edu.ucar.opensky::articles:22236 UCAR/NCAR - Library OpenSky Support PO Box 3000 Boulder CO 80307-3000 opensky@ucar.edu http://opensky.ucar.edu/ homepage pointOfContact 2025-12-25T15:44:40.123926 ISO 19115-2 Geographic Information - Metadata - Part 2: Extensions for Imagery and Gridded Data ISO 19115-2:2009(E) https://n2t.org/ark:/85065/d7x351fp High-frequency intermittency in observed and model-simulated precipitation 2018-11-28T00:00:00Z publication https://n2t.org/ark:/85065/d7x351fp https://doi.org/10.1029/2018GL078926 Covey, C. author Doutriaux, C. author Gleckler, P. J. author Taylor, K. E. author Trenberth, Kevin E. author Zhang, Yongxin author UCAR/NCAR - Library publisher A newly reprocessed, bias-corrected version of hourly satellite observations that provides global coverage of precipitation at high space-time resolution is evaluated and compared with climate model simulations. Irregular subdaily fluctuations are the dominant component around the world, greater than variance of daily mean precipitation, and much greater than variance associated with the mean diurnal cycle of precipitation. Irregular subdaily fluctuations of precipitation are severely underestimated by models, even after taking into account the observational error bars implied by different space-time resolutions. Variance of daily mean precipitation is less severely underestimated. Although mean diurnal cycle amplitudes vary among the models, this component is but a small part of total precipitation variance. Therefore, the total precipitation variance is significantly underestimated by models in general. Further exploration of model-data discrepancies in precipitation at high-time frequency may lead to new and useful climate model diagnostics. 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 2018 Author(s). This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International license. None eng geoscientificInformation