{"id":65,"date":"2018-01-26T12:30:18","date_gmt":"2018-01-26T12:30:18","guid":{"rendered":"http:\/\/www.oceanblogs.org\/pos519\/?p=65"},"modified":"2018-03-18T21:14:11","modified_gmt":"2018-03-18T21:14:11","slug":"reaching-the-research-area-first-test-ctd","status":"publish","type":"post","link":"https:\/\/www.oceanblogs.org\/pos519\/2018\/01\/26\/reaching-the-research-area-first-test-ctd\/","title":{"rendered":"Reaching the research area &#8211; first test CTD"},"content":{"rendered":"<p>In the early morning of the 23th of January 2018 the R\/V POEIDON left Las Palmas and sailed in the following two days to the coast of Mauritania. During the transit the scientists set up their labs, took initial test measurements and checked the functionality of all their equipment for the upcoming research.<\/p>\n<p>Using satellite data, Florian creates daily images showing the sea surface temperature off the coast of Mauretania. Using these up-to-the-minute data, the research team planned the location for the drifter&#8217;s deployment and the first measurement of the<a href=\"https:\/\/en.wikipedia.org\/wiki\/CTD_(instrument)\"> CTD (conductivity-temperature-depth sonde)<\/a>. This Thursday the R\/V Poseidon reached the study area. In the following hours, the research ship sailed along the coast. The scientists used surface measurements of temperature, N<sub>2<\/sub>O and CO<sub>2<\/sub> to identify an upwelling patch where the drifter can be deployed and tracked in the coming days.\u00a0 The coast of Mauritania is an area where, during this time of the year, upwelling occurs. This deep water is particularly rich in nutrients. In connection with the sun, the surface ocean in the upwelled area shows high biological productivity. This natural laboratory will be used by the researchers during this expedition to study the impact of biologically influenced surface layers on the gas exchange of climate relevant gases as CO<sub>2<\/sub> and N<sub>2<\/sub>O. Not only nutrients, but also gases such as CO<sub>2<\/sub> and N<sub>2<\/sub>O are transported to the surface with the upwelled water masses. Both gases will be released to the atmosphere by gas exchange, while CO<sub>2<\/sub> is also taken up by biological processes. Studying the fate of both gases together will result in estimates for the productivity of this area.<\/p>\n<div id=\"attachment_76\" style=\"width: 5770px\" class=\"wp-caption alignnone\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-76\" class=\"size-full wp-image-76\" src=\"http:\/\/www.oceanblogs.org\/pos519\/wp-content\/uploads\/sites\/56\/2018\/01\/LHoffmann_POS519-Probe-CTD-49.jpg\" alt=\"\" width=\"5760\" height=\"3840\" srcset=\"https:\/\/www.oceanblogs.org\/pos519\/wp-content\/uploads\/sites\/56\/2018\/01\/LHoffmann_POS519-Probe-CTD-49.jpg 5760w, https:\/\/www.oceanblogs.org\/pos519\/wp-content\/uploads\/sites\/56\/2018\/01\/LHoffmann_POS519-Probe-CTD-49-480x320.jpg 480w, https:\/\/www.oceanblogs.org\/pos519\/wp-content\/uploads\/sites\/56\/2018\/01\/LHoffmann_POS519-Probe-CTD-49-768x512.jpg 768w, https:\/\/www.oceanblogs.org\/pos519\/wp-content\/uploads\/sites\/56\/2018\/01\/LHoffmann_POS519-Probe-CTD-49-1024x683.jpg 1024w\" sizes=\"auto, (max-width: 5760px) 100vw, 5760px\" \/><p id=\"caption-attachment-76\" class=\"wp-caption-text\">The first CTD is launched. Die erste CTD wird zu Wasser gelassen. (Credit: Lisa Hoffmann, CC BY-NC-ND)<\/p><\/div>\n<p>&nbsp;<\/p>\n<p>In den Morgenstunden des 23. Januars 2018 legte die FS POSEIDON in Las Palmas ab und bewegte sich in den kommenden zwei Tagen gen S\u00fcden bis vor die K\u00fcste Mauretaniens. W\u00e4hrend der Zeit des Transits richteten sich die Forscher an Bord und in den Laboren ein, machten erste Testmessungen und \u00fcberpr\u00fcften all ihre Ger\u00e4te f\u00fcr die anstehenden Messungen.