Monitoring of water surface temperature of Eurasian large lakes using
MODIS LST product
In this study, data from MODIS land surface temperature product level 3
(MOD11A2) were used to investigate the spatiotemporal variation of
Eurasian lakes water surface temperature (LWST) from 2001 to 2015, and
to examine the most influencing factors of that variation. The
temperature of most lakes in the dry climate zone and in the equatorial
climatic zone varied from 17 to 31°C and from 23 to 27 °C, respectively.
LWSTs in the warm temperate and cold climatic zones were in the range of
20 to 27 °C and -0.6 and 17 °C, respectively. The average daytime LWST
in the polar climate zone was -0.71°C in the summer. Lakes in high
latitude and in the Tibetan Plateau displayed low LWST, ranging from
–11°C to 26°C during the nighttime. Large spatial variations of diurnal
temperature difference (DTD) was observed in lakes across Eurasia.
However, variations in DTDs were small in lakes located in high latitude
and in tropical rainforest regions. The shallow lakes showed a rapid
response of LWST to solar and atmospheric forcing, while in the large
and deep lakes, that response was sluggish. Results of this study
demonstrated the applicability of remote sensing and MODIS LST products
to capture the spatial-temporal variability of LWST across continental
scales, in particular for the vast wilderness areas and protected
environment in high latitude regions of the world. The approach can be
used in future studies examining processes and factors controlling large
scale variability of LWST.