{"id":745,"date":"2017-04-19T22:33:22","date_gmt":"2017-04-19T22:33:22","guid":{"rendered":"https:\/\/courses.lumenlearning.com\/geophysical\/?post_type=chapter&#038;p=745"},"modified":"2017-04-26T17:51:01","modified_gmt":"2017-04-26T17:51:01","slug":"significance-of-the-atmosphere","status":"publish","type":"chapter","link":"https:\/\/courses.lumenlearning.com\/suny-geophysical\/chapter\/significance-of-the-atmosphere\/","title":{"raw":"Significance of the Atmosphere","rendered":"Significance of the Atmosphere"},"content":{"raw":"<img class=\"alignright wp-image-766\" src=\"https:\/\/s3-us-west-2.amazonaws.com\/courses-images\/wp-content\/uploads\/sites\/250\/2017\/04\/25214642\/2017-03-21-17-29-01.jpg\" alt=\"Sunlight filtering through the clouds in the sky over an empty field. \" width=\"400\" height=\"263\" \/>Earth\u2019s atmosphere is a thin blanket of gases and tiny particles: together called air. We are most aware of air when it moves and creates wind. All living things need some of the gases in air for life support. Without an atmosphere, Earth would likely be just another lifeless rock. Earth's atmosphere, along with the abundant liquid water at Earth's surface, are the keys to our planet's unique place in the solar system. Much of what makes Earth exceptional depends on the atmosphere. Let's consider some of the reasons we are lucky to have an atmosphere.\r\n<h2>Indispensable for Life of Earth<\/h2>\r\nWithout the atmosphere, Earth would look a lot more like the Moon. Atmospheric gases, especially carbon dioxide (CO<sub>2<\/sub>) and oxygen (O<sub>2<\/sub>), are extremely important for living organisms. How does the atmosphere make life possible? How does life alter the atmosphere?\r\n\r\nIn <strong>photosynthesis<\/strong> plants use CO<sub>2<\/sub> and create O<sub>2<\/sub>. Photosynthesis is responsible for nearly all of the oxygen currently found in the atmosphere.\u00a0By creating oxygen and food, plants have made an environment that is favorable for animals. In respiration, animals use oxygen to convert sugar into food energy they can use. Plants also go through respiration and consume some of the sugars they produce.\r\n<h2>Crucial Part of the Water Cycle<\/h2>\r\n<img class=\"alignright wp-image-767\" src=\"https:\/\/s3-us-west-2.amazonaws.com\/courses-images\/wp-content\/uploads\/sites\/250\/2017\/04\/25215223\/Rocky-Sky-Nature-Landscape-Sea-Clouds-Beach-2127654.jpg\" alt=\"Clouds over a rocky beach and the ocean\" width=\"400\" height=\"267\" \/>As part of the <a title=\"\" href=\"http:\/\/forecast.weather.gov\/jetstream\/atmos\/hydro.htm\" target=\"_blank\">hydrologic cycle<\/a>, which was detailed in the Earth's Fresh Water chapter, water spends a lot of time in the atmosphere, mostly as water vapor.All <strong>weather<\/strong> takes place in the atmosphere, virtually all of it in the lower atmosphere. Weather describes what the atmosphere is like at a specific time and place, and may include temperature, wind, and precipitation. Weather is the change we experience from day to day. Climate is the long-term average of weather in a particular spot. Although the weather for a particular winter day in Tucson, Arizona, may include snow, the climate of Tucson is generally warm and dry.