{"id":472,"date":"2021-04-07T22:56:37","date_gmt":"2021-04-07T22:56:37","guid":{"rendered":"http:\/\/sites.rutgers.edu\/kyle-mattingly\/?page_id=472"},"modified":"2021-04-13T20:24:49","modified_gmt":"2021-04-13T20:24:49","slug":"precipitation-extremes","status":"publish","type":"page","link":"https:\/\/sites.rutgers.edu\/kyle-mattingly\/research\/precipitation-extremes\/","title":{"rendered":"Precipitation extremes"},"content":{"rendered":"<h3>Extreme precipitation return periods<\/h3>\n<p>Extreme precipitation events affect numerous aspects of society and are increasing in many areas as the climate warms. The design of many hydrologic infrastructure projects is based on \u201cdesign values\u201d of precipitation, which estimate the maximum amount of precipitation that can be expected for a given recurrence interval (e.g. 50 years). These design values are typically derived from precipitation measurements at widely scattered, long-term observing sites. Using a densely-spaced network of citizen science observations in the Colorado Front Range region from the Community Collaborative Rain, Hail and Snow (CoCoRaHS) Network, my colleagues and I derived updated design values representative of a metropolitan <em>area<\/em> rather than a single point. Our area-based design values were larger than point-based values for shorter recurrence intervals but smaller for longer recurrence intervals, likely due to the relatively short duration of the CoCoRaHS record. Future work will revisit these results and expand to other metropolitan areas as the length and number of CoCoRaHS records grows.<\/p>\n<figure id=\"attachment_515\" aria-describedby=\"caption-attachment-515\" style=\"width: 615px\" class=\"wp-caption aligncenter\"><a href=\"http:\/\/sites.rutgers.edu\/kyle-mattingly\/wp-content\/uploads\/sites\/656\/2021\/04\/M17_fig_1.png\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-515\" src=\"http:\/\/sites.rutgers.edu\/kyle-mattingly\/wp-content\/uploads\/sites\/656\/2021\/04\/M17_fig_1.png\" alt=\"CoCoRaHS station map\" width=\"615\" height=\"701\" srcset=\"https:\/\/sites.rutgers.edu\/kyle-mattingly\/wp-content\/uploads\/sites\/656\/2021\/04\/M17_fig_1.png 804w, https:\/\/sites.rutgers.edu\/kyle-mattingly\/wp-content\/uploads\/sites\/656\/2021\/04\/M17_fig_1-263x300.png 263w, https:\/\/sites.rutgers.edu\/kyle-mattingly\/wp-content\/uploads\/sites\/656\/2021\/04\/M17_fig_1-768x875.png 768w\" sizes=\"(max-width: 615px) 100vw, 615px\" \/><\/a><figcaption id=\"caption-attachment-515\" class=\"wp-caption-text\">Locations of Community Collaborative Rain, Hail, and Snow (CoCoRaHS) stations in the continental US (A), Colorado Front Range region (B), and Fort Collins, CO area (C).<br \/>From <a href=\"https:\/\/www.tandfonline.com\/doi\/abs\/10.1080\/24694452.2017.1309961?journalCode=raag21\">Mattingly et al. 2017<\/a>, <em>Annals of the American Association of Geographers<\/em>. Copyright \u00a9 2017 American Association of Geographers, reprinted by permission of Informa UK Limited, trading as Taylor &amp; Francis Group, www.tandfonline.com on behalf of American Association of Geographers<\/figcaption><\/figure>\n<p>&nbsp;<\/p>\n<figure id=\"attachment_514\" aria-describedby=\"caption-attachment-514\" style=\"width: 680px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-514\" src=\"http:\/\/sites.rutgers.edu\/kyle-mattingly\/wp-content\/uploads\/sites\/656\/2021\/04\/M17_fig_7.png\" alt=\"NWS vs CoCoRaHS design values\" width=\"680\" height=\"530\" srcset=\"https:\/\/sites.rutgers.edu\/kyle-mattingly\/wp-content\/uploads\/sites\/656\/2021\/04\/M17_fig_7.png 916w, https:\/\/sites.rutgers.edu\/kyle-mattingly\/wp-content\/uploads\/sites\/656\/2021\/04\/M17_fig_7-300x234.png 300w, https:\/\/sites.rutgers.edu\/kyle-mattingly\/wp-content\/uploads\/sites\/656\/2021\/04\/M17_fig_7-768x599.png 768w\" sizes=\"(max-width: 680px) 100vw, 680px\" \/><figcaption id=\"caption-attachment-514\" class=\"wp-caption-text\">Comparison of National Weather Service design values with values derived using dense CoCoRaHS rain gauge network in Fort Collins.<br \/>\nFrom <a href=\"https:\/\/www.tandfonline.com\/doi\/abs\/10.1080\/24694452.2017.1309961?journalCode=raag21\">Mattingly et al. 2017<\/a>, <em>Annals of the American Association of Geographers<\/em>. Copyright \u00a9 2017 American Association of Geographers, reprinted by permission of Informa UK Limited, trading as Taylor &amp; Francis Group, www.tandfonline.com on behalf of American Association of Geographers<\/figcaption><\/figure>\n<h4>Read more:<\/h4>\n<ul>\n<li><a href=\"https:\/\/www.tandfonline.com\/doi\/abs\/10.1080\/24694452.2017.1309961?journalCode=raag21\">Mattingly et al., 2017<\/a> (<em>Annals of the American Association of Geographers<\/em>): Estimates of extreme precipitation frequency in urban areas derived from spatially dense rain gauge observations: A case study of two urban areas in the Colorado Front Range region<\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>Extreme precipitation return periods Extreme precipitation events affect numerous aspects of society and are increasing in many areas as the climate warms. The design of many hydrologic infrastructure projects is &hellip; <a href=\"https:\/\/sites.rutgers.edu\/kyle-mattingly\/research\/precipitation-extremes\/\" class=\"\">Read More<\/a><\/p>\n","protected":false},"author":1641,"featured_media":0,"parent":365,"menu_order":3,"comment_status":"closed","ping_status":"closed","template":"template-custom.php","meta":{"_acf_changed":false,"footnotes":""},"class_list":["post-472","page","type-page","status-publish","hentry"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v23.5 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Precipitation extremes - Kyle Mattingly<\/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:\/\/sites.rutgers.edu\/kyle-mattingly\/research\/precipitation-extremes\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Precipitation extremes - Kyle Mattingly\" \/>\n<meta property=\"og:description\" content=\"Extreme precipitation return periods Extreme precipitation events affect numerous aspects of society and are increasing in many areas as the climate warms. 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