TY - GEN
T1 - Probing the Oceanic Atmospheric Evolution Characteristics during the 2020 Tropical Cyclone Maysak using the GNSS Radio Occultation and Altimetry Satellite Data
AU - Yu, Shiwei
AU - Liu, Zhizhao
N1 - Funding Information:
Acknowledgments. The grant support from the Key Program of the National Natural Science Foundation of China (project No.: 41730109) is acknowledged. The grant supports from the Hong Kong Research Grants Council (RGC) project (B-Q61L PolyU 152222/17E) are highly appreciated. The support from the project (No. 1-BBWJ) in the Emerging Frontier Area (EFA) Scheme of Research Institute for Sustainable Urban Development (RISUD) of The Hong Kong Polytechnic University is also acknowledged.
Publisher Copyright:
© 2021, The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd.
PY - 2021
Y1 - 2021
N2 - A tropical cyclone (TC) is a rapidly rotating storm system with complex weather phenomena, such as powerful winds, heavy rainstorms, and damaging thunderstorms. It brings enormous effects on human lives and properties over the coastal area. Moreover, the intensity of TCs is showing an increasing trend with global warming. Therefore, monitoring tropical cyclones, including the atmospheric evolution characteristics, is scientifically and practically meaningful. The Global Navigation Satellite System (GNSS) radio occultation (RO) is a powerful tool to study the atmosphere evolution during the TC period. Much more RO sounding data can be utilized than before with the completion of the new generation six-satellite Constellation Observing System for Meteorology Ionosphere and Climate (COSMIC-2) in 2019. In this study, we analyzed the precipitable water vapor (PWV) in the upper atmosphere between 1.6 km and 40.0 km. We classified the region around the TC eye center into five bands according to the distance to the TC eye center: band 1 for the region with a radius of 0–200 km from TC eye center; band 2 for 200–400 km; band 3 for 400–600 km; band 4 for 600–800 km; and band 5 for 800–1000 km. The PWV within the band 1 showed an evident increase from August 28 with a value of ~9.5 kg/m2 to September 1, 2020 with a value of ~43.6 kg/m2, when the TC became increasingly intensified. While the PWV in bands 2 to 5 showed a decreasing trend during this period. The mean PWV gradient was −2.47 kg·m2·(100km)-1 from band 1 to band 2, −.27 kg·m2·(100km)-1 from band 2 to band 3, −1.17 kg·m2·(100km)-1 from band 3 to band 4, and −1.16 kg·m2·(100km)-1 from band 4 to band 5. We also analyzed PWV data from altimetry satellites and found that symmetric spatial gradient of PWV can be apparently observed. These findings can help us further understand the atmospheric evolution characteristics over ocean during the TC period, thus improve the forecast reliability and accuracy.
AB - A tropical cyclone (TC) is a rapidly rotating storm system with complex weather phenomena, such as powerful winds, heavy rainstorms, and damaging thunderstorms. It brings enormous effects on human lives and properties over the coastal area. Moreover, the intensity of TCs is showing an increasing trend with global warming. Therefore, monitoring tropical cyclones, including the atmospheric evolution characteristics, is scientifically and practically meaningful. The Global Navigation Satellite System (GNSS) radio occultation (RO) is a powerful tool to study the atmosphere evolution during the TC period. Much more RO sounding data can be utilized than before with the completion of the new generation six-satellite Constellation Observing System for Meteorology Ionosphere and Climate (COSMIC-2) in 2019. In this study, we analyzed the precipitable water vapor (PWV) in the upper atmosphere between 1.6 km and 40.0 km. We classified the region around the TC eye center into five bands according to the distance to the TC eye center: band 1 for the region with a radius of 0–200 km from TC eye center; band 2 for 200–400 km; band 3 for 400–600 km; band 4 for 600–800 km; and band 5 for 800–1000 km. The PWV within the band 1 showed an evident increase from August 28 with a value of ~9.5 kg/m2 to September 1, 2020 with a value of ~43.6 kg/m2, when the TC became increasingly intensified. While the PWV in bands 2 to 5 showed a decreasing trend during this period. The mean PWV gradient was −2.47 kg·m2·(100km)-1 from band 1 to band 2, −.27 kg·m2·(100km)-1 from band 2 to band 3, −1.17 kg·m2·(100km)-1 from band 3 to band 4, and −1.16 kg·m2·(100km)-1 from band 4 to band 5. We also analyzed PWV data from altimetry satellites and found that symmetric spatial gradient of PWV can be apparently observed. These findings can help us further understand the atmospheric evolution characteristics over ocean during the TC period, thus improve the forecast reliability and accuracy.
KW - Altimetry satellite
KW - GNSS radio occultation
KW - Precipitable water vapor
KW - Tropical cyclone
UR - http://www.scopus.com/inward/record.url?scp=85111462738&partnerID=8YFLogxK
U2 - 10.1007/978-981-16-3138-2_22
DO - 10.1007/978-981-16-3138-2_22
M3 - Conference article published in proceeding or book
AN - SCOPUS:85111462738
SN - 9789811631375
T3 - Lecture Notes in Electrical Engineering
SP - 224
EP - 234
BT - China Satellite Navigation Conference, CSNC 2021, Proceedings
A2 - Yang, Changfeng
A2 - Xie, Jun
PB - Springer Science and Business Media Deutschland GmbH
T2 - 12th China Satellite Navigation Conference, CSNC 2021
Y2 - 22 May 2021 through 25 May 2021
ER -
