{"id":252,"date":"2022-09-02T06:08:42","date_gmt":"2022-09-02T06:08:42","guid":{"rendered":"https:\/\/hiilipuu-prod-22.atm.helsinki.fi\/hiilipuu\/?p=252"},"modified":"2022-09-02T06:08:43","modified_gmt":"2022-09-02T06:08:43","slug":"air-temperature","status":"publish","type":"post","link":"https:\/\/www.hiilipuu.fi\/index.php\/en\/2022\/09\/02\/air-temperature\/","title":{"rendered":"Air temperature"},"content":{"rendered":"\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-9d6595d7 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n<p>The diurnal and annual cycle in <a href=\"http:\/\/www.carbontree.fi\/articles\/solar-radiation\">solar radiation<\/a> is reflected into air temperature by the absorption of solar radiation.<\/p>\n\n\n\n<p><strong>The annual cycle<\/strong>&nbsp;in the radiation generates the annual cycle in temperature. The temperature reaches annual maximum and minimum about one month later than radiation. In the boreal region, <a href=\"http:\/\/www.carbontree.fi\/articles\/soil-temperature\">soil temperature<\/a> has a strong seasonal pattern that follows the air temperature.<\/p>\n\n\n\n<p><strong>The diurnal cycle&nbsp;<\/strong>in solar radiation is reflected into air temperature by the absorption of solar radiation. The cooling in the evening is a result of thermal radiation to space that predominates during cloudless moments without solar radiation.&nbsp; Therefore, rapid temperature increase and decrease is characteristic for sunny days.&nbsp; Clouds reduce radiation and consequently, the amplitude of temperature change is small.<\/p>\n\n\n\n<p>Ecological studies use a wide collection of temperature&nbsp;<strong>measurement<\/strong>&nbsp;technology. However, measuring temperature is difficult, especially with an uncertainty less than 0.1 \u00b0C. Radiation introduces larger systematic error than the sensor uncertainty in air measurement and therefore, the used sensor must be properly shielded from radiation. The temperature also changes in time and space (i.e. temporally and spatially, which can cause error). Go to <a href=\"http:\/\/www.hiilipuu.fi\/datavis\/gallery\">Observations<\/a> and view the air temperature measurements made at <a href=\"http:\/\/hiilipuu.fi\/articles\/measuring-station-smear-ii\">Hyyti\u00e4l\u00e4 Forestry Field Station.<\/a><\/p>\n<\/div>\n\n\n\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"1200\" height=\"677\" src=\"https:\/\/hiilipuu-prod-22.atm.helsinki.fi\/hiilipuu\/wp-content\/uploads\/2022\/09\/SmeII_JAalto_light01-1.jpg\" alt=\"\" class=\"wp-image-253\"\/><\/figure>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"1200\" height=\"800\" src=\"https:\/\/hiilipuu-prod-22.atm.helsinki.fi\/hiilipuu\/wp-content\/uploads\/2022\/09\/SmeII_JAalto_light03-1.jpg\" alt=\"\" class=\"wp-image-254\"\/><\/figure>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"402\" height=\"228\" src=\"https:\/\/hiilipuu-prod-22.atm.helsinki.fi\/hiilipuu\/wp-content\/uploads\/2022\/09\/Lampotila_vuosi_en.jpg\" alt=\"\" class=\"wp-image-255\"\/><\/figure>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"389\" height=\"236\" src=\"https:\/\/hiilipuu-prod-22.atm.helsinki.fi\/hiilipuu\/wp-content\/uploads\/2022\/09\/Lampotila_paiva_en.jpg\" alt=\"\" class=\"wp-image-256\"\/><\/figure>\n<\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>The diurnal and annual cycle in solar radiation is reflected into air temperature by the absorption of solar radiation. The annual cycle&nbsp;in the radiation generates the annual cycle in temperature. The temperature reaches annual maximum and minimum about one month later than radiation. In the boreal region, soil temperature has a strong seasonal pattern that&hellip;&nbsp;<a href=\"https:\/\/www.hiilipuu.fi\/index.php\/en\/2022\/09\/02\/air-temperature\/\" rel=\"bookmark\">Read More &raquo;<span class=\"screen-reader-text\">Air temperature<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"neve_meta_sidebar":"","neve_meta_container":"","neve_meta_enable_content_width":"","neve_meta_content_width":0,"neve_meta_title_alignment":"","neve_meta_author_avatar":"","neve_post_elements_order":"","neve_meta_disable_header":"","neve_meta_disable_footer":"","neve_meta_disable_title":"","footnotes":""},"categories":[29],"tags":[],"class_list":["post-252","post","type-post","status-publish","format-standard","hentry","category-articles"],"_links":{"self":[{"href":"https:\/\/www.hiilipuu.fi\/index.php\/wp-json\/wp\/v2\/posts\/252","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.hiilipuu.fi\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.hiilipuu.fi\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.hiilipuu.fi\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.hiilipuu.fi\/index.php\/wp-json\/wp\/v2\/comments?post=252"}],"version-history":[{"count":1,"href":"https:\/\/www.hiilipuu.fi\/index.php\/wp-json\/wp\/v2\/posts\/252\/revisions"}],"predecessor-version":[{"id":257,"href":"https:\/\/www.hiilipuu.fi\/index.php\/wp-json\/wp\/v2\/posts\/252\/revisions\/257"}],"wp:attachment":[{"href":"https:\/\/www.hiilipuu.fi\/index.php\/wp-json\/wp\/v2\/media?parent=252"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.hiilipuu.fi\/index.php\/wp-json\/wp\/v2\/categories?post=252"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.hiilipuu.fi\/index.php\/wp-json\/wp\/v2\/tags?post=252"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}