.2.65
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发表时间：
2008
影响因子：
1.1
通讯作者：
P. Döll
中科院分区：
文献类型：
--
作者：
Y. Hirabayashi;S. Kanae;K. Motoya;K. Masuda;P. Döll
根据逐日气象资料和量规类型，对降雪量和降雨量进行了量规欠集校正，估算了1948-2006年59年间全球陆地降雪量。经过量规修正后，全球年降雪量估计值从9.4万千米增加到12.3万千米，陆地年降水量从112.8千米增加到119.6×103千米。降雪量占总降水量的比例由8.3%提高到10.3%。使用湿球温度的降雪量识别方法产生的降雪量值比使用0°C阈值方法和基于再分析的产品获得的降雪量值更大。相比之下，总降雨量的增加是通过使用先前研究的修正系数的气候学获得的增加的一半。估计59年的降雪量时间序列在20世纪80年代中期之后呈现下降趋势，这表明近几十年来降雪量的减少与气候变暖有关。
Global terrestrial snowfall was estimated for 59 years from 1948 to 2006 by applying gauge undercatch correction for snowfall and rainfall based on daily meteorological data and gauge type. Following gauge correction, global annual snowfall estimation increased from 9.4 to 12.3 × 10 3 km 3 , while annual terrestrial precipitation increased from 112.8 to 119.6 × 10 3 km 3 . Percentage of snowfall in total precipitation increased from 8.3 to 10.3% with gauge correction. The snowfall distinction method using wet-bulb temperature produced larger values for snowfall than those obtained using a 0°C threshold method and those from reanalysis-based products. In contrast, the increase in total precipitation was half of the increase obtained by using a climatology of correction coefficients from previous studies. The estimated 59-year time series of snowfall amount showed a downward trend after the mid-1980s, suggesting a decrease in snowfall associated with a warmer climate in recent decades.
影响因子：
6.3
作者：
Hanasaki, N.;Kanae, S.;Tanaka, K.
通讯作者：
Tanaka, K.