edu.ucar.opensky::articles:27085 UCAR/NCAR - Library OpenSky Support PO Box 3000 Boulder CO 80307-3000 opensky@ucar.edu http://opensky.ucar.edu/ homepage pointOfContact 2025-12-24T18:52:45.865557 ISO 19115-2 Geographic Information - Metadata - Part 2: Extensions for Imagery and Gridded Data ISO 19115-2:2009(E) https://n2t.org/ark:/85065/d7xg9w9j https://doi.org/10.5281/zenodo.10076724 https Related Software #1 mahollis3313/TEW-tracks: TEW Tracks A global climatology of diabatic heating in Tropical Easterly Waves 2024-03-15T00:00:00Z publication https://n2t.org/ark:/85065/d7xg9w9j https://doi.org/10.1175/JCLI-D-23-0196.1 Lewis-Merritt, C. author Stachnik, J. P. author Hollis, M. A. author Martin, E. R. author McCrary, Rachel author UCAR/NCAR - Library publisher Tropical easterly waves (TEWs) play a critical role in regulating convection and precipitation across the global tropics. TEWs act as seed disturbances for tropical cyclogenesis, serve as an essential component in monsoon precipitation, and produce large amounts of rainfall and diabatic heating that can strongly affect the large-scale circulation. To help improve our knowledge of a more elusive type of tropical wave, we use satellite and reanalysis estimates of the diabatic heating associated with TEWs that are identified by a tracking algorithm based on low-level curvature vorticity. This study uses the Tropical Rainfall Measuring Mission (TRMM) version 6 convective-stratiform heating (CSH) and spectral latent heating (SLH) orbital products to create a global climatology (1998-2015) of TEW diabatic heating. TEW-specific composites for the satellite -observed vertical structure of diabatic heating are compared to similar terms from MERRA-2 across a variety of tropical regions. There are striking differences between the reanalysis and satellite heating with MERRA-2 having much stronger background heating, especially at low levels. Both the satellite -observed and reanalysis heating profiles show stronger midlevel heating associated with TEWs relative to the unconditional background. Similar patterns of mid- and bottom -heaviness emerge in two-dimensional composites of TEW latent heating as stronger heating rates and percent contributions to the background are generally higher at 500 hPa than at 850 hPa. Although TEWs only represent a few percent of the background heating across the global tropics, they comprise 30%-50% of the heating in the prominent TEW tracks over the northeastern Atlantic and Pacific Oceans. 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 2024 American Meteorological Society (AMS). None eng geoscientificInformation