<\/p>\n<p>Florian erstellte jeden Tag mit Hilfe von Satelliten-Daten Bilder, die die Wassertemperatur vor der K\u00fcste Mauretaniens darstellen. Mit diesen tagesaktuellen Daten plante das Forschungsteam den Ort f\u00fcr das Aussetzen des Drifters und die erste Testmessung der <a href=\"https:\/\/de.wikipedia.org\/wiki\/CTD-Rosette\">CTD<\/a>. Am heutigen Donnerstag erreichte die F\/S POSEIDON das Forschungsgebiet. In den folgenden Stunden fuhr das Forschungsschiff entlang der K\u00fcste und es fanden Messungen von Oberfl\u00e4chentemperatur, CO2- und N2O-Gehalt statt, die Aufschluss geben sollten, wo sich ein frisches Auftriebspatch befindet, in den der Drifter ausgelegt und in den kommenden Tagen verfolgt werden kann.\u00a0 Vor der K\u00fcste Mauretaniens kommt es zu dieser Jahreszeit zu solchen Ereignissen, wo Tiefenwasser an die Oberfl\u00e4che kommt, welches besonders n\u00e4hrstoffreich ist. In Zusammenhang mit der Sonneneinstrahlung kommt es hier zu besonders hoher biologischer Produktivit\u00e4t. Dieses nat\u00fcrliche Labor soll in der kommenden Zeit von den Wissenschaftlern genutzt werden, um zu untersuchen welchen den Einfluss biologische Oberfl\u00e4chenfilme auf den Austausch von klimarelevanten Gasen wie CO2 und N2O haben. Denn mit dem Tiefenwasser kommen nicht nur N\u00e4hrstoffe, sondern auch Gase wie CO2 und N2O an die Oberfl\u00e4che. Durch die hohen Konzentrationen gasen beide Gase in die Atmosph\u00e4re, wobei CO2 noch zus\u00e4tzlich durch biologische Prozesse aufgenommen wird. Dies wollen sich die Forscher zunutze machen, um auch die Produktivit\u00e4t solcher Auftriebsgebiete zu bestimmen.<\/p>\n<div id=\"attachment_71\" style=\"width: 5770px\" class=\"wp-caption alignnone\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-71\" class=\"size-full wp-image-71\" src=\"http:\/\/www.oceanblogs.org\/pos519\/wp-content\/uploads\/sites\/56\/2018\/01\/LHoffmann_POS519-Probe-CTD-39.jpg\" alt=\"\" width=\"5760\" height=\"3840\" srcset=\"https:\/\/www.oceanblogs.org\/pos519\/wp-content\/uploads\/sites\/56\/2018\/01\/LHoffmann_POS519-Probe-CTD-39.jpg 5760w, https:\/\/www.oceanblogs.org\/pos519\/wp-content\/uploads\/sites\/56\/2018\/01\/LHoffmann_POS519-Probe-CTD-39-480x320.jpg 480w, https:\/\/www.oceanblogs.org\/pos519\/wp-content\/uploads\/sites\/56\/2018\/01\/LHoffmann_POS519-Probe-CTD-39-768x512.jpg 768w, https:\/\/www.oceanblogs.org\/pos519\/wp-content\/uploads\/sites\/56\/2018\/01\/LHoffmann_POS519-Probe-CTD-39-1024x683.jpg 1024w\" sizes=\"auto, (max-width: 5760px) 100vw, 5760px\" \/><p id=\"caption-attachment-71\" class=\"wp-caption-text\">Ludwig takes water samples of different depths to measure the concentration of O2. Ludwig nimmt Wasserproben aus verschiedenen Tiefen zur Bestimmung des Sauerstoffgehalts. (Credit: Lisa Hoffmann, CC BY-NC-ND)<\/p><\/div>\n<p>&nbsp;<\/p>\n<!