| 引用本文: | 王容,刘元波,王若男,刘永伟.GLEAM和MOD16蒸散发产品在青藏高原中东南湖泊流域的适用性评价.湖泊科学,2023,35(3):1057-1071. DOI:10.18307/2023.0324 |
| Wang Rong,Liu Yuanbo,Wang Ruonan,Liu Yongwei.Evaluation of GLEAM and MOD16 evapotranspiration products in the central and southeastern lake basins of the Qinghai-Tibet Plateau. J. Lake Sci.2023,35(3):1057-1071. DOI:10.18307/2023.0324 |
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| GLEAM和MOD16蒸散发产品在青藏高原中东南湖泊流域的适用性评价 |
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王容1,2, 刘元波1,2, 王若男1,2, 刘永伟1,2
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1.中国科学院南京地理与湖泊研究所, 中国科学院流域地理学重点实验室, 南京 210008;2.中国科学院大学, 北京 100049
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| 摘要: |
| GLEAM （Global Land Evapotranspiration Amsterdam Model）和MOD16（MODIS Global Evapotranspiration Project）全球蒸散发产品已经得到了广泛的检验和应用，但由于观测资料缺乏，尚缺少对高原地区的检验。本文以青藏高原然乌湖流域、羊卓雍错流域、纳木错流域、色林错流域和塔若错流域为检验区域，利用流域水量平衡法，采用相关系数、相对误差、均方根误差和Kling-Gupta系数，对这两种蒸散产品开展了精度验证与评价。结果表明：GLEAM蒸散发产品在然乌湖、色林错和塔若错流域整体存在低估现象，在羊卓雍错和纳木错流域存在轻微高估现象，而MOD16产品仅在色林错流域有轻微低估现象，在其他湖泊流域均表现为高估；GLEAM和MOD16蒸散发产品在5个湖泊流域年降水量较少的年份均存在高估的现象，在湿润年份则为低估；GLEAM产品在然乌湖流域、羊卓雍错流域和色林错流域的验证结果相对较好，而MOD16产品在纳木错流域和塔若错流域的验证精度相对较高；总体而言，在年尺度和多年平均尺度下，GLEAM蒸散发产品在青藏高原中东南湖泊流域的精度明显优于MOD16产品。本文的研究结果为适用于青藏高原地区蒸散发产品的甄选提供了重要参考。 |
| 关键词: 蒸散发 GLEAM MOD16 流域水量平衡 湖泊流域 青藏高原 |
| DOI：10.18307/2023.0324 |
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| 基金项目:第二次青藏高原综合科学考察研究项目（2019QZKK0202）和国家自然科学基金项目（51879255）联合资助。 |
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| Evaluation of GLEAM and MOD16 evapotranspiration products in the central and southeastern lake basins of the Qinghai-Tibet Plateau |
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Wang Rong1,2, Liu Yuanbo1,2, Wang Ruonan1,2, Liu Yongwei1,2
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1.Key Laboratory of Watershed Geographic Sciences, Nanjing Institute of Geography and Limnology, Chinese Academy of Sciences, Nanjing 210008, P. R. China;2.University of Chinese Academy of Sciences, Beijing 100049, P. R. China
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| Abstract: |
| Global evapotranspiration products from GLEAM (Global Land Evapotranspiration Amsterdam Model) and MOD16 (MODIS Global Evapotranspiration Project) have been widely validated and applied. However, due to insufficient observational data, there is still a lack of products validation in plateau areas. This study took Lake Ranwu, Yamzho YumCo, Nam Co, Siling Co and Taro Co basins as study area, and applied basin water balance, correlation coefficient, relative error, root mean square error and Kling-Gupta coefficient to verify and evaluate the accuracy of GLEAM and MOD16 products in the Qinghai-Tibet Plateau. The results demonstrated that GLEAM products were underestimated in Lake Ranwu, Siling Co and Taro Co basins, slightly overestimated in Yamzho YumCo and Nam Co basins, while MOD16 products were slightly underestimated in Siling Co basin and overestimated in other lake basins. GLEAM and MOD16 products were overestimated in dry year, and underestimated in wet year in the five lake basins. GLEAM products showed high accuracy in Lake Ranwu, Yamzho YumCo and Siling Co basins, while MOD16 products had high accuracy in Nam Co and Taro Co basins. In general, the accuracy of GLEAM products was significantly better than that of MOD16 products in the central and southeastern lake basins of the Qinghai-Tibet Plateau on the annual scale and the multi-year average scale. This results provided an important reference for the selection of evapotranspiration products suitable for the Qinghai-Tibet Plateau. |
| Key words: Evapotranspiration GLEAM MOD16 basin water balance lake basin Qinghai-Tibet Plateau |
