Evapotranspiration (ET) is a key component of the hydrological cycle, but traditional monitoring approaches are always based on measurements, which cannot satisfy requirements research regional scale. Hence, ET estimation by remote sensing essential. MOD16 remote-sensing model P-M equation and has good applicability. However, it describes soil moisture indirectly RH, etc., may cause uncertainti...

GLEAM （Global Land Evapotranspiration Amsterdam Model）和MOD16（MODIS Global 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...

Validation of remotely sensed evapotranspiration (RS_ET) products is important because their accuracy critical for various scientific applications. In this study, an integrated validation framework was proposed evaluating RS_ET with coarse spatial resolution extending from homogenous to heterogeneous land surfaces. This applied at the pixel and river basin scales, using direct indirect methods ...

Remotely sensed (RS) evapotranspiration (ET) models can make full use of the land surface information retrieved using remote sensing and are therefore widely used in large-scale ET estimates. The MODIS Global Evapotranspiration model (MOD16) is one most commonly models. MOD16 parameterizes moisture constraints on soil evaporation (Es) atmospheric vapor pressure deficit (VPD) relative humidity (...

局域尺度上的水文或农业应用亟需较高空间分辨率的土壤湿度（SMï¼‰æ•°æ®ï¼Œå¾®æ³¢åœŸå£¤æ¹¿åº¦ç©ºé—´é™å°ºåº¦æ˜¯å®žçŽ°è¿™ä¸€éœ€æ±‚çš„é‡è¦é€”å¾„ã€‚å ¶ä¸­â€œå ‰å­¦/热红外与微波数据融合”的降尺度方法展现出了较大的应用潜力，然而这类方法依赖于遥感地表温度LST（Land Surface Temperature）或由LST分解得到的SM指数，受限于LS...

Brazilian tropical ecosystems in the state of Mato Grosso have experienced significant land use and cover changes during past few decades due to deforestation wildfire. These can directly affect mass energy exchange near surface and, consequently, evapotranspiration (ET). Characterization seasonal patterns ET help understanding how these function with a changing climate. The goal this study was...

Information relating to errors in evapotranspiration (ET) products, including satellite-derived ET is critical their application but often challenging obtain, with a limited number of flux towers available for the sufficient validation measurements. Triple collocation (TC) methods can assess inherent uncertainties above products using just three independent variables as triplet input. However, ...