Journal of Geodesy and Geoinformation Science ›› 2020, Vol. 3 ›› Issue (4): 70-78.doi: 10.11947/j.JGGS.2020.0407

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High Elevation Energy and Water Balance: the Roles of Surface Albedo and Temperature

Massimo MENENTI1,2(),Li JIA2(),Marco MANCINI3,Xin LI4,Francesca PELLICCIOTTI5,Kun YANG6,Jiancheng SHI7,Maria Jose ESCORIHUELA8,Chiara CORBARI3,Shaoting REN2,Chunfeng MA9,Chaolei ZHENG2,Lian LIU4,Thomas SHAW10,Baohong DING4,Wei YANG4   

  1. 1. Delft University of Technology, Delft 2600 AA, The Netherlands
    2. State Key Laboratory of Remote Sensing Science, Aerospace Information Research Institute, Chinese Academy of Sciences, Beijing 100101, China
    3. Politecnico di Milano, Milano 20133, Italy
    4. Institute of Tibetan Plateau Research, Chinese Academy of Sciences, Beijing 100101, China
    5. Northumbria University,Newcastle upon Tyne NE1 8ST, United Kingdom
    6. Department of Earth System Science, Tsinghua University, Beijing 100084, China
    7. National Space Science Center, Chinese Academy of Sciences, Beijing 100190, China
    8. IsardSAT,Barcelona 08001, Spain
    9. Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou 730000, China
    10. University of Chile, Santiago 8330180, Chile
  • Received:2020-10-11 Accepted:2020-11-20 Online:2020-12-20 Published:2021-01-15
  • Contact: Li JIA E-mail:M.Menenti@tudelft.nl;jiali@aircas.ac.cn
  • About author:Massimo MENENTI (1949—), male, professor, PhD, majors in optical and laser remote sensing.E-mail: M.Menenti@tudelft.nl
  • Supported by:
    Chinese Academy of Sciences CAS Earth Project(XAD19070102);National Natural Science Foundation of China(91737205);SAFEA Long-Term-Projects of the 1000 Talent Plan for High-Level Foreign Experts(WQ20141100224);Strategic Priority Research Program of the Chinese Academy of Sciences(XDA19030203);Key Research Program of Frontier Sciences of Chinese Academy of Sciences(QYZDJ-SSW-DQC019);European Space Agency Dragon 4 Program (ESRIN/Contract)(4000121196/17/I-NB)

Abstract:

Observation and modeling of the coupled energy and water balance is the key to understand hydrospheric and cryospheric processes at high elevation. The paper summarizes the progress to address this aspect in relation with different earth system elements, from glaciers to wetlands. The energy budget of two glaciers, i.e. Xiao Dongkemadi and Parlung No.4, was studied by means of extended field measurements and a distributed model of the coupled energy and mass balance was developed and evaluated. The need for accurate characterization of surface albedo was further documented for the entire Qinghai Tibet Plateau by numerical experiments with Weather Research and Forecast (WRF) on the sensitivity of the atmospheric boundary layer to the parameterization of land surface processes. A new approach to the calibration of a coupled distributed watershed model of the energy and water balance was demonstrated by a case study on the Heihe River Basin in northwestern China. The assimilation of land surface temperature did lead to the retrieval of critical soil and vegetation properties as the soil permeability and the canopy resistance to the exchange of vapour and carbon dioxide. The retrievals of actual Evapo-Transpiration (ET) were generated by the ETMonitor system and evaluated against eddy covariance measurements at sites spread throughout Asia. As regards glacier response to climate variability, the combined findings based on satellite data and model experiments showed that the spatial variability of surface albedo and temperature is significant and controls both glacier mass balance and flow. Experiments with both atmospheric and hydrosphere-cryosphere models documented the need and advantages of using accurate retrievals of land surface albedo to capture lan-atmosphere interactions at high elevation.

Key words: ice; snow; albedo; energy water balance