TITLE:
Study on the Applicability of ERA5 Reanalysis Data at Lake Taihu
AUTHORS:
Bo Wang, Dongmei Chen, Meiqi Song
KEYWORDS:
Lake Taihu, ERA5 Reanalysis Data, Meteorological Variables, Comparison, Applicability
JOURNAL NAME:
Journal of Geoscience and Environment Protection,
Vol.10 No.12,
December
7,
2022
ABSTRACT: Lakes are an important component of the earth climate system. They play
an important role in the study of basin weather forecasting, air quality
forecasting, and regional climate research. The
accuracy of driving variables is the basic premise to ensure the rationality of
lake mode simulation. Based on the in-situ observations at Bifenggang site of the Lake Taihu Eddy flux Network from 2012
to 2017, this paper investigated temporal variations in temperature, relative
humidity, wind speed, radiation components at different time scales
(hourly, seasonal and interannual). ERA5
reanalysis data were compared with in-situ observation to quantify the error and evaluate the performance of reanalysis
data. The results show that: 1) On the hourly scale, the ERA5 reanalysis data
described air temperature, and downward long-wave radiation more accurately. 2) On
the seasonal variation scale, the ERA5 reanalysis data described air
temperature, and downward long-wave radiation more accurately. However, the
descriptions of wind speed, relative humidity and downward short-wave have
large deviations. 3) On the interannual scale, the ERA5 reanalysis data show a
good performance for temperature, followed by downward longwave radiation, downward
shortwave radiation and relative humidity.