中國(guó)地區(qū)三種地表反照率產(chǎn)品比較

doi:10.12306/2020jms.0039

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中國(guó)地區(qū)三種地表反照率產(chǎn)品比較
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                        10.12306/2020jms.0039
                    
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中圖分類號(hào):P422.4
基金項(xiàng)目:國(guó)家重點(diǎn)研發(fā)計(jì)劃資助項(xiàng)目(2019FYB2102003);國(guó)家自然科學(xué)基金青年基金項(xiàng)目(41805083);江蘇省研究生科研與實(shí)踐創(chuàng)新計(jì)劃項(xiàng)目(SJKY19_0949)

Comparison and analysis of surface albedo products in China

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摘要:

利用2007—2011年MODIS、GlobAlbedo和ERA-Interim的3種地表反照率產(chǎn)品,借助地理信息系統(tǒng)(Geographic Information System,GIS)空間化技術(shù),對(duì)中國(guó)地區(qū)3種地表反照率產(chǎn)品進(jìn)行了對(duì)比分析。結(jié)果表明:3種產(chǎn)品與氣象站觀測(cè)值的時(shí)間分布趨勢(shì)一致,冬季高夏季低,且相關(guān)性較高。3種產(chǎn)品中,MODIS與GlobAlbedo的絕對(duì)差異值最小,ERA-Interim與MODIS、GlobAlbedo的絕對(duì)差異值較大。3種產(chǎn)品在青藏高原和西北山地區(qū)域表現(xiàn)出較大的差異,且差異表現(xiàn)為冬半年高,夏半年低。3種產(chǎn)品之間相關(guān)性最高的是MODIS與GlobAlbedo,最低的是MODIS與ERA-Interim,3種產(chǎn)品在40°N以北具有較好的相關(guān)性。且在夏季和冬季地表反照率均值的表現(xiàn)說(shuō)明,ERA-Interim相比MODIS、GlobAlbedo難以反映地表反照率受地形和土地覆被的影響。

Abstract:

Based on the surface albedo products of MODIS, GlobAlbedo and ERA-Interim from 2007 to 2011, the application of three kinds of surface albedo products in China was comparatively analyzed by using GIS (Geographic Information System) spatial technology. Results show that the three products are highly correlated with the meteorological station observations, all of which are high in winter and low in summer. Among the three products, the absolute difference between MODIS and GlobAlbedo is the smallest, and the absolute difference between era-interim and other products is large. The three products show great differences in the Qinghai-Tibet Plateau and the northwest mountainous area, and the differences are high in winter and low in summer. The highest correlation of the three products is MODIS and GlobAlbedo, the lowest is MODIS and ERA-interim, and the three products have a high correlation in the north of 40°N. The mean values of surface albedo in summer and winter of the three products indicate that ERA-Interim, compared with MODIS and GlobAlbedo, is difficult to reflect the influence of terrain and land cover on the surface albedo.

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唐晨凱,曾燕,施國(guó)萍,徐金勤.中國(guó)地區(qū)三種地表反照率產(chǎn)品比較.氣象科學(xué),2022,42(1):70-78 TANG Chenkai, ZENG Yan, SHI Guoping, XU Jinqin. Comparison and analysis of surface albedo products in China. Journal of the Meteorological Sciences,2022,42(1):70-78

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收稿日期:2020-03-25
最后修改日期:2020-04-26
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在線發(fā)布日期: 2022-06-01
出版日期: 2022-05-30

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