-- Rendered by FancyBox without labels BEGIN -->\n\n\t<style type=\"text\/css\">\n\t\t\t\t\t#gallery-0 {\n\t\t\t\t\t\tmargin: auto;\n\t\t\t\t\t}\n\t\t\t\t\t#gallery-0 .gallery-item {\n\t\t\t\t\t\tfloat: left;\n\t\t\t\t\t\tmargin-top: 10px;\n\t\t\t\t\t\ttext-align: center;\n\t\t\t\t\t\twidth: 14%;\n\t\t\t\t\t}\n\t\t\t\t\t#gallery-0 img {\n\t\t\t\t\t\tborder: 2px solid #cfcfcf;\n\t\t\t\t\t}\n\t\t\t\t\t#gallery-0 .gallery-caption {\n\t\t\t\t\t\tmargin-left: 0;\n\t\t\t\t\t}\n\t<\/style>\n<script type=\"text\/javascript\">\n$(document).ready(function() {\n\t\/*\n\t *  Simple image gallery. Uses default settings\n\t *\/\n\n\t$(\".fancybox\").fancybox({\n\t\t\"transitionIn\"\t\t: \"none\",\n\t\t\"transitionOut\"\t\t: \"none\",\n\t\t\"titlePosition\" \t: \"over\"\n\n\t});\n});\n<\/script>\n\n\t<div id=\"gallery-0\" class=\"gallery galleryid-0 gallery-size-thumbnail\" style=\"\"><dl class=\"gallery-item\"><dt class=\"gallery-icon\">\n\t\t<a class=\"fancybox\" href=\"https:\/\/www.oceanblogs.org\/pos519\/wp-content\/uploads\/sites\/56\/2018\/01\/20180123-LHoffmann_POS519_72-1024x683.jpg\" rel=\"gallery-0\"><img loading=\"lazy\" decoding=\"async\" width=\"135\" height=\"135\" class=\"attachment-thumbnail\" alt=\"Leaving the port of Las Palmas. Verlassen des Hafens von Las Palmas. (Credit: Lisa Hoffmann, CC BY-NC-ND)\" src=\"https:\/\/www.oceanblogs.org\/pos519\/wp-content\/uploads\/sites\/56\/2018\/01\/20180123-LHoffmann_POS519_72-135x135.jpg\" \/><\/a><\/dt><\/dl>\n\n<dl class=\"gallery-item\"><dt class=\"gallery-icon\">\n\t\t<a class=\"fancybox\" href=\"https:\/\/www.oceanblogs.org\/pos519\/wp-content\/uploads\/sites\/56\/2018\/01\/LHoffmann_POS519-Suche-Patch-2-1024x683.jpg\" rel=\"gallery-0\"><img loading=\"lazy\" decoding=\"async\" width=\"135\" height=\"135\" class=\"attachment-thumbnail\" alt=\"Discussion about potential upwelling-patches in the mess room. Besprechung zu m\u00f6glichen Auftriebsgebieten am Abend in der Messe. (Credit: Lisa Hoffmann, CC BY-NC-ND)\" src=\"https:\/\/www.oceanblogs.org\/pos519\/wp-content\/uploads\/sites\/56\/2018\/01\/LHoffmann_POS519-Suche-Patch-2-135x135.jpg\" \/><\/a><\/dt><\/dl>\n\n<dl class=\"gallery-item\"><dt class=\"gallery-icon\">\n\t\t<a class=\"fancybox\" href=\"https:\/\/www.oceanblogs.org\/pos519\/wp-content\/uploads\/sites\/56\/2018\/01\/LHoffmann_POS519-Probe-CTD-5-1024x683.jpg\" rel=\"gallery-0\"><img loading=\"lazy\" decoding=\"async\" width=\"135\" height=\"135\" class=\"attachment-thumbnail\" alt=\"Damian creates tables for upcoming measurements and graphics of current measurements. Damian erstellt Tabellen f\u00fcr die anstehenden Messung und Grafiken bereits stattfindender Messungen. (Credit: Lisa Hoffmann, CC BY-NC-ND)\" src=\"https:\/\/www.oceanblogs.org\/pos519\/wp-content\/uploads\/sites\/56\/2018\/01\/LHoffmann_POS519-Probe-CTD-5-135x135.jpg\" \/><\/a><\/dt><\/dl>\n\n<dl class=\"gallery-item\"><dt class=\"gallery-icon\">\n\t\t<a class=\"fancybox\" href=\"https:\/\/www.oceanblogs.org\/pos519\/wp-content\/uploads\/sites\/56\/2018\/01\/LHoffmann_POS519-Probe-CTD-24-1024x683.jpg\" rel=\"gallery-0\"><img loading=\"lazy\" decoding=\"async\" width=\"135\" height=\"135\" class=\"attachment-thumbnail\" alt=\"Rudi explains the measurements of the CTD and decides with the others where to take water samples. Rudi erkl\u00e4rt die CTD und entscheidet gemeinsam mit den anderen, in welchen Tiefen Wasserproben genommen werden. (Credit: Lisa Hoffmann, CC BY-NC-ND)\" src=\"https:\/\/www.oceanblogs.org\/pos519\/wp-content\/uploads\/sites\/56\/2018\/01\/LHoffmann_POS519-Probe-CTD-24-135x135.jpg\" \/><\/a><\/dt><\/dl>\n\n<dl class=\"gallery-item\"><dt class=\"gallery-icon\">\n\t\t<a class=\"fancybox\" href=\"https:\/\/www.oceanblogs.org\/pos519\/wp-content\/uploads\/sites\/56\/2018\/01\/LHoffmann_POS519-Probe-CTD-28-1024x683.jpg\" rel=\"gallery-0\"><img