\r\n<h2>Ozone Layer Makes Life Possible<\/h2>\r\n<img class=\"alignright\" src=\"https:\/\/s3-us-west-2.amazonaws.com\/courses-images-archive-read-only\/wp-content\/uploads\/sites\/567\/2015\/05\/21153010\/820313758.jpg\" alt=\"The hole in the ozone is larger than the continent of Antarctica. \" width=\"250\" height=\"250\" \/><strong>Ozone<\/strong> is a molecule composed of three oxygen atoms, (O3). Ozone in the upper atmosphere absorbs high-energy <strong>ultraviolet (UV) radiation<\/strong> coming from the Sun. This protects living things on Earth\u2019s surface from the Sun\u2019s most harmful rays. Without ozone for protection, only the simplest life forms would be able to live on Earth.\r\n<h2>Moderates Earth's Temperature<\/h2>\r\nAlong with the oceans, the <strong>atmosphere<\/strong> keeps Earth's temperatures within an acceptable range. <strong>Greenhouse gases<\/strong> trap heat in the atmosphere so they help to moderate global temperatures. Without an atmosphere with greenhouse gases, Earth's temperatures would be frigid at night and scorching during the day. Important greenhouse gases include carbon dioxide, methane, water vapor, and ozone.","rendered":"<p><img loading=\"lazy\" decoding=\"async\" class=\"alignright wp-image-766\" src=\"https:\/\/s3-us-west-2.amazonaws.com\/courses-images\/wp-content\/uploads\/sites\/250\/2017\/04\/25214642\/2017-03-21-17-29-01.jpg\" alt=\"Sunlight filtering through the clouds in the sky over an empty field.\" width=\"400\" height=\"263\" \/>Earth\u2019s atmosphere is a thin blanket of gases and tiny particles: together called air. We are most aware of air when it moves and creates wind. All living things need some of the gases in air for life support. Without an atmosphere, Earth would likely be just another lifeless rock. Earth&#8217;s atmosphere, along with the abundant liquid water at Earth&#8217;s surface, are the keys to our planet&#8217;s unique place in the solar system. Much of what makes Earth exceptional depends on the atmosphere. Let&#8217;s consider some of the reasons we are lucky to have an atmosphere.<\/p>\n<h2>Indispensable for Life of Earth<\/h2>\n<p>Without the atmosphere, Earth would look a lot more like the Moon. Atmospheric gases, especially carbon dioxide (CO<sub>2<\/sub>) and oxygen (O<sub>2<\/sub>), are extremely important for living organisms. How does the atmosphere make life possible? How does life alter the atmosphere?<\/p>\n<p>In <strong>photosynthesis<\/strong> plants use CO<sub>2<\/sub> and create O<sub>2<\/sub>. Photosynthesis is responsible for nearly all of the oxygen currently found in the atmosphere.\u00a0By creating oxygen and food, plants have made an environment that is favorable for animals. In respiration, animals use oxygen to convert sugar into food energy they can use. Plants also go through respiration and consume some of the sugars they produce.<\/p>\n<h2>Crucial Part of the Water Cycle<\/h2>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignright wp-image-767\" src=\"https:\/\/s3-us-west-2.amazonaws.com\/courses-images\/wp-content\/uploads\/sites\/250\/2017\/04\/25215223\/Rocky-Sky-Nature-Landscape-Sea-Clouds-Beach-2127654.jpg\" alt=\"Clouds over a rocky beach and the ocean\" width=\"400\" height=\"267\" \/>As part of the <a title=\"\" href=\"http:\/\/forecast.weather.gov\/jetstream\/atmos\/hydro.htm\" target=\"_blank\">hydrologic cycle<\/a>, which was detailed in the Earth&#8217;s Fresh Water chapter, water spends a lot of time in the atmosphere, mostly as water vapor.All <strong>weather<\/strong> takes place in the atmosphere, virtually all of it in the lower atmosphere. Weather describes what the atmosphere is like at a specific time and place, and may include temperature, wind, and precipitation. Weather is the change we experience from day to day. Climate is the long-term average of weather in a particular spot. Although the weather for a particular winter day in Tucson, Arizona, may include snow, the climate of Tucson is generally warm and dry.