Recent land cover changes and sensitivity of the model simulations to various land cover datasets for China

  • Liang Chen
  • Zhuguo Ma
  • Rezaul Mahmood
  • Tianbao Zhao
  • Zhenhua Li
  • Yanping Li
Original Paper

DOI: 10.1007/s00703-016-0478-5

Cite this article as:
Chen, L., Ma, Z., Mahmood, R. et al. Meteorol Atmos Phys (2016). doi:10.1007/s00703-016-0478-5

Abstract

Reliable land cover data are important for improving numerical simulation by regional climate model, because the land surface properties directly affect climate simulation by partitioning of energy, water and momentum fluxes and by determining temperature and moisture at the interface between the land surface and atmosphere. China has experienced significant land cover change in recent decades and accurate representation of these changes is, hence, essential. In this study, we used a climate model to examine the changes experienced in the regional climate because of the different land cover data in recent decades. Three sets of experiments are performed using the same settings, except for the land use/cover (LC) data for the years 1990, 2000, 2009, and the model default LC data. Three warm season periods are selected, which represented a wet (1998), normal (2000) and a dry year (2011) for China in each set of experiment. The results show that all three sets of land cover experiments simulate a warm bias relative to the control with default LC data for near-surface temperature in summertime in most parts of China. It is especially noticeable in the southwest China and south of the Yangtze River, where significant changes of LC occurred. Deforestation in southwest China and to the south of Yangtze River in the experiment cases may have contributed to the negative precipitation bias relative to the control cases. Large LC changes in northwestern Tibetan Plateau for 2000 and 2009 datasets are also associated with changes in surface temperature, precipitation, and heat fluxes. Wind anomalies and energy budget changes are consistent with the precipitation and temperature changes.

Copyright information

© Springer-Verlag Wien 2016

Authors and Affiliations

  • Liang Chen
    • 1
    • 4
  • Zhuguo Ma
    • 1
  • Rezaul Mahmood
    • 2
  • Tianbao Zhao
    • 1
  • Zhenhua Li
    • 3
  • Yanping Li
    • 4
  1. 1.Key Laboratory of Regional Climate Environment for Temperate East Asia, Institute of Atmospheric PhysicsChinese Academy of SciencesBeijingChina
  2. 2.Department of Geography and Geology and Kentucky Climate CenterWestern Kentucky UniversityBowling GreenUSA
  3. 3.Institute of Space and Atmospheric StudiesUniversity of SaskatchewanSaskatoonCanada
  4. 4.Global Institute of Water SecurityUniversity of SaskatchewanSaskatoonCanada

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