loading=\"lazy\" decoding=\"async\" width=\"135\" height=\"135\" class=\"attachment-thumbnail\" alt=\"Rudi is communicating with the brigde. Rudi kommuniziert mit der Br\u00fccke \u00fcber den Bordfunk. (Credit: Lisa Hoffmann, CC BY-NC-ND)\" src=\"https:\/\/www.oceanblogs.org\/pos519\/wp-content\/uploads\/sites\/56\/2018\/01\/LHoffmann_POS519-Probe-CTD-28-135x135.jpg\" \/><\/a><\/dt><\/dl>\n\n<dl class=\"gallery-item\"><dt class=\"gallery-icon\">\n\t\t<a class=\"fancybox\" href=\"https:\/\/www.oceanblogs.org\/pos519\/wp-content\/uploads\/sites\/56\/2018\/01\/LHoffmann_POS519-Probe-CTD-38-1024x683.jpg\" rel=\"gallery-0\"><img loading=\"lazy\" decoding=\"async\" width=\"135\" height=\"135\" class=\"attachment-thumbnail\" alt=\"Credit: Lisa Hoffmann, CC BY-NC-ND\" src=\"https:\/\/www.oceanblogs.org\/pos519\/wp-content\/uploads\/sites\/56\/2018\/01\/LHoffmann_POS519-Probe-CTD-38-135x135.jpg\" \/><\/a><\/dt><\/dl>\n\n<dl class=\"gallery-item\"><dt class=\"gallery-icon\">\n\t\t<a class=\"fancybox\" href=\"https:\/\/www.oceanblogs.org\/pos519\/wp-content\/uploads\/sites\/56\/2018\/01\/LHoffmann_POS519-Probe-CTD-47-1024x683.jpg\" rel=\"gallery-0\"><img loading=\"lazy\" decoding=\"async\" width=\"135\" height=\"135\" class=\"attachment-thumbnail\" alt=\"Theresa samples the water of the first CTD. Theresa untersucht das Wasser der  ersten CTD. (Credit: Lisa Hoffmann, CC BY-NC-ND)\" src=\"https:\/\/www.oceanblogs.org\/pos519\/wp-content\/uploads\/sites\/56\/2018\/01\/LHoffmann_POS519-Probe-CTD-47-135x135.jpg\" \/><\/a><\/dt><\/dl>\n\n<\/div><br clear=\"all\" \/><!-- Rendered by FancyBox without labels END -->\n\n<p>Text: Lisa Hoffmann<\/p>\n","protected":false},"excerpt":{"rendered":"<p>In the early morning of the 23th of January 2018 the R\/V POEIDON left Las Palmas and sailed in the following two days to the coast of Mauritania. During the transit the scientists set up their labs, took initial test measurements and checked the functionality of all their equipment for the upcoming research. Using satellite [&hellip;]<\/p>\n","protected":false},"author":191,"featured_media":73,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[3,5],"tags":[],"class_list":["post-65","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-ocean-and-climate","category-ocean-observation"],"_links":{"self":[{"href":"https:\/\/www.oceanblogs.org\/pos519\/wp-json\/wp\/v2\/posts\/65","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.oceanblogs.org\/pos519\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.oceanblogs.org\/pos519\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.oceanblogs.org\/pos519\/wp-json\/wp\/v2\/users\/191"}],"replies":[{"embeddable":true,"href":"https:\/\/www.oceanblogs.org\/pos519\/wp-json\/wp\/v2\/comments?post=65"}],"version-history":[{"count":11,"href":"https:\/\/www.oceanblogs.org\/pos519\/wp-json\/wp\/v2\/posts\/65\/revisions"}],"predecessor-version":[{"id":202,"href":"https:\/\/www.oceanblogs.org\/pos519\/wp-json\/wp\/v2\/posts\/65\/revisions\/202"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.oceanblogs.org\/pos519\/wp-json\/wp\/v2\/media\/73"}],"wp:attachment":[{"href":"https:\/\/www.oceanblogs.org\/pos519\/wp-json\/wp\/v2\/media?parent=65"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.oceanblogs.org\/pos519\/wp-json\/wp\/v2\/categories?post=65"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.oceanblogs.org\/pos519\/wp-json\/wp\/v2\/tags?post=65"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}