<\/p>\n<h2>Ozone Layer Makes Life Possible<\/h2>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignright\" src=\"https:\/\/s3-us-west-2.amazonaws.com\/courses-images-archive-read-only\/wp-content\/uploads\/sites\/567\/2015\/05\/21153010\/820313758.jpg\" alt=\"The hole in the ozone is larger than the continent of Antarctica.\" width=\"250\" height=\"250\" \/><strong>Ozone<\/strong> is a molecule composed of three oxygen atoms, (O3). Ozone in the upper atmosphere absorbs high-energy <strong>ultraviolet (UV) radiation<\/strong> coming from the Sun. This protects living things on Earth\u2019s surface from the Sun\u2019s most harmful rays. Without ozone for protection, only the simplest life forms would be able to live on Earth.<\/p>\n<h2>Moderates Earth&#8217;s Temperature<\/h2>\n<p>Along with the oceans, the <strong>atmosphere<\/strong> keeps Earth&#8217;s temperatures within an acceptable range. <strong>Greenhouse gases<\/strong> trap heat in the atmosphere so they help to moderate global temperatures. Without an atmosphere with greenhouse gases, Earth&#8217;s temperatures would be frigid at night and scorching during the day. Important greenhouse gases include carbon dioxide, methane, water vapor, and ozone.<\/p>\n\n\t\t\t <section class=\"citations-section\" role=\"contentinfo\">\n\t\t\t <h3>Candela Citations<\/h3>\n\t\t\t\t\t <div>\n\t\t\t\t\t\t <div id=\"citation-list-745\">\n\t\t\t\t\t\t\t <div class=\"licensing\"><div class=\"license-attribution-dropdown-subheading\">CC licensed content, Shared previously<\/div><ul class=\"citation-list\"><li>Dynamic Earth: Introduction to Physical Geography. <strong>Authored by<\/strong>: R. Adam Dastrup. <strong>Located at<\/strong>: <a target=\"_blank\" href=\"http:\/\/www.opengeography.org\/physical-geography.html\">http:\/\/www.opengeography.org\/physical-geography.html<\/a>. <strong>Project<\/strong>: Open Geography Education. <strong>License<\/strong>: <em><a target=\"_blank\" rel=\"license\" href=\"https:\/\/creativecommons.org\/licenses\/by-sa\/4.0\/\">CC BY-SA: Attribution-ShareAlike<\/a><\/em><\/li><li>sky, trees, field. <strong>Authored by<\/strong>: Benjamin Balazs. <strong>Located at<\/strong>: <a target=\"_blank\" href=\"https:\/\/pixnio.com\/nature-landscapes\/field\/village-sky-trees-field-grass-clouds-nature\">https:\/\/pixnio.com\/nature-landscapes\/field\/village-sky-trees-field-grass-clouds-nature<\/a>. <strong>License<\/strong>: <em><a target=\"_blank\" rel=\"license\" href=\"https:\/\/creativecommons.org\/about\/cc0\">CC0: No Rights Reserved<\/a><\/em><\/li><li>Rocky Sky Nature Landscape Sea Clouds Beach. <strong>Provided by<\/strong>: Max Pixel. <strong>Located at<\/strong>: <a target=\"_blank\" href=\"http:\/\/maxpixel.freegreatpicture.com\/Rocky-Sky-Nature-Landscape-Sea-Clouds-Beach-2127654\">http:\/\/maxpixel.freegreatpicture.com\/Rocky-Sky-Nature-Landscape-Sea-Clouds-Beach-2127654<\/a>. <strong>License<\/strong>: <em><a target=\"_blank\" rel=\"license\" href=\"https:\/\/creativecommons.org\/about\/cc0\">CC0: No Rights Reserved<\/a><\/em><\/li><\/ul><div class=\"license-attribution-dropdown-subheading\">Public domain content<\/div><ul class=\"citation-list\"><li>Ozone. <strong>Provided by<\/strong>: NASA. <strong>Located at<\/strong>: <a