edu.ucar.opensky::articles:23283 UCAR/NCAR - Library OpenSky Support PO Box 3000 Boulder CO 80307-3000 opensky@ucar.edu http://opensky.ucar.edu/ homepage pointOfContact 2025-12-25T15:13:34.239950 ISO 19115-2 Geographic Information - Metadata - Part 2: Extensions for Imagery and Gridded Data ISO 19115-2:2009(E) https://n2t.org/ark:/85065/d7sq93m7 https://doi.org/10.7289/V5QZ281S https Related Dataset #1 International Satellite Cloud Climatology Project (ISCCP) Climate Data Record, H-Series https://doi.org/10.1594/PANGAEA.877914 https Related Dataset #2 A comprehensive Mesoscale Convective System (MSC) dataset, links to files in MatLab and plain text format Footprint of tropical mesoscale convective system variability on stratospheric water vapor 2020-03-16T00:00:00Z publication https://n2t.org/ark:/85065/d7sq93m7 https://doi.org/10.1029/2019GL086320 Dong, Wenhao author Lin, Y. L. author Zhang, M. H. author Huang, X. M. author UCAR/NCAR - Library publisher Mesoscale convective systems (MCSs) play a dominant role in tropical climate. However, the variabilities of their occurrences on a tropical-wide scale remain elusive, and the way they impact the tropical stratospheric moisture remains under debate. Based on a comprehensive global MCS data set during 1985-2008, we detect distinct transitions in tropical MCS activities, with the occurrence frequency of MCS during 1995-2002 being significantly lower than those before and after this period by over 10%. The stepwise transition of tropical MCSs has a significant impact on stratospheric water vapor: Active MCS occurrences result in an overall drier stratosphere, and vice versa. We demonstrate that these changes are closely related to the sea surface temperature pattern in the tropical central Pacific and the associated Walker circulation shift on convective systems. Our results suggest that the sea surface temperature variability in tropical central Pacific may exert an important forcing on the stratospheric water vapor. UCAR/NCAR - Library OpenSky Support PO Box 3000 Boulder CO 80307-3000 opensky@ucar.edu http://opensky.ucar.edu/ homepage pointOfContact PDF Text theme Resource Type 2016-01-01T00:00:00Z publication Copyright 2020 American Geophysical Union. None eng geoscientificInformation