Evaluating the Reliability of Air Temperature from ERA5 Reanalysis Data

The reliability of ERA5 satellite-based air temperature data is under investigation in this paper. To evaluate this, the ERA5 data will be compared with land-based data obtained from weather stations on the Global Historical Climatology Network. Two climate regions are taken into consideration, temp...

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Bibliographic Details
Published in:arXiv.org 2022-04
Main Authors: McNicholl, Barry, Yee Hui Lee, Campbell, Abraham G, Soumyabrata Dev
Format: Article
Language:English
Subjects:
Air temperature
Climate
Climatology
Regression models
Reliability analysis
Satellite temperature
Statistical analysis
Temperature
Tropical environments
Weather stations
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Summary:The reliability of ERA5 satellite-based air temperature data is under investigation in this paper. To evaluate this, the ERA5 data will be compared with land-based data obtained from weather stations on the Global Historical Climatology Network. Two climate regions are taken into consideration, temperate and tropical. Five years' worth of data is collected and compared through box plots, regression models and statistical metrics. The results show that the satellite temperature performs better in the temperate region than the tropical region. This suggests that the time of year and climate region have an impact on the accuracy of the satellite data as milder temperatures produce better approximations.
ISSN:2331-8422