Chunhua Jiang, Xiang Gao, Shuaimin Wang, Qianfang An, Meizhen Zhu
{"title":"COSMIC-2与无线电探空仪和ERA5的压力、温度和比湿度比较","authors":"Chunhua Jiang, Xiang Gao, Shuaimin Wang, Qianfang An, Meizhen Zhu","doi":"10.1080/14498596.2023.2250749","DOIUrl":null,"url":null,"abstract":"ABSTRACTPressure, temperature and specific humidity profiles from COSMIC-2 are compared with those from ERA5 and radiosonde data from October 2019 to September 2020. The results demonstrate that COSMIC-2 pressure and specific humidity profiles show relatively poor accuracy and stability in the lower troposphere. The 1D-Var solution effectively improves the accuracy of temperature parameters in the troposphere. Three parameters show high accuracy over one climatological year, but show slight seasonal fluctuations, especially for the specific humidity profiles in summer. Furthermore, COSMIC-2 specific humidity data show low consistency with radiosonde and ERA5 in the equatorial region.KEYWORDS: COSMIC-2ERA5radiosonde1D-Var AcknowledgementsThe authors would like to thank the UCAR (University Corporation for Atmospheric Research) for providing COSMIC-2 profiles data and University of Wyoming for providing radiosonde data. The ECMWF (European Centre for Medium-Range Meteorological Weather Forecasts) is appreciated for providing ERA5 reanalysis products. The numerical calculatione in this study have been done on the supercomputing system in the Supercomputing Center, Shandong University, Weihai.Disclosure statementNo potential conflict of interest was reported by the authors.Data availability statementThe COSMIC-2 profiles data can be downloaded from https://data.cosmic.ucar.edu/gnss-ro/cosmic2/nrt/level2/. The radiosonde data can be downloaded from http://weather.uwyo.edu/upperair/sounding.html. The ERA5 reanalysis products can be downloaded from https://www.ecmwf.int/en/forecasts/datasets/reanalysis-datasets/era5/.Additional informationFundingThis research is founded by the Startup Foundation for Doctors of Liaoning Province. [2021-BS-275], the Scientific Study Project for lnstitutes of Higher Learning, Ministry of Education, Liaoning Province [LJKMZ20220673], the Project supported by the State Key Laboratory of Geodesy and Earths’ Dynamics, Innovation Academy for Precision Measurement Science and Technology [SKLGED2023-3-2]; Project supported by the State Key Laboratory of Geodesy and Earths’Dynamics, Innovation Academy for Precision Measurement Science and Technology.","PeriodicalId":50045,"journal":{"name":"Journal of Spatial Science","volume":null,"pages":null},"PeriodicalIF":1.0000,"publicationDate":"2023-09-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Comparison of pressure, temperature and specific humidity from COSMIC-2 with radiosonde and ERA5\",\"authors\":\"Chunhua Jiang, Xiang Gao, Shuaimin Wang, Qianfang An, Meizhen Zhu\",\"doi\":\"10.1080/14498596.2023.2250749\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"ABSTRACTPressure, temperature and specific humidity profiles from COSMIC-2 are compared with those from ERA5 and radiosonde data from October 2019 to September 2020. The results demonstrate that COSMIC-2 pressure and specific humidity profiles show relatively poor accuracy and stability in the lower troposphere. The 1D-Var solution effectively improves the accuracy of temperature parameters in the troposphere. Three parameters show high accuracy over one climatological year, but show slight seasonal fluctuations, especially for the specific humidity profiles in summer. Furthermore, COSMIC-2 specific humidity data show low consistency with radiosonde and ERA5 in the equatorial region.KEYWORDS: COSMIC-2ERA5radiosonde1D-Var AcknowledgementsThe authors would like to thank the UCAR (University Corporation for Atmospheric Research) for providing COSMIC-2 profiles data and University of Wyoming for providing radiosonde data. The ECMWF (European Centre for Medium-Range Meteorological Weather Forecasts) is appreciated for providing ERA5 reanalysis products. The numerical calculatione in this study have been done on the supercomputing system in the Supercomputing Center, Shandong University, Weihai.Disclosure statementNo potential conflict of interest was reported by the authors.Data availability statementThe COSMIC-2 profiles data can be downloaded from https://data.cosmic.ucar.edu/gnss-ro/cosmic2/nrt/level2/. The radiosonde data can be downloaded from http://weather.uwyo.edu/upperair/sounding.html. The ERA5 reanalysis products can be downloaded from https://www.ecmwf.int/en/forecasts/datasets/reanalysis-datasets/era5/.Additional informationFundingThis research is founded by the Startup Foundation for Doctors of Liaoning Province. [2021-BS-275], the Scientific Study Project for lnstitutes of Higher Learning, Ministry of Education, Liaoning Province [LJKMZ20220673], the Project supported by the State Key Laboratory of Geodesy and Earths’ Dynamics, Innovation Academy for Precision Measurement Science and Technology [SKLGED2023-3-2]; Project supported by the State Key Laboratory of Geodesy and Earths’Dynamics, Innovation Academy for Precision Measurement Science and Technology.