Comparison of Weighted Mean Temperature in Greenland Calculated by Four Reanalysis Data

• Published in: Remote Sensing
• Main Authors: Chengcheng Luo, Feng Xiao, Li Gong, Jintao Lei, Wenhao Li, Shengkai Zhang
• Format: Article in Journal/Newspaper
• Language: English
• Published: MDPI AG 2022
• Subjects: reanalysis data; radiosonde data; Greenland; weighted mean temperature; Science; Q; Merra
• Online Access: https://doi.org/10.3390/rs14215431; https://doaj.org/article/962168d923f14b69a1c0bcc61c39309e

The weighted mean temperature ( <math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><msub><mrow><mrow><mtext> </mtext><mi mathvariant="normal">T</mi></mrow></mrow><mi mathvariant="normal">m</mi></msub></mrow></semantics></math> ) is a critical parameter for precipitable water vapor (PWV) retrieval in global navigation satellite system (GNSS) meteorology. Reanalysis data are an important data source for <math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><msub><mi mathvariant="normal">T</mi><mi mathvariant="normal">m</mi></msub></mrow></semantics></math> calculation and <math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><msub><mi mathvariant="normal">T</mi><mi mathvariant="normal">m</mi></msub></mrow></semantics></math> empirical model establishment. This study uses radiosonde data to evaluate the accuracy and the spatiotemporal variation of <math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><msub><mi mathvariant="normal">T</mi><mi mathvariant="normal">m</mi></msub></mrow></semantics></math> that is derived from four reanalysis data, namely, the release of the fifth-generation accurate global atmospheric reanalysis (ERA5), the modern-era retrospective analysis for research and applications version 2 (MERRA-2), the NCEP/DOE, and the NCEP/NCAR, from 2005 to 2019 in Greenland, due to the paucity of research on the performance of <math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><msub><mi mathvariant="normal">T</mi><mi ...