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On the Importance of a Geostationary View for Tropical Cloud Feedback
- Title
- On the Importance of a Geostationary View for Tropical Cloud Feedback
- Authors
- Lee; Choi; Yong-Sang; Yoon-Kyoung; Hwang; Jiwon; Hu; Xiaoming; Yang; Song
- Ewha Authors
- 최용상; 이윤경
- SCOPUS Author ID
- 최용상; 이윤경
- Issue Date
- 2024
- Journal Title
- Geophysical Research Letters
- ISSN
- 0094-8276
- Citation
- Geophysical Research Letters vol. 51, no. 4
- Keywords
- cloud feedback; geostationary satellite; SST; sun-synchronous satellite; tropical western Pacific
- Publisher
- John Wiley and Sons Inc
- Indexed
- SCIE; SCOPUS
- Document Type
- Article
- Abstract
- This study shows that geostationary satellites are critical to estimate the accurate cloud feedback strength over the tropical western Pacific (TWP). Cloud feedback strength was calculated by the simultaneous relation between cloud cover and sea surface temperature (SST) over the TWP [120°E–170°E, 20°S–20°N]. During 2011–2018, the cloud cover was obtained by geostationary earth orbit satellite (GEO) and low-level earth orbit satellite (LEO) (AGEO, ALEO), and the NOAA's all-sky SST (To) was weighted with the clear-sky fraction observed by GEO and LEO (TwGEO; TwLEO). The linear regression coefficients between clouds and SST are very different: −7.93%K−1 (AGEO/TwGEO), −6.94%K−1 (ALEO/TwGEO), −1.35%K−1 (AGEO/TwLEO), −0.69%K−1 (ALEO/TwLEO), −0.02 %K−1 (AGEO/To), and −0.50 %K−1 (ALEO/To). Among these, only the TwGEO values provided a valid cloud feedback signal. This is because GEO's field of view is large enough to simultaneously capture cloud cover over the entire TWP. © 2024. The Authors.
- DOI
- 10.1029/2023GL106897
- Appears in Collections:
- 공과대학 > 기후에너지시스템공학과 > Journal papers
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