target=\"_blank\" href=\"https:\/\/www.nasa.gov\/vision\/earth\/lookingatearth\/ozone_record.html\">https:\/\/www.nasa.gov\/vision\/earth\/lookingatearth\/ozone_record.html<\/a>. <strong>License<\/strong>: <em><a target=\"_blank\" rel=\"license\" href=\"https:\/\/creativecommons.org\/about\/pdm\">Public Domain: No Known Copyright<\/a><\/em><\/li><\/ul><\/div>\n\t\t\t\t\t\t <\/div>\n\t\t\t\t\t <\/div>\n\t\t\t <\/section>","protected":false},"author":17,"menu_order":2,"template":"","meta":{"_candela_citation":"[{\"type\":\"cc\",\"description\":\"Dynamic Earth: Introduction to Physical Geography\",\"author\":\"R. Adam Dastrup\",\"organization\":\"\",\"url\":\"http:\/\/www.opengeography.org\/physical-geography.html\",\"project\":\"Open Geography Education\",\"license\":\"cc-by-sa\",\"license_terms\":\"\"},{\"type\":\"cc\",\"description\":\"sky, trees, field\",\"author\":\"Benjamin Balazs\",\"organization\":\"\",\"url\":\"https:\/\/pixnio.com\/nature-landscapes\/field\/village-sky-trees-field-grass-clouds-nature\",\"project\":\"\",\"license\":\"cc0\",\"license_terms\":\"\"},{\"type\":\"cc\",\"description\":\"Rocky Sky Nature Landscape Sea Clouds Beach\",\"author\":\"\",\"organization\":\"Max Pixel\",\"url\":\"http:\/\/maxpixel.freegreatpicture.com\/Rocky-Sky-Nature-Landscape-Sea-Clouds-Beach-2127654\",\"project\":\"\",\"license\":\"cc0\",\"license_terms\":\"\"},{\"type\":\"pd\",\"description\":\"Ozone\",\"author\":\"\",\"organization\":\"NASA\",\"url\":\"https:\/\/www.nasa.gov\/vision\/earth\/lookingatearth\/ozone_record.html\",\"project\":\"\",\"license\":\"pd\",\"license_terms\":\"\"}]","CANDELA_OUTCOMES_GUID":"","pb_show_title":"on","pb_short_title":"","pb_subtitle":"","pb_authors":[],"pb_section_license":""},"chapter-type":[],"contributor":[],"license":[],"class_list":["post-745","chapter","type-chapter","status-publish","hentry"],"part":594,"_links":{"self":[{"href":"https:\/\/courses.lumenlearning.com\/suny-geophysical\/wp-json\/pressbooks\/v2\/chapters\/745","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/courses.lumenlearning.com\/suny-geophysical\/wp-json\/pressbooks\/v2\/chapters"}],"about":[{"href":"https:\/\/courses.lumenlearning.com\/suny-geophysical\/wp-json\/wp\/v2\/types\/chapter"}],"author":[{"embeddable":true,"href":"https:\/\/courses.lumenlearning.com\/suny-geophysical\/wp-json\/wp\/v2\/users\/17"}],"version-history":[{"count":4,"href":"https:\/\/courses.lumenlearning.com\/suny-geophysical\/wp-json\/pressbooks\/v2\/chapters\/745\/revisions"}],"predecessor-version":[{"id":769,"href":"https:\/\/courses.lumenlearning.com\/suny-geophysical\/wp-json\/pressbooks\/v2\/chapters\/745\/revisions\/769"}],"part":[{"href":"https:\/\/courses.lumenlearning.com\/suny-geophysical\/wp-json\/pressbooks\/v2\/parts\/594"}],"metadata":[{"href":"https:\/\/courses.lumenlearning.com\/suny-geophysical\/wp-json\/pressbooks\/v2\/chapters\/745\/metadata\/"}],"wp:attachment":[{"href":"https:\/\/courses.lumenlearning.com\/suny-geophysical\/wp-json\/wp\/v2\/media?parent=745"}],"wp:term":[{"taxonomy":"chapter-type","embeddable":true,"href":"https:\/\/courses.lumenlearning.com\/suny-geophysical\/wp-json\/pressbooks\/v2\/chapter-type?post=745"},{"taxonomy":"contributor","embeddable":true,"href":"https:\/\/courses.lumenlearning.com\/suny-geophysical\/wp-json\/wp\/v2\/contributor?post=745"},{"taxonomy":"license","embeddable":true,"href":"https:\/\/courses.lumenlearning.com\/suny-geophysical\/wp-json\/wp\/v2\/license?post=745"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}