<html><head><meta http-equiv="Content-Type" content="text/html charset=utf-8"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space;" class=""><span style="color: rgb(34, 34, 34); font-family: arial, sans-serif; font-variant-ligatures: normal; orphans: 2; widows: 2; background-color: rgb(255, 255, 255);" class="">Geophysical Research Letters </span><div style="color: rgb(34, 34, 34); font-family: arial, sans-serif; font-variant-ligatures: normal; orphans: 2; widows: 2; background-color: rgb(255, 255, 255);" class=""><dt class="m_3695554386307082239feed-info__list-pub" style="color: rgb(66, 66, 66); font-family: 'Open Sans', Arial, Helvetica, 'Lucida Sans Unicode', sans-serif; margin: 0px 0.384615em 0px 0px; padding: 0px; border: 0px; outline: 0px; vertical-align: baseline; line-height: 1.5em; clear: both; display: inline; float: left; background-position: 0px 0px;">First Published:</dt><dd class="m_3695554386307082239feed-info__list-pub-data" style="color: rgb(66, 66, 66); font-family: 'Open Sans', Arial, Helvetica, 'Lucida Sans Unicode', sans-serif; margin: 0px; padding: 0px; border: 0px; outline: 0px; vertical-align: baseline; line-height: 1.5em; float: left; background-position: 0px 0px;"><time style="margin: 0px; padding: 0px; border: 0px; outline: 0px; vertical-align: baseline; background-position: 0px 0px;" class="">14 October 2017</time></dd><div class=""><br class=""></div></div><div style="color: rgb(34, 34, 34); font-variant-ligatures: normal; orphans: 2; widows: 2; background-color: rgb(255, 255, 255);" class=""><br class=""><div class=""><a href="http://onlinelibrary.wiley.com/doi/10.1002/2017GL075353/full" class="m_3695554386307082239fly-out-box m_3695554386307082239js-wm-module m_3695554386307082239uber-widget__article-title" target="_blank" data-saferedirecturl="https://www.google.com/url?hl=en&q=http://onlinelibrary.wiley.com/doi/10.1002/2017GL075353/full&source=gmail&ust=1508260405021000&usg=AFQjCNGN6srOpKDEZGuYysO4epbkGiZi5Q" style="font-size: 13px; font-family: 'Open Sans', Arial, Helvetica, 'Lucida Sans Unicode', sans-serif; color: rgb(46, 72, 114); margin: 0px; padding: 0px; vertical-align: baseline; font-weight: 700; text-decoration: none; font-variant-ligatures: normal; background-position: 0px 0px;"><h3 class="m_3695554386307082239article-feed m_3695554386307082239article-level-3" style="margin: 0px 0px 5px; padding: 0px; border: 0px; outline: 0px; font-size: 1.23077em; vertical-align: baseline; background: 0px 0px; color: inherit; line-height: 1.2em; clear: both;"><span class="m_3695554386307082239mainTitle" style="margin: 0px; padding: 0px; border: 0px; outline: 0px; font-size: 16px; vertical-align: baseline; background: 0px 0px;">Midlatitude Summer Drying: An Underestimated Threat in CMIP5 Models?</span></h3></a><span style="color: rgb(66, 66, 66); font-family: 'Open Sans', Arial, Helvetica, 'Lucida Sans Unicode', sans-serif; font-size: 13px; font-variant-ligatures: normal;" class=""></span><dl class="m_3695554386307082239feed-info__list" style="font-size: 13px; font-family: 'Open Sans', Arial, Helvetica, 'Lucida Sans Unicode', sans-serif; margin: 0px; padding: 0px; border: 0px; outline: 0px; vertical-align: baseline; overflow: hidden; color: rgb(66, 66, 66); font-variant-ligatures: normal; background-position: 0px 0px;"><dt class="m_3695554386307082239feed-info__list-authors" style="padding: 0px; border: 0px; outline: 0px; vertical-align: baseline; line-height: 1.5em; clear: both; display: inline; float: left; height: 1px; overflow: hidden; width: 1px; background-position: 0px 0px;">Authors</dt><dd class="m_3695554386307082239feed-info__list-authors-data" style="margin: 0px 0px 1.15385em; padding: 0px; border: 0px; outline: 0px; font-size: 1.07692em; vertical-align: baseline; background: 0px 0px; line-height: 1.5em; clear: both;">H. Douville, M. Plazzotta</dd></dl><section id="m_3695554386307082239abstract" class="m_3695554386307082239article-section m_3695554386307082239article-section--abstract" style="margin: 10px 0px 0px; padding: 0px; border: 0px; outline: 0px; vertical-align: baseline; color: rgb(66, 66, 66); font-variant-ligatures: normal; background-position: 0px 0px;"><div id="m_3695554386307082239en" class="m_3695554386307082239shortAbstract m_3695554386307082239article-section__content" lang="en" style="margin: 0px; padding: 1.15385em 0px 0px 1.53846em; border: 0px; outline: 0px; vertical-align: baseline; clear: both; background-position: 0px 0px;"><h2 class="m_3695554386307082239article-section__header" style="font-size: 0.923077em; font-family: 'Open Sans', Arial, Helvetica, 'Lucida Sans Unicode', sans-serif; margin: 0px; padding: 0px; border: 0px; outline: 0px; vertical-align: baseline; line-height: 1.2em; text-transform: uppercase; background-position: 0px 0px;">KEY POINTS</h2><ul id="m_3695554386307082239grl56515-list-0001" class="m_3695554386307082239u-list--bullet" style="margin: 0px 0px 0px 1.53846em; padding: 0px; border: 0px; outline: 