A metrics‐based analysis of seasonal daily precipitation and near‐surface temperature within seven Coordinated Regional Climate Downscaling Experiment domains

Thumbnail Image
Date
2019-05-01
Authors
Glisan, Justin
Jones, Richard
Lennard, Chris
Castillo Pérez, Nadia
Lucas-Picher, Philippe
Rinke, Annette
Solman, Silvina
Gutowski, William
Major Professor
Advisor
Committee Member
Journal Title
Journal ISSN
Volume Title
Publisher
Authors
Person
Gutowski, William
Professor
Research Projects
Organizational Units
Journal Issue
Is Version Of
Versions
Series
Department
Geological and Atmospheric Sciences
Abstract

We compare ensemble mean daily precipitation and near‐surface temperatures from regional climate model simulations over seven Coordinated Regional Climate Downscaling Experiment domains for the winter and summer seasons. We use Taylor diagrams to show the domain‐wide pattern similarity between the model ensemble and the observational data sets. We use the Climatic Research Unit (CRU) and the University of Delaware gridded observations and ERA‐Interim reanalysis data as an additional observationally based estimate of historical climatology. Taylor diagrams determine the relative skill of the seven sets of simulations and quantify these results in terms of center pattern root‐mean square error and correlation coefficient. Results suggest that there is good agreement between the models and the CRU, in terms of their respective seasonal cycles, as shown in Taylor diagrams and bias plots. There is also good agreement between both gridded observation sets. In addition, downscaled ERA‐Interim precipitation is closer to observations than raw ERA‐Interim precipitation. Domains located in the low latitudes and those having high topography appear to have larger biases, especially precipitation.

Comments

This article is published as Glisan, Justin M., Richard Jones, Chris Lennard, Nadia I. Castillo Pérez, Philippe Lucas‐Picher, Annette Rinke, Silvina Solman, and William J. Gutowski Jr. "A metrics‐based analysis of seasonal daily precipitation and near‐surface temperature within seven Coordinated Regional Climate Downscaling Experiment domains." Atmospheric Science Letters 20, no. 5 (2019): e897. doi: 10.1002/asl.897.

Description
Keywords
Citation
DOI
Copyright
Tue Jan 01 00:00:00 UTC 2019
Collections