Detecting tropical convection using AVHRR satellite data

Van Hees, Richard M., Lelieveld, Jos and Collins, William D. ORCID: https://orcid.org/0000-0002-4463-9848 (1999) Detecting tropical convection using AVHRR satellite data. Journal of Geophysical Research Atmospheres, 104 (D8). pp. 9213-9228. ISSN 0148-0227

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Abstract

A new method is introduced to identify active convective cloud regions in high-resolution AVHRR satellite data. This method is developed to overcome several limitations of existing visible/infrared techniques. Steep temperature gradients between the convective overshoots of cumulonimbus clouds and the surrounding cirrus are used to identify the edges of active convective regions. The limitations of previous methods are shown using up to 1.1 km resolution AVHRR data of the NOAA-11 and NOAA-12 satellites collected during the Central Equatorial Pacific Experiment (CEPEX), a measurement campaign that took place over the central Pacific Ocean between March 7 and April 6, 1993. Differences in the identification of convection between the new algorithm and the existing algorithms are clarified by a case study and further illustrated by three collocations between NOAA-11 and NOAA-12 overpasses and observations made with the Massachusetts Institute of Technology (MIT) 5 cm Doppler radar onboard the research vessel R/V Vickers.

Item Type:	Article
Uncontrolled Keywords:	condensed matter physics,physical and theoretical chemistry,polymers and plastics,materials chemistry ,/dk/atira/pure/subjectarea/asjc/3100/3104
Faculty \ School:	Faculty of Science > School of Environmental Sciences
Related URLs:	https://www.scopus.com/pages/publication...
Depositing User:	LivePure Connector
Date Deposited:	07 Jul 2026 12:54
Last Modified:	08 Jul 2026 14:34
URI:	https://ueaeprints.uea.ac.uk/id/eprint/103742
DOI:	10.1029/1998JD200079

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