{"624187":{"#nid":"624187","#data":{"type":"event","title":"The Atmospheric Life Cycle of Pollen","body":[{"value":"\u003Ch4\u003E\u003Cstrong\u003EThe School of Earth and Atmospheric Sciences Presents Dr. Allison Steiner, University of Michigan\u003C\/strong\u003E\u003C\/h4\u003E\r\n\r\n\u003Cp\u003EThe Atmospheric Life Cycle of Pollen\u003C\/p\u003E\r\n\r\n\u003Cdiv\u003EAnemophilous, or wind-driven, pollen is released from vegetation in the mid-latitudes and uses the atmosphere to disperse genetic material.\u0026nbsp; The release of pollen is closely tied to atmospheric conditions such as temperature, precipitation, humidity and wind, and as a result, is susceptible to the effects of climate change and phenological shifts in vegetation.\u0026nbsp;\u0026nbsp;\u003C\/div\u003E\r\n\r\n\u003Cdiv\u003E\u0026nbsp;\u003C\/div\u003E\r\n\r\n\u003Cdiv\u003EPollen grains generally have a short residence time in the atmosphere, but\u0026nbsp;pollen can rupture in the atmosphere creating smaller fragments known as sub-pollen particles (SPP), which can change the size distribution of particles and potentially contribute to organic aerosols.\u0026nbsp; SPP are known to act as cloud condensation nuclei and ice nucleating particles, thereby having the ability to affect the formation of clouds and affect precipitation and the radiative budget.\u0026nbsp;\u0026nbsp;\u003C\/div\u003E\r\n\r\n\u003Cdiv\u003E\u0026nbsp;\u003C\/div\u003E\r\n\r\n\u003Cdiv\u003EIn this talk, I will discuss a new comprehensive pollen emissions model for use in weather and climate models and the impact of these emissions on regional precipitation.\u0026nbsp; I will also connect existing physical and chemical observations to determine when and where pollen may be important for atmospheric processes, and how it may change under future climate warming.\u003C\/div\u003E\r\n","summary":null,"format":"limited_html"}],"field_subtitle":"","field_summary":"","field_summary_sentence":[{"value":"A seminar by Dr. Allison Steiner, School of Earth and Atmospheric Sciences"}],"uid":"34458","created_gmt":"2019-08-08 17:28:07","changed_gmt":"2019-09-20 14:16:35","author":"nlawson3","boilerplate_text":"","field_publication":"","field_article_url":"","field_event_time":{"event_time_start":"2019-10-03T12:00:00-04:00","event_time_end":"2019-10-03T12:50:00-04:00","event_time_end_last":"2019-10-03T12:50:00-04:00","gmt_time_start":"2019-10-03 16:00:00","gmt_time_end":"2019-10-03 16:50:00","gmt_time_end_last":"2019-10-03 16:50:00","rrule":null,"timezone":"America\/New_York"},"extras":[],"hg_media":{"624179":{"id":"624179","type":"image","title":"Allison Steiner","body":null,"created":"1565284430","gmt_created":"2019-08-08 17:13:50","changed":"1565284430","gmt_changed":"2019-08-08 17:13:50","alt":"","file":{"fid":"237712","name":"A. Steiner.jpg","image_path":"\/sites\/default\/files\/images\/A.%20Steiner.jpg","image_full_path":"http:\/\/hg.gatech.edu\/\/sites\/default\/files\/images\/A.%20Steiner.jpg","mime":"image\/jpeg","size":53157,"path_740":"http:\/\/hg.gatech.edu\/sites\/default\/files\/styles\/740xx_scale\/public\/images\/A.%20Steiner.jpg?itok=9X1bvsHt"}}},"media_ids":["624179"],"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\u003ENatasha Lawson\u003C\/p\u003E\r\n","format":"limited_html"}],"email":[],"slides":[],"orientation":[],"userdata":""}}}