{"id":857,"date":"2023-07-02T20:45:25","date_gmt":"2023-07-02T19:45:25","guid":{"rendered":"https:\/\/research.reading.ac.uk\/s2s-summit2023\/?page_id=857"},"modified":"2023-07-02T20:45:25","modified_gmt":"2023-07-02T19:45:25","slug":"abstract092","status":"publish","type":"page","link":"https:\/\/research.reading.ac.uk\/s2s-summit2023\/programme\/abstract092\/","title":{"rendered":"Abstract 092"},"content":{"rendered":"

[vc_row][vc_column][vc_column_text]Abstract ID:<\/strong> 092<\/p>\n

Diagnostics of Tropical Variability in the Unified Forecast System<\/h2>\n

Lead Author:<\/strong> Maria Gehne
\nCU Boulder CIRES, United States of America
\n<\/span><\/p>\n

Keywords:<\/strong> convectively coupled equatorial waves, convection, S2S<\/p>\n

Abstract:<\/strong> Tropical precipitation and circulation are often coupled and span a vast spectrum of scales from a few to several thousands of kilometers and from hours to weeks. Current operational numerical weather prediction (NWP) models struggle with representing the full range of scales of tropical phenomena. Synoptic to planetary scales are of particular importance because improved skill in the representation of tropical larger scale features such as convectively coupled equatorial waves (CCEWs) have the potential of reducing forecast error propagation from the tropics to the midlatitudes.
\nHere we introduce and apply diagnostics from a recently developed tropical variability diagnostics toolbox, where we focus on several versions of the subseasonal-seasonal (S2S) component of the UFS: coupled prototypes 5, 7 and 8. For comparison we also include forecasts from the ECMWF S2S database. The diagnostics include space-time coherence spectra to identify preferred scales of coupling between circulation and precipitation, pattern correlations of Hovm\u00f6ller diagrams to assess model skill in zonal propagation of precipitating features, CCEW skill assessment, plus a diagnostic aimed at evaluating moisture – convection coupling in the tropics.
\nThe comparison between the UFS prototypes highlights the utility of these physically based diagnostics in the pursuit of better understanding of NWP model performance in the tropics, and during model development.<\/p>\n

Co-authors:
\n<\/strong>Brandon Wolding (CU Boulder CIRES)
\nJuliana Dias (NOAA PSL)
\nGeorge Kiladis (NOAA PSL)[\/vc_column_text][vc_separator][\/vc_column][\/vc_row][vc_row][vc_column width=”1\/6″][vc_single_image image=”344″ img_size=”full” onclick=”custom_link” link=”http:\/\/s2sprediction.net\/”][\/vc_column][vc_column width=”1\/6″][vc_single_image image=”345″ img_size=”full” onclick=”custom_link” link=”https:\/\/public.wmo.int\/en”][\/vc_column][vc_column width=”1\/6″][vc_single_image image=”346″ img_size=”full” onclick=”custom_link” link=”https:\/\/community.wmo.int\/activity-areas\/wwrp”][\/vc_column][vc_column width=”1\/6″][vc_single_image image=”347″ img_size=”full” onclick=”custom_link” link=”https:\/\/www.wcrp-climate.org\/”][\/vc_column][vc_column width=”1\/6″][vc_single_image image=”348″ img_size=”full”][\/vc_column][vc_column width=”1\/6″][vc_single_image image=”349″ img_size=”full” onclick=”custom_link” link=”https:\/\/www.reading.ac.uk\/”][\/vc_column][\/vc_row]<\/p>\n","protected":false},"excerpt":{"rendered":"

[vc_row][vc_column][vc_column_text]Abstract ID: 092 Diagnostics of Tropical Variability in the Unified Forecast System Lead Author: Maria Gehne CU Boulder CIRES, United States of America Keywords: convectively coupled equatorial waves, convection, S2S…Read More ><\/a><\/p>\n","protected":false},"author":145,"featured_media":0,"parent":528,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_acf_changed":false,"_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"__cvm_playback_settings":[],"__cvm_video_id":"","footnotes":""},"coauthors":[13],"class_list":["post-857","page","type-page","status-publish","hentry"],"acf":[],"yoast_head":"\nAbstract 092 - WWRP\/WCRP S2S Summit 2023<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/research.reading.ac.uk\/s2s-summit2023\/programme\/abstract092\/\" \/>\n<meta property=\"og:locale\" content=\"en_GB\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Abstract 092 - 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WWRP\/WCRP S2S Summit 2023","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/research.reading.ac.uk\/s2s-summit2023\/programme\/abstract092\/","og_locale":"en_GB","og_type":"article","og_title":"Abstract 092 - WWRP\/WCRP S2S Summit 2023","og_description":"[vc_row][vc_column][vc_column_text]Abstract ID: 092 Diagnostics of Tropical Variability in the Unified Forecast System Lead Author: Maria Gehne CU Boulder CIRES, United States of America Keywords: convectively coupled equatorial waves, convection, S2S...Read More >","og_url":"https:\/\/research.reading.ac.uk\/s2s-summit2023\/programme\/abstract092\/","og_site_name":"WWRP\/WCRP S2S Summit 2023","twitter_card":"summary_large_image","twitter_misc":{"Estimated reading time":"2 minutes","Written by":"Robert Lee"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"WebPage","@id":"https:\/\/research.reading.ac.uk\/s2s-summit2023\/programme\/abstract092\/","url":"https:\/\/research.reading.ac.uk\/s2s-summit2023\/programme\/abstract092\/","name":"Abstract 092 - 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