閬ユ劅鎶�鏈笌搴旂敤 鈥衡�� 2022, Vol. 37 鈥衡�� Issue (1): 85-93.DOI: 10.11873/j.issn.1004-0323.2022.1.0085

鈥� 闈掍績浼氬崄鍛ㄥ勾涓撴爮 鈥� 涓婁竴绡�    涓嬩竴绡�

TSEB妯″瀷鍦ㄥ鏉備笅鍨潰涓嬫ā鎷熺粨鏋滄瘮杈冪爺绌�

寰愯壋璞�(),涓佸繝鏄�,瀹嬬珛鐢�()   

  1. 瑗垮崡澶у 鍦扮悊绉戝瀛﹂櫌锛岄噸搴� 400715
  • 鏀剁鏃ユ湡:2020-09-18 淇洖鏃ユ湡:2021-12-29 鍑虹増鏃ユ湡:2022-02-20 鍙戝竷鏃ユ湡:2022-04-08
  • 閫氳浣滆��: 瀹嬬珛鐢�
  • 浣滆�呯畝浠�:寰愯壋璞紙1997-锛夛紝濂筹紝浜戝崡淇濆北浜猴紝纭曞+鐮旂┒鐢燂紝涓昏浠庝簨鍦拌〃钂告暎鍙戦仴鎰熶及绠楃爺绌躲��xuyh168@email.swu.edu.cn
  • 鍩洪噾璧勫姪:
    鍥藉鑷劧绉戝鍩洪噾椤圭洰鈥滆�﹀悎鍦熷¥姘村垎鐨勫湡澹よ捀鍙戝拰妞嶈钂歌吘閬ユ劅浼扮畻涓庨獙璇佺爺绌垛��(42071298);鈥滄祦鍩熷昂搴﹀湡澹よ捀鍙戝拰妞嶈钂歌吘閬ユ劅浼扮畻涓庨獙璇佺爺绌垛��(41701377)

Comparative Study of Simulation Results of TSEB Model under Various Landcovers and Environment Conditions

Yanhao Xu(),Zhonghao Ding,Lisheng Song()   

  1. School of Geographical Sciences锛孲outhwest University锛孋hongqing 400715锛孋hina
  • Received:2020-09-18 Revised:2021-12-29 Online:2022-02-20 Published:2022-04-08
  • Contact: Lisheng Song

鎽樿锛�

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鍏抽敭璇�: 钂告暎鍙�, TSEB妯″瀷, Landsat鍜孧ODIS閬ユ劅鏁版嵁, 鐪熷疄鎬ф楠�

Abstract:

Land surface evapotranspiration has an important impact on the simulation of earth鈥檚 hydrological processes and hydrological balance锛� especially in the arid and semi-arid regions. Where the heterogeneous land surface conditions pose new challenges to the simulation of evapotranspiration using the remote sensing models. In this paper锛� the satellite data collected from Landsat and MODIS were used as driving data of TSEB model锛� respectively锛� to obtain the temporal and spatial distribution pattern of land surface evapotranspiration in the downstream of the Heihe watershed. Then the surface heat fluxes measured by the large aperture scintillator with a source area of several kilometers and the eddy covariance with a source area of several hundred meters were used to evaluate the model outputs at the multiple spatial scales. The results showed that the TSEB estimated surface sensible heat flux using Landsat and MODIS data is comparable with the observations from the large aperture scintillator锛� with Root Mean Square Error 锛圧MSE锛塿alues of 48.47 W/m2 and 58.57W/m2锛� respectively. While comparing with the observation of eddy covariance锛� the Landsat data-driven TSEB estimates produced RMSE value of 89.37W/m2. Therefore锛� it can conclude that the TSEB model has a better agreement with ground measurements when using the finer satellite remote sensing data as model inputs. In addition锛� large aperture scintillator observation with a source area of several kilometers can partially solve the spatial mismatch issues between the remote sensing products and the ground measurements.

Key words: Evapotranspiration, TSEB model, Landsat and MODIS remote sensing data, Validation

涓浘鍒嗙被鍙�: