{"id":2868,"date":"2024-09-15T05:28:00","date_gmt":"2024-09-15T05:28:00","guid":{"rendered":"https:\/\/www.nextias.com\/blog\/?p=2868"},"modified":"2024-09-19T13:06:30","modified_gmt":"2024-09-19T13:06:30","slug":"distribution-of-temperature","status":"publish","type":"post","link":"https:\/\/www.nextias.com\/blog\/distribution-of-temperature\/","title":{"rendered":"Distribution of Temperature and the Salinity in the Ocean"},"content":{"rendered":"\n<p><em>The Distribution of <a href=\"https:\/\/en.wikipedia.org\/wiki\/Temperature\" target=\"_blank\" rel=\"noopener\"><strong>Temperature<\/strong> <\/a>and salinity of oceans play crucial roles in various phenomena such as the <strong>vertical<\/strong> and <strong>horizontal<\/strong> circulation of ocean water, the movement of surface and <strong>subsurface currents<\/strong>, and the climate of different locations. <span style=\"color: initial;\">These <\/span><strong style=\"color: initial;\">factors<\/strong><span style=\"color: initial;\"> vary across the globe, resulting in diverse impacts on different regions.<\/span> This article aims to provide a comprehensive overview of distribution of temperature and salinity in the ocean.<\/em><\/p><div id=\"ez-toc-container\" class=\"ez-toc-v2_0_56_1 counter-hierarchy ez-toc-counter ez-toc-transparent ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<span class=\"ez-toc-title-toggle\"><\/span><\/div>\n<nav><ul class='ez-toc-list ez-toc-list-level-1 ' ><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/www.nextias.com\/blog\/distribution-of-temperature\/#Average_Temperature_of_Ocean_water\" title=\"Average Temperature of Ocean water\">Average Temperature of Ocean water<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/www.nextias.com\/blog\/distribution-of-temperature\/#Distribution_of_Temperature\" title=\"Distribution of Temperature&nbsp;\">Distribution of Temperature&nbsp;<\/a><ul class='ez-toc-list-level-3'><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/www.nextias.com\/blog\/distribution-of-temperature\/#How_is_temperature_distributed_throughout_the_ocean\" title=\"How is temperature distributed throughout the ocean?\">How is temperature distributed throughout the ocean?<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/www.nextias.com\/blog\/distribution-of-temperature\/#Factors_Affecting_the_Distribution_of_Temperature\" title=\"Factors Affecting the Distribution of Temperature\">Factors Affecting the Distribution of Temperature<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/www.nextias.com\/blog\/distribution-of-temperature\/#Horizontal_and_Vertical_Distribution_of_Temperature\" title=\"Horizontal and Vertical Distribution of Temperature\">Horizontal and Vertical Distribution of Temperature<\/a><ul class='ez-toc-list-level-3'><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/www.nextias.com\/blog\/distribution-of-temperature\/#Horizontal_Distribution_of_Temperature\" title=\"Horizontal Distribution of Temperature\">Horizontal Distribution of Temperature<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/www.nextias.com\/blog\/distribution-of-temperature\/#Vertical_Distribution_of_Temperature\" title=\"Vertical Distribution of Temperature\">Vertical Distribution of Temperature<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-8\" href=\"https:\/\/www.nextias.com\/blog\/distribution-of-temperature\/#The_General_Distribution_of_Salinity_in_the_Ocean\" title=\"The General Distribution of Salinity in the Ocean\">The General Distribution of Salinity in the Ocean<\/a><ul class='ez-toc-list-level-3'><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-9\" href=\"https:\/\/www.nextias.com\/blog\/distribution-of-temperature\/#Salinity_of_Ocean_Water\" title=\"Salinity of Ocean Water\">Salinity of Ocean Water<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-10\" href=\"https:\/\/www.nextias.com\/blog\/distribution-of-temperature\/#Factors_Affecting_Distribution_of_Salinity_of_Ocean_Water\" title=\"Factors Affecting Distribution of Salinity of Ocean Water\">Factors Affecting Distribution of Salinity of Ocean Water<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-11\" href=\"https:\/\/www.nextias.com\/blog\/distribution-of-temperature\/#Horizontal_Distribution_of_Salinity\" title=\"Horizontal Distribution of Salinity\">Horizontal Distribution of Salinity<\/a><ul class='ez-toc-list-level-3'><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-12\" href=\"https:\/\/www.nextias.com\/blog\/distribution-of-temperature\/#Higher_Salinity_Near_Tropic_of_Cancer_and_Tropic_of_Capricorn\" title=\"Higher Salinity Near Tropic of Cancer and Tropic of Capricorn\">Higher Salinity Near Tropic of Cancer and Tropic of Capricorn<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-13\" href=\"https:\/\/www.nextias.com\/blog\/distribution-of-temperature\/#Lower_Salinity_in_Equatorial_Regions\" title=\"Lower Salinity in Equatorial Regions\">Lower Salinity in Equatorial Regions<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-14\" href=\"https:\/\/www.nextias.com\/blog\/distribution-of-temperature\/#Lowest_Salinity_in_Poleward_Region\" title=\"Lowest Salinity in Poleward Region\">Lowest Salinity in Poleward Region<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-15\" href=\"https:\/\/www.nextias.com\/blog\/distribution-of-temperature\/#Vertical_Distribution_of_Salinity\" title=\"Vertical Distribution of Salinity\">Vertical Distribution of Salinity<\/a><ul class='ez-toc-list-level-3'><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-16\" href=\"https:\/\/www.nextias.com\/blog\/distribution-of-temperature\/#Salinity_Increases_with_Increasing_Depth\" title=\"Salinity Increases with Increasing Depth\">Salinity Increases with Increasing Depth<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-17\" href=\"https:\/\/www.nextias.com\/blog\/distribution-of-temperature\/#FAQ\" title=\"FAQ\">FAQ<\/a><ul class='ez-toc-list-level-3'><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-18\" href=\"https:\/\/www.nextias.com\/blog\/distribution-of-temperature\/#Why_are_there_Differences_in_the_Salinity_of_Oceans\" title=\"Why are there Differences in the Salinity of Oceans?\">Why are there Differences in the Salinity of Oceans?<\/a><\/li><\/ul><\/li><\/ul><\/nav><\/div>\n\n\n\n\n<h2 class=\"wp-block-heading has-text-color has-link-color wp-elements-12205fa06080746b59826b42de3d4bea\" style=\"color:#015aa7\"><span class=\"ez-toc-section\" id=\"Average_Temperature_of_Ocean_water\"><\/span><strong>Average Temperature of Ocean water<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li>The sea surface typically has an <strong>average temperature<\/strong> of approximately <strong>20\u00b0C (68\u00b0F),<\/strong> although it can vary depending on the location.&nbsp;<\/li>\n\n\n\n<li>In <strong>warm tropical regions<\/strong>, the temperature can <strong>exceed 30\u00b0C (86\u00b0F),<\/strong> while at high latitudes, it can <strong>drop below 0\u00b0C<\/strong>. Generally, as you go deeper into the ocean, the water becomes colder.<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading has-text-color has-link-color wp-elements-e304f1fb488d610850bfbe8d8271f874\" style=\"color:#015aa7\"><span class=\"ez-toc-section\" id=\"Distribution_of_Temperature\"><\/span><strong>Distribution of Temperature&nbsp;<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<h3 class=\"wp-block-heading has-text-color has-link-color wp-elements-f0a916dd193c1026ad18b96ff0446a2f\" style=\"color:#ff6a00\"><span class=\"ez-toc-section\" id=\"How_is_temperature_distributed_throughout_the_ocean\"><\/span><strong>How is temperature distributed throughout the ocean?<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>The <strong>temperature of the water<\/strong> in the ocean plays a crucial role for marine organisms such as <strong>phytoplankton<\/strong> and <strong>zooplankton.<\/strong>&nbsp;<\/li>\n\n\n\n<li>It also has an impact on the climate of coastal areas and the plants and animals that inhabit them.&nbsp;<\/li>\n\n\n\n<li><strong>Thermometers<\/strong> placed at different locations in the ocean are able to measure the temperature with an accuracy of approximately <strong>\u00b10.2\u00b0 C<\/strong>.&nbsp;<\/li>\n\n\n\n<li>In tropical regions, the ocean can be <strong>divided into three layers<\/strong> from the surface to the bottom.<\/li>\n<\/ul>\n\n\n\n<ol class=\"wp-block-list\">\n<li>The <strong>initial layer<\/strong> corresponds to <strong>the uppermost layer of warm ocean water<\/strong> and has a thickness of 500 meters. Its temperature ranges between 20\u00b0 and 25\u00b0C.&nbsp;<\/li>\n\n\n\n<li>The <strong>thermocline layer<\/strong> is a vertical zone of oceanic water located below the surface layer. It is distinguished by a significant decrease in temperature as depth increases.<\/li>\n\n\n\n<li>The <strong>third layer<\/strong> of the ocean is characterized by extreme coldness and it stretches all the way down to the ocean floor.&nbsp;<\/li>\n<\/ol>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter\"><img decoding=\"async\" src=\"https:\/\/lh7-us.googleusercontent.com\/OmakQ7OJGy8ztL2c-VmbSmxyN3U7qA3wbjRhBKEpy4M3GQZu6pk71GaD7VqBxTrbmsDX0apLDH7QvyuZhuKNv92OBIR8SGXm0gh7imkJ6hSH1chbJmweEVfO4595zQiY6tTTn2HtzG6kleKWjJyqJg\" alt=\"Temperature Distribution Throughout the Ocean\"\/><figcaption class=\"wp-element-caption\"><strong><em>Fig: Vertical distribution of the temperature<\/em><\/strong><\/figcaption><\/figure>\n<\/div>\n\n\n<h2 class=\"wp-block-heading has-text-color has-link-color wp-elements-ab1c0e87f46769eef8907c0dcb02ada6\" style=\"color:#015aa7\"><span class=\"ez-toc-section\" id=\"Factors_Affecting_the_Distribution_of_Temperature\"><\/span><strong>Factors Affecting the Distribution of Temperature<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li>The Sun is the primary contributor to the temperature of ocean water. It emits radiant energy, known as <strong>insolation<\/strong>, in the form of shortwave electromagnetic waves from its photosphere.&nbsp;<\/li>\n\n\n\n<li>This energy is <strong>received at the surface of the ocean<\/strong>. Additionally, some <strong>energy is received<\/strong> from below the <strong>ocean&#8217;s bottom<\/strong> and through the compression of seawater.<\/li>\n<\/ul>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-background\" style=\"background-color:#ebecf0\"><tbody><tr><td><strong>Latitudes<\/strong><\/td><td>&#8211; The temperature of surface water decreases as you move from the <strong>equator towards<\/strong> the poles. This is due to the <strong>Sun&#8217;s rays becoming more slanted,<\/strong> resulting in a <strong>decrease in the amount of sunlight reaching the water in polar regions<\/strong>.&