東亞中高緯土壤溫度資料評(píng)估與分析
發(fā)布時(shí)間：2018-11-03 20:41
【摘要】：本文以一套俄羅斯土壤溫度歷史觀測(cè)資料RHSTD為基礎(chǔ),分析了四套土壤溫度產(chǎn)品[ERA-Interim再分析資料、兩套陸面模式離線運(yùn)行產(chǎn)品ERA-Interim/Land(簡(jiǎn)稱ERA-Land)和MERRA-Land、以及一套二十世紀(jì)再分析資料NOAA-CIRES 20CR]在東亞中高緯的可靠性,并重點(diǎn)關(guān)注春夏季,主要結(jié)論如下:觀測(cè)地溫在0~2 m波動(dòng)較大,隨季節(jié)在0°C上下擺動(dòng),而2 m以下地溫穩(wěn)定少變,并且在60°N以北地區(qū)出現(xiàn)永久凍結(jié)。四套地溫產(chǎn)品較好地反映了這些特征。無論春夏,還是年平均,四套地溫產(chǎn)品氣候態(tài)都呈"南暖北冷"的特征,但ERA-Land的空間分布與觀測(cè)最接近。就季節(jié)循環(huán)而言,ERA-Land最能反映該地區(qū)土壤的凍融過程和土壤溫度的季節(jié)演變。四套地溫產(chǎn)品年際變率(標(biāo)準(zhǔn)差)與觀測(cè)的差異隨季節(jié)和土壤層變化大,情況比較復(fù)雜。就年際變化趨勢(shì)而言,四套地溫產(chǎn)品與觀測(cè)的相關(guān)性,夏季好于春季,表層好于深層,并且ERA-Land土壤溫度擁有四套地溫產(chǎn)品最多的共性,最能反映觀測(cè)地溫的年際變化。
[Abstract]:Based on a set of Russian soil temperature historical observation data (RHSTD), four sets of soil temperature products [ERA-Interim reanalysis data], two sets of land surface model off-line operation products ERA-Interim/Land (ERA-Land) and MERRA-Land, were analyzed in this paper. The reliability of a set of reanalysis data (NOAA-CIRES 20CR) in the middle and high latitudes of East Asia in the 20th century is also discussed. The main conclusions are as follows: the observed ground temperature fluctuates greatly at 0 ~ 2 m and wobbles up and down with the season at 0 擄C. However, the ground temperature below 2 m has little change, and there is a permanent freezing in the area north of 60 擄N. Four sets of geothermal products better reflect these characteristics. No matter in spring and summer or in average year, the climate state of the four sets of geothermal products is "warm and cold in the south and north", but the spatial distribution of ERA-Land is the closest to the observation. In terms of seasonal cycle, ERA-Land can best reflect the freezing and thawing process of soil and the seasonal evolution of soil temperature in this area. The differences between interannual variability (standard deviation) and observation of four sets of geothermal products vary greatly with seasons and soil layers. In terms of interannual variation trend, the correlation between the four sets of geothermal products and observations is better in summer than in spring, and in surface layer is better than in deep layer, and ERA-Land soil temperature has the most common features of four sets of geothermal products, which can best reflect the interannual variation of observed ground temperature.
【作者單位】： 成都信息工程大學(xué)大氣科學(xué)學(xué)院/高原大氣與環(huán)境四川省重點(diǎn)實(shí)驗(yàn)室;中國科學(xué)院大氣物理研究所;
【基金】：國家重點(diǎn)研發(fā)計(jì)劃項(xiàng)目高性能計(jì)算項(xiàng)目2016YFB0200800~~
【分類號(hào)】：S152.8
[Abstract]:Based on a set of Russian soil temperature historical observation data (RHSTD), four sets of soil temperature products [ERA-Interim reanalysis data], two sets of land surface model off-line operation products ERA-Interim/Land (ERA-Land) and MERRA-Land, were analyzed in this paper. The reliability of a set of reanalysis data (NOAA-CIRES 20CR) in the middle and high latitudes of East Asia in the 20th century is also discussed. The main conclusions are as follows: the observed ground temperature fluctuates greatly at 0 ~ 2 m and wobbles up and down with the season at 0 擄C. However, the ground temperature below 2 m has little change, and there is a permanent freezing in the area north of 60 擄N. Four sets of geothermal products better reflect these characteristics. No matter in spring and summer or in average year, the climate state of the four sets of geothermal products is "warm and cold in the south and north", but the spatial distribution of ERA-Land is the closest to the observation. In terms of seasonal cycle, ERA-Land can best reflect the freezing and thawing process of soil and the seasonal evolution of soil temperature in this area. The differences between interannual variability (standard deviation) and observation of four sets of geothermal products vary greatly with seasons and soil layers. In terms of interannual variation trend, the correlation between the four sets of geothermal products and observations is better in summer than in spring, and in surface layer is better than in deep layer, and ERA-Land soil temperature has the most common features of four sets of geothermal products, which can best reflect the interannual variation of observed ground temperature.
【作者單位】： 成都信息工程大學(xué)大氣科學(xué)學(xué)院/高原大氣與環(huán)境四川省重點(diǎn)實(shí)驗(yàn)室;中國科學(xué)院大氣物理研究所;
【基金】：國家重點(diǎn)研發(fā)計(jì)劃項(xiàng)目高性能計(jì)算項(xiàng)目2016YFB0200800~~
【分類號(hào)】：S152.8
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