{"655621":{"#nid":"655621","#data":{"type":"event","title":"A Global Analysis of Glacial Drought Buffering Through the 21st century","body":[{"value":"\u003Ch4\u003E\u003Cstrong\u003EThe School of Earth and Atmospheric Sciences Presents Dr. Lizz Ultee, Middlebury College\u003C\/strong\u003E\u003C\/h4\u003E\r\n\r\n\u003Cp\u003EA Global Analysis of Glacial Drought Buffering Through the 21st century\u003C\/p\u003E\r\n\r\n\u003Cp\u003EGlobal climate model projections suggest that 21st century climate change will bring significant drying in the terrestrial midlatitudes. Runoff from glaciers is\u0026nbsp;known to smooth water availability in glaciated basins, but glacier model projections indicate that glacial runoff will generally diminish through the 21st century.\u0026nbsp;\u0026nbsp;So, to what extent can we expect retreating glaciers to protect downstream areas from drought as the climate continues to change?\u0026nbsp;\u0026nbsp;Without dynamic glacier ice in global climate models (GCMs), a comprehensive picture of future drought conditions in glaciated regions has been elusive.\u0026nbsp;\u0026nbsp;\u003C\/p\u003E\r\n\r\n\u003Cp\u003EIn this\u0026nbsp;talk, I will demonstrate how we have combined CMIP5 climate model output with runoff output from a global glacier model (GloGEM) to produce a modified\u0026nbsp;Standardized Precipitation-Evapotranspiration Index (SPEI) and evaluate glacial buffering of droughts.\u003Cbr \/\u003E\r\nWe find that accounting for glacial runoff tends to increase multi-GCM ensemble mean SPEI (wetter baseline) and reduce drought frequency and severity, even in\u0026nbsp;basins with glacier cover of less than 2% by area.\u0026nbsp;\u0026nbsp;We also find that the strength and future trend of glacial drought buffering depends on basin aridity index and\u0026nbsp;glacial cover, and does not depend on other characteristics such as total basin area or latitude.\u0026nbsp;\u0026nbsp;Glacial drought buffering persists even as glacial runoff is\u0026nbsp;projected to decline through the 21st century.\u003C\/p\u003E\r\n","summary":null,"format":"limited_html"}],"field_subtitle":"","field_summary":"","field_summary_sentence":[{"value":"A seminar by Dr. Lizz Ultee, Earth and Atmospheric Sciences"}],"uid":"34458","created_gmt":"2022-02-21 12:02:28","changed_gmt":"2022-04-21 10:48:16","author":"nlawson3","boilerplate_text":"","field_publication":"","field_article_url":"","field_event_time":{"event_time_start":"2022-04-21T12:00:00-04:00","event_time_end":"2022-04-21T13:00:00-04:00","event_time_end_last":"2022-04-21T13:00:00-04:00","gmt_time_start":"2022-04-21 16:00:00","gmt_time_end":"2022-04-21 17:00:00","gmt_time_end_last":"2022-04-21 17:00:00","rrule":null,"timezone":"America\/New_York"},"extras":[],"hg_media":{"655620":{"id":"655620","type":"image","title":"Liz Ultee","body":null,"created":"1645444772","gmt_created":"2022-02-21 11:59:32","changed":"1645444772","gmt_changed":"2022-02-21 11:59:32","alt":"","file":{"fid":"248562","name":"Liz Ultee.jpg","image_path":"\/sites\/default\/files\/images\/Liz%20Ultee.jpg","image_full_path":"http:\/\/hg.gatech.edu\/\/sites\/default\/files\/images\/Liz%20Ultee.jpg","mime":"image\/jpeg","size":191922,"path_740":"http:\/\/hg.gatech.edu\/sites\/default\/files\/styles\/740xx_scale\/public\/images\/Liz%20Ultee.jpg?itok=k9MVMP5H"}}},"media_ids":["655620"],"groups":[{"id":"364801","name":"School of Earth and Atmospheric Sciences (EAS)"}],"categories":[],"keywords":[{"id":"175623","name":"EAS Seminar"}],"core_research_areas":[],"news_room_topics":[],"event_categories":[{"id":"1795","name":"Seminar\/Lecture\/Colloquium"}],"invited_audience":[{"id":"78761","name":"Faculty\/Staff"},{"id":"177814","name":"Postdoc"},{"id":"174045","name":"Graduate students"},{"id":"78751","name":"Undergraduate students"}],"affiliations":[],"classification":[],"areas_of_expertise":[],"news_and_recent_appearances":[],"phone":[],"contact":[{"value":"\u003Cp\u003EDr. Alexander Robel\u003C\/p\u003E\r\n","format":"limited_html"}],"email":[],"slides":[],"orientation":[],"userdata":""}}}