A Comprehensive Evaluation of Five Evapotranspiration Datasets Based on Ground and GRACE Satellite Observations: Implications for Improvement of Evapotranspiration Retrieval Algorithm
نویسندگان
چکیده
Evapotranspiration (ET) is a vital part of the hydrological cycle and water–energy balance. To explore characteristics five typical remote sensing evapotranspiration datasets provide guidance for algorithm development, we used reconstructed (Recon) data based on ground GRACE satellite observations as benchmark evaluated 592 watersheds across continental United States. The Global Land Evaporation Amsterdam Model (GLEAM) dataset (with bias RMSE values 23.18 mm/year 106.10 mm/year, respectively), process-based land surface evapotranspiration/heat flux (P-LSH) (bias = 22.94 114.44 mm/year) Penman–Monteith–Leuning (PML) generated ET ?17.73 108.97 showed better performance yearly scale, followed by model tree ensemble (MTE) 99.45 141.32 moderate-resolution imaging spectroradiometer (MODIS) ?106.71 158.90 mm/year). P-LSH outperformed other four seasonal especially from March to August. Both PML MTE overall accuracy could accurately capture spatial variability in arid regions. GLEAM products were consistent with Recon middle-value section. MODIS had larger whereby tended underestimate overestimate all sections, respectively. In future, aim should be reduce algorithms further improve seasonality estimation algorithm, while improved Our analysis suggests that combining artificial intelligence or data-driven physical process will quality datasets, well enhancing their capacity applied different climate
منابع مشابه
application of upfc based on svpwm for power quality improvement
در سالهای اخیر،اختلالات کیفیت توان مهمترین موضوع می باشد که محققان زیادی را برای پیدا کردن راه حلی برای حل آن علاقه مند ساخته است.امروزه کیفیت توان در سیستم قدرت برای مراکز صنعتی،تجاری وکاربردهای بیمارستانی مسئله مهمی می باشد.مشکل ولتاژمثل شرایط افت ولتاژواضافه جریان ناشی از اتصال کوتاه مدار یا وقوع خطا در سیستم بیشتر مورد توجه می باشد. برای مطالعه افت ولتاژ واضافه جریان،محققان زیادی کار کرده ...
15 صفحه اولWater balance-based actual evapotranspiration reconstruction from ground and satellite observations over the conterminous United States
The objective of this study is to produce an observationally based monthly evapotranspiration (ET) product using the simple water balance equation across the conterminous United States (CONUS). We adopted the best quality ground and satellite-based observations of the water budget components, i.e., precipitation, runoff, and water storage change, while ET is computed as the residual. Precipitat...
متن کاملEvapotranspiration Estimate over an Almond Orchard Using Landsat Satellite Observations
California growers face challenges with water shortages and there is a strong need to use the least amount of water while optimizing yield. Timely information on evapotranspiration (ET), a dominant component of crop consumptive water use, is critical for growers to tailor irrigation management based on in-field spatial variability and in-season variations. We evaluated the performance of a remo...
متن کاملAssessing interannual variability of evapotranspiration at the catchment scale using satellite‐based evapotranspiration data sets
[1] The catchment water‐energy balance at the interannual scale remains a challenge for bridging the important gap in our knowledge of the hydrologic cycle. This study investigates interannual evapotranspiration (ET) variability and water‐energy balance at over 547 catchments across the contiguous United States in different climate zones. The investigation is based on ET data estimated from sat...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Remote Sensing
سال: 2021
ISSN: ['2315-4632', '2315-4675']
DOI: https://doi.org/10.3390/rs13122414