Page 38 - 《高原气象》2023年第1期

高 原 气 象 42 卷
34

Characteristics of Distributions and Changes of Surface Sensible and

Latent Heat Fluxes on the Qinghai-Xizang Plateau based on
the Noah-MP Land Surface Model

1
WANG Shuzhou ， MA Yaoming 2， 3， 4， 5 ， WU Wenyu 6， 7
（1. Key Laboratory of Meteorological Disasters of Ministry of Education / Collaborative Innovation Center on Forecast and Evaluation
of Meteorological Disasters， Nanjing University of Information Science and Technology， Nanjing 210044， Jiangsu， China；
2. Land-Atmosphere Interaction and its Climatic Effects Group， State Key Laboratory of Tibetan Plateau Earth system，
Resources and Environment， Beijing 100101， China；
3. Key Laboratory of Tibetan Environment Changes and Land Surface Processes，
Chinese Academy of Sciences， Beijing 100101， China；
4. University of Chinese Academy of Sciences， Beijing 100049， China；
5. Lanzhou University， Lanzhou 730000， Gansu， China；
6. Anhui Institute of Meteorological Sciences， Hefei 230031， Anhui， China；
7. Anhui Province Key Laboratory of Atmospheric Science and Satellite Remote Sensing， Hefei 230031， Anhui， China）

Abstract： The Noah-MP land surface model with modified thermal roughness length parameterization scheme
was used for the simulation of land surface process on the Qinghai-Xizang Plateau （QXP） during 2000 -2018，
using the high-resolution meteorological forcing dataset for China. Characteristics of distributions and changes of
surface sensible heat （SH） and latent heat （LH） fluxes on the QXP were analyzed after the verification of the
simulation results against the in situ observation. It is found that the Noah-MP model can well simulate the sur‐
face sensible and latent heat fluxes on the QXP. The central and western QXP had larger inter-annual variations of
sensible and latent heat fluxes. The sensible heat fluxes in the central and western QXP were larger than those in
the eastern QXP. The sensible heat fluxes on the QXP exhibited an increasing trend. For the entire QXP， the in‐
creasing trend began probably from 2002. One the whole， the sensible heat fluxes in all seasons increased from
then， especially after 2010. The latent heat fluxes in the eastern QXP were larger than those in central and west‐
ern QXP. The variations of latent heat fluxes were smaller than sensible heat fluxes in the corresponding regions.
The latent heat fluxes decreased in the central QXP， while increased in the eastern and western QXP. For the en‐
tire QXP， there was a weak increasing trend in latent heat fluxes. There was a decreasing trend during 2003
-2015， after the increasing trend during 2000 -2003. Overall， the increasing trend during 2000 -2018 was
weak， and that might due to the decrease in summer latent heat fluxes.
Key words： Qinghai-Xizang Plateau； sensible heat fluxes （SH）； latent heat fluxes （LH）； numerical simulation