\",\"PeriodicalId\":50045,\"journal\":{\"name\":\"Journal of Spatial Science\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":1.0000,\"publicationDate\":\"2023-09-19\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Journal of Spatial Science\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.1080/14498596.2023.2250749\",\"RegionNum\":4,\"RegionCategory\":\"地球科学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q4\",\"JCRName\":\"GEOGRAPHY, PHYSICAL\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Spatial Science","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1080/14498596.2023.2250749","RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"GEOGRAPHY, PHYSICAL","Score":null,"Total":0}
Comparison of pressure, temperature and specific humidity from COSMIC-2 with radiosonde and ERA5
ABSTRACTPressure, temperature and specific humidity profiles from COSMIC-2 are compared with those from ERA5 and radiosonde data from October 2019 to September 2020. The results demonstrate that COSMIC-2 pressure and specific humidity profiles show relatively poor accuracy and stability in the lower troposphere. The 1D-Var solution effectively improves the accuracy of temperature parameters in the troposphere. Three parameters show high accuracy over one climatological year, but show slight seasonal fluctuations, especially for the specific humidity profiles in summer. Furthermore, COSMIC-2 specific humidity data show low consistency with radiosonde and ERA5 in the equatorial region.KEYWORDS: COSMIC-2ERA5radiosonde1D-Var AcknowledgementsThe authors would like to thank the UCAR (University Corporation for Atmospheric Research) for providing COSMIC-2 profiles data and University of Wyoming for providing radiosonde data. The ECMWF (European Centre for Medium-Range Meteorological Weather Forecasts) is appreciated for providing ERA5 reanalysis products. The numerical calculatione in this study have been done on the supercomputing system in the Supercomputing Center, Shandong University, Weihai.Disclosure statementNo potential conflict of interest was reported by the authors.Data availability statementThe COSMIC-2 profiles data can be downloaded from https://data.cosmic.ucar.edu/gnss-ro/cosmic2/nrt/level2/. The radiosonde data can be downloaded from http://weather.uwyo.edu/upperair/sounding.html. The ERA5 reanalysis products can be downloaded from https://www.ecmwf.int/en/forecasts/datasets/reanalysis-datasets/era5/.Additional informationFundingThis research is founded by the Startup Foundation for Doctors of Liaoning Province. [2021-BS-275], the Scientific Study Project for lnstitutes of Higher Learning, Ministry of Education, Liaoning Province [LJKMZ20220673], the Project supported by the State Key Laboratory of Geodesy and Earths’ Dynamics, Innovation Academy for Precision Measurement Science and Technology [SKLGED2023-3-2]; Project supported by the State Key Laboratory of Geodesy and Earths’Dynamics, Innovation Academy for Precision Measurement Science and Technology.
期刊介绍:
The Journal of Spatial Science publishes papers broadly across the spatial sciences including such areas as cartography, geodesy, geographic information science, hydrography, digital image analysis and photogrammetry, remote sensing, surveying and related areas. Two types of papers are published by he journal: Research Papers and Professional Papers.
Research Papers (including reviews) are peer-reviewed and must meet a minimum standard of making a contribution to the knowledge base of an area of the spatial sciences. This can be achieved through the empirical or theoretical contribution to knowledge that produces significant new outcomes.
It is anticipated that Professional Papers will be written by industry practitioners. Professional Papers describe innovative aspects of professional practise and applications that advance the development of the spatial industry.