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Eos" /> <meta property="og:description" content="In a new study, characteristics of elevated moist layers, their seasonality, spatial distribution, structure, and the coupling of mid-tropospheric circulation and convection are examined over the tropical Atlantic." /> <meta property="og:url" content="http://eos.org/editor-highlights/characteristics-of-moist-layers-over-the-tropical-atlantic" /> <meta property="og:site_name" content="Eos" /> <meta property="article:publisher" content="https://www.facebook.com/AmericanGeophysicalUnion" /> <meta property="article:published_time" content="2024-11-22T14:00:00+00:00" /> <meta property="article:modified_time" content="2024-11-20T16:31:22+00:00" /> <meta property="og:image" content="https://i0.wp.com/eos.org/wp-content/uploads/2024/11/2024GL108865-figure-2-final.png?fit=1200%2C675&ssl=1" /> <meta property="og:image:width" content="1200" /> <meta property="og:image:height" content="675" /> <meta property="og:image:type" content="image/png" /> <meta name="author" content="Suzana Camargo" /> <meta name="twitter:card" content="summary_large_image" /> <meta name="twitter:creator" content="@AGU_Eos" /> <meta name="twitter:site" content="@AGU_Eos" /> <meta name="twitter:label1" content="Written by" /> <meta name="twitter:data1" content="Suzana Camargo" /> <meta name="twitter:label2" content="Est. reading time" /> <meta name="twitter:data2" content="3 minutes" /> <script type="application/ld+json" class="yoast-schema-graph">{"@context":"https://schema.org","@graph":[{"@type":"Article","@id":"https://eos.org/editor-highlights/characteristics-of-moist-layers-over-the-tropical-atlantic#article","isPartOf":{"@id":"https://eos.org/editor-highlights/characteristics-of-moist-layers-over-the-tropical-atlantic"},"author":[{"@id":"https://eos.org/#/schema/person/image/f0101e7e8845e19949b785e0d057ad7e"}],"headline":"Characteristics of Moist Layers over the Tropical Atlantic","datePublished":"2024-11-22T14:00:00+00:00","dateModified":"2024-11-20T16:31:22+00:00","mainEntityOfPage":{"@id":"https://eos.org/editor-highlights/characteristics-of-moist-layers-over-the-tropical-atlantic"},"wordCount":252,"commentCount":0,"publisher":{"@id":"https://eos.org/#organization"},"image":{"@id":"https://eos.org/editor-highlights/characteristics-of-moist-layers-over-the-tropical-atlantic#primaryimage"},"thumbnailUrl":"https://i0.wp.com/eos.org/wp-content/uploads/2024/11/2024GL108865-figure-2-final.png?fit=1200%2C675&ssl=1","keywords":["Africa","Atlantic Ocean","clouds","everything atmospheric","Geophysical Research Letters","humidity","Oceans","tropics"],"articleSection":["Editors' Highlights"],"inLanguage":"en-US","potentialAction":[{"@type":"CommentAction","name":"Comment","target":["https://eos.org/editor-highlights/characteristics-of-moist-layers-over-the-tropical-atlantic#respond"]}]},{"@type":"WebPage","@id":"https://eos.org/editor-highlights/characteristics-of-moist-layers-over-the-tropical-atlantic","url":"https://eos.org/editor-highlights/characteristics-of-moist-layers-over-the-tropical-atlantic","name":"Characteristics of Moist Layers over the Tropical Atlantic - 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Gray contours indicate the ERA5 rain rate 75th and 95th percentiles. Panel (e) shows the annual evolution of EML total counts in different basins East Pacific (orange), Atlantic (blue) and West Pacific (green). Land areas were excluded and the EML occurrence was summed over areas of 60° latitude x 60°longitude. Credit: <a href="https://doi.org/10.1029/2024GL108865" target="_blank"> Prange et al. [2024]</a>, Figure 2</span></figcaption> </figure> <article id="post-230211" class="post-230211 post type-post status-publish format-standard has-post-thumbnail hentry category-editor-highlights tag-africa tag-atlantic-ocean tag-clouds tag-everything-atmospheric tag-geophysical-research-letters tag-humidity tag-oceans tag-tropics entry"> <div class="entry-content"> <h5 class="wp-block-heading has-white-color has-secondary-variation-background-color has-text-color has-background"><a href="https://eos.org/editor-highlights" target="_blank" rel="noreferrer noopener">Editors’ Highlights are summaries of recent papers by AGU’s journal editors.</a></h5> <h5 class="wp-block-heading">Source: <em><em>Geophysical Research Letters</em></em></h5> <p>Past observational studies in the tropics noticed the occurrence of a moist layer in the mid-troposphere near the melting level. These elevated moist layers (EML) are also present in cloud resolving simulations of convective aggregation. The EML presence has been associated with an overturning circulation above the boundary layer which helps to enhance convection.</p> <p><a href="https://doi.org/10.1029/2024GL108865" target="_blank" rel="noreferrer noopener">Prange et al. [2024]</a> provide a multi-year analysis of EML in reanalysis, including their seasonality, and characteristics in the rain belts of different ocean basins. In the case of the Atlantic, there is a very strong seasonal cycle, with a minimum occurrence of EML in the winter and maximum in the summer. Furthermore, the vertical structures of the EML also vary, with a more bottom-heavy circulation in July than in January. The EMLs occur both north and south of the Atlantic summer Intertropical Convergence Zone (ITCZ). The EMLs south of the ITCZ are embedded in the Hadley cell, coupled to the large-scale circulation and their source are mostly likely the deep convection within the ITCZ. In contrast, north of the Atlantic summer ITCZ, the EMLs typically form in the West African monsoon in an area with zonal wind shear.</p> <p><em>Citation: Prange, M., Stevens, B., & Buehler, S. A. (2024). Seasonal emergence and circulation coupling of moist layers over the tropical Atlantic. </em>Geophysical Research Letters<em>, 51, e2024GL108865. <a href="https://doi.org/10.1029/2024GL108865" target="_blank" rel="noreferrer noopener">https://doi.org/10.1029/2024GL108865</a></em></p> <p>—Suzana Camargo, Editor, <em>Geophysical Research Letters</em></p> <h6 class="wp-block-heading"><strong>Text © 2024. The authors. <a href="https://creativecommons.org/licenses/by-nc-nd/3.0/us/" target="_blank" rel="noreferrer noopener">CC BY-NC-ND 3.0</a></strong><br><strong>Except where otherwise noted, images are subject to copyright. 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