Comparison Analysis of Total Precipitable Water of Satellite-Borne Microwave Radiometer Retrievals and Island Radiosondes
Total precipitable water (TPW) of satellite-borne microwave radiometer retrievals is compared with the data that were collected from 49 island radiosonde stations for the period 2007−2015. Great consistency was found between TPW measurements made by radiosonde and eight satellite-borne mic...
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MDPI AG
2019-07-01
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| Series: | Atmosphere |
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| Online Access: | https://www.mdpi.com/2073-4433/10/7/390 |
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| author | Ji-Ping Guan Yan-Tong Yin Li-Feng Zhang Jing-Nan Wang Ming-Yang Zhang |
| author_facet | Ji-Ping Guan Yan-Tong Yin Li-Feng Zhang Jing-Nan Wang Ming-Yang Zhang |
| author_sort | Ji-Ping Guan |
| collection | DOAJ |
| description | Total precipitable water (TPW) of satellite-borne microwave radiometer retrievals is compared with the data that were collected from 49 island radiosonde stations for the period 2007−2015. Great consistency was found between TPW measurements made by radiosonde and eight satellite-borne microwave radiometers, including SSMI-F13, SSMI-F14, SSMIS-F16, SSMIS-F17, AMSR-E, AMSR-2, GMI, and WindSat. Mean values of the TPW differences for eight satellites ranged from −0.51 to 0.38mm, both root mean square errors and standard deviations were around 3mm, and all of the correlation coefficients between satellite TPW retrievals and radiosonde TPW for each satellite can reach 0.99. Subsequently, an analysis of the comparison results was conducted, which revealed three problems in the satellite TPW retrieval and two problems in radiosonde data. For TPW retrievals of satellite, when the values are above 60 mm, the precision of TPW retrieval significantly decreases with a distinct dry bias, which can reach 4 mm; additionally, abias related to wind speed and the uncertainty with the TPW retrieval in the presence of rain, which is stronger than 1mm/h, was found. The TPW measurements of radiosonde made by the type of IM-MK3 from India were quite unreliable, and almost all of the radiosonde data during the daytime were plagued by a dry bias. |
| first_indexed | 2024-12-13T15:34:49Z |
| format | Article |
| id | doaj.art-61bbe489916e4364a87c40c143ac8e80 |
| institution | Directory Open Access Journal |
| issn | 2073-4433 |
| language | English |
| last_indexed | 2024-12-13T15:34:49Z |
| publishDate | 2019-07-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Atmosphere |
| spelling | doaj.art-61bbe489916e4364a87c40c143ac8e802022-12-21T23:40:04ZengMDPI AGAtmosphere2073-44332019-07-0110739010.3390/atmos10070390atmos10070390Comparison Analysis of Total Precipitable Water of Satellite-Borne Microwave Radiometer Retrievals and Island RadiosondesJi-Ping Guan0Yan-Tong Yin1Li-Feng Zhang2Jing-Nan Wang3Ming-Yang Zhang4College of Meteorology and Oceanography, National University of Defense Technology, Nanjing 211101, ChinaXichang Satellite Launch Center, Xichang 210007, ChinaCollege of Meteorology and Oceanography, National University of Defense Technology, Nanjing 211101, ChinaCollege of Meteorology and Oceanography, National University of Defense Technology, Nanjing 211101, ChinaCollege of Meteorology and Oceanography, National University of Defense Technology, Nanjing 211101, ChinaTotal precipitable water (TPW) of satellite-borne microwave radiometer retrievals is compared with the data that were collected from 49 island radiosonde stations for the period 2007−2015. Great consistency was found between TPW measurements made by radiosonde and eight satellite-borne microwave radiometers, including SSMI-F13, SSMI-F14, SSMIS-F16, SSMIS-F17, AMSR-E, AMSR-2, GMI, and WindSat. Mean values of the TPW differences for eight satellites ranged from −0.51 to 0.38mm, both root mean square errors and standard deviations were around 3mm, and all of the correlation coefficients between satellite TPW retrievals and radiosonde TPW for each satellite can reach 0.99. Subsequently, an analysis of the comparison results was conducted, which revealed three problems in the satellite TPW retrieval and two problems in radiosonde data. For TPW retrievals of satellite, when the values are above 60 mm, the precision of TPW retrieval significantly decreases with a distinct dry bias, which can reach 4 mm; additionally, abias related to wind speed and the uncertainty with the TPW retrieval in the presence of rain, which is stronger than 1mm/h, was found. The TPW measurements of radiosonde made by the type of IM-MK3 from India were quite unreliable, and almost all of the radiosonde data during the daytime were plagued by a dry bias.https://www.mdpi.com/2073-4433/10/7/390total precipitable watermicrowave radiometer retrievalsisland radiosondescomparison analysis |
| spellingShingle | Ji-Ping Guan Yan-Tong Yin Li-Feng Zhang Jing-Nan Wang Ming-Yang Zhang Comparison Analysis of Total Precipitable Water of Satellite-Borne Microwave Radiometer Retrievals and Island Radiosondes Atmosphere total precipitable water microwave radiometer retrievals island radiosondes comparison analysis |
| title | Comparison Analysis of Total Precipitable Water of Satellite-Borne Microwave Radiometer Retrievals and Island Radiosondes |
| title_full | Comparison Analysis of Total Precipitable Water of Satellite-Borne Microwave Radiometer Retrievals and Island Radiosondes |
| title_fullStr | Comparison Analysis of Total Precipitable Water of Satellite-Borne Microwave Radiometer Retrievals and Island Radiosondes |
| title_full_unstemmed | Comparison Analysis of Total Precipitable Water of Satellite-Borne Microwave Radiometer Retrievals and Island Radiosondes |
| title_short | Comparison Analysis of Total Precipitable Water of Satellite-Borne Microwave Radiometer Retrievals and Island Radiosondes |
| title_sort | comparison analysis of total precipitable water of satellite borne microwave radiometer retrievals and island radiosondes |
| topic | total precipitable water microwave radiometer retrievals island radiosondes comparison analysis |
| url | https://www.mdpi.com/2073-4433/10/7/390 |
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