edu.ucar.opensky::articles:17422 UCAR/NCAR - Library OpenSky Support PO Box 3000 Boulder CO 80307-3000 opensky@ucar.edu http://opensky.ucar.edu/ homepage pointOfContact 2025-12-26T15:22:20.990530 ISO 19115-2 Geographic Information - Metadata - Part 2: Extensions for Imagery and Gridded Data ISO 19115-2:2009(E) https://n2t.org/ark:/85065/d79s1sb7 Diurnal variation of summer rainfall over the Tibetan Plateau and its neighboring regions revealed by TRMM multi-satellite precipitation analysis 2008-05-01T00:00:00Z publication https://n2t.org/ark:/85065/d79s1sb7 Bai, A. author Liu, Changhai author Liu, X. author UCAR/NCAR - Library publisher This paper investigates the diurnal variation of summertime precipitation over the Tibetan Plateau and its neighboring areas using the TMPA (TRMM Multi-satellite Precipitation Analysis) data during 2002-2006. The TMPA precipitation product is compared with rain gauge observations from 643 meteorological sites in China to confirm its applicability and fidelity. Both composite and harmonic analyses are applied to quantify the diurnal cycles of precipitation intensity and frequency. The harmonic amplitude indicates pronounced daily variability over the Tibetan Plateau and its nearby regions, with the strongest diurnal signal over the central Plateau and Indian Peninsula southwest of the Plateau. The harmonic phase displays that the timing of the maximum precipitation amount and frequency has considerably geographical dependence. Overall, a late-afternoon-evening maximum and a morning minimum are dominant in the central Plateau, whereas a late-night maximum is prevalent around the Plateau and in the Sichuan Basin, and a morning and afternoon maximum appear in the upper and mid-lower reaches of the Yangtze River, respectively. There is a coherent diurnal variation pattern east of the Plateau, characterized by systematically delayed precipitation maximum away from the Plateau. The significant nocturnal rainfall in the Sichuan Basin is likely associated with eastward-propagating convective systems originated over the Tibetan Plateau. 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 An edited version of this paper was published by AGU. Copyright 2008 American Geophysical Union. None eng geoscientificInformation