0px; vertical-align: baseline; background-position: 0px 0px;"><li id="m_3695554386307082239grl56515-li-0001" style="margin: 0px; padding: 0px; border: 0px; outline: 0px; vertical-align: baseline; line-height: 1.5em; background-position: 0px 0px;" class="">Independent data sets are used to demonstrate the reality and anthropogenic origin of a recent multidecadal drying of the summer midlatitudes</li><li id="m_3695554386307082239grl56515-li-0001" style="margin: 0px; padding: 0px; border: 0px; outline: 0px; vertical-align: baseline; line-height: 1.5em; background-position: 0px 0px;" class=""><br class=""></li><li id="m_3695554386307082239grl56515-li-0002" style="margin: 0px; padding: 0px; border: 0px; outline: 0px; vertical-align: baseline; line-height: 1.5em; background-position: 0px 0px;" class="">In CMIP5 models the summer drying projected at the end of the 21st century shows a significant relationship with the recent drying</li><li id="m_3695554386307082239grl56515-li-0002" style="margin: 0px; padding: 0px; border: 0px; outline: 0px; vertical-align: baseline; line-height: 1.5em; background-position: 0px 0px;" class=""><br class=""></li><li id="m_3695554386307082239grl56515-li-0003" style="margin: 0px; padding: 0px; border: 0px; outline: 0px; vertical-align: baseline; line-height: 1.5em; background-position: 0px 0px;" class="">This emergent relationship is used to constrain the model response and suggests that most CMIP5 models underestimate the projected drying</li></ul></div></section><div class=""><section id="m_3695554386307082239abstract" class="m_3695554386307082239article-section m_3695554386307082239article-section--abstract" style="margin: 0px 5.5em 1em; padding: 0.7em 2em 1.7em; border: 0px; outline: 0px; vertical-align: baseline; background-color: rgb(249, 249, 249); clear: left; overflow: hidden; color: rgb(51, 51, 51); font-variant-ligatures: normal;"><div id="m_3695554386307082239en_main_abstract" class="m_3695554386307082239article-section__content m_3695554386307082239mainAbstract" lang="en" style="margin: 0px; padding: 0px; border: 0px; outline: 0px; vertical-align: baseline; background-position: 0px 0px;"><h2 class="m_3695554386307082239article-section__header" style="margin: 0px 0px 0.6em; padding: 0px; border: 0px; outline: 0px; vertical-align: baseline; color: rgb(65, 65, 65); font-weight: 400; line-height: 1.4; background-position: 0px 0px;"><span style="font-size: 14px;" class="">Abstract</span></h2><div style="margin: 0px; padding: 0px; border: 0px; outline: 0px; vertical-align: baseline; line-height: 1.5; background-position: 0px 0px;" class=""><a href="http://onlinelibrary.wiley.com/doi/10.1002/2017GL075353/abstract" target="_blank" data-saferedirecturl="https://www.google.com/url?hl=en&q=http://onlinelibrary.wiley.com/doi/10.1002/2017GL075353/abstract&source=gmail&ust=1508260405021000&usg=AFQjCNGaPB_XVR11em7uDqRAMbYIVHUR3g" style="color: rgb(17, 85, 204);" class="">http://onlinelibrary.wiley.<wbr class="">com/doi/10.1002/2017GL075353/<wbr class="">abstract</a></div><div style="margin: 0px; padding: 0px; border: 0px; outline: 0px; vertical-align: baseline; line-height: 1.5; background-position: 0px 0px;" class="">Early assessments of the hydrological impacts of global warming suggested both an intensification of the global water cycle and an expansion of dry areas. Yet these alarming conclusions were challenged by a number of latter studies emphasizing the lack of evidence in observations and historical simulations, as well as the large uncertainties in climate projections from the fifth phase of the Coupled Model Intercomparison Project (CMIP5). Here several aridity indices and a two-tier attribution strategy are used to demonstrate that a summer midlatitude drying has recently emerged over the northern continents, which is mainly attributable to anthropogenic climate change. This emerging signal is shown to be the harbinger of a long-term drying in the CMIP5 projections. Linear trends in the observed aridity indices can therefore be used as observational constraints and suggest that the projected midlatitude summer drying was underestimated by most CMIP5 models. Mitigating global warming therefore remains a priority to avoid dangerous impacts on global water and food security.</div></div></section></div></div></div><div class="">
<div style="color: rgb(0, 0, 0); font-family: Verdana; font-size: 14px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; orphans: auto; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: auto; word-spacing: 0px; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0px;">-------------------------------------------------------------------<br class=""><br class="">“Making connections is the essence of scientific progress.”<br class=""><br class="">Chris Quigg, “Aesthetic Science,”<br class=""><br class="">Scientific American, April 1999<br class=""><br class=""><br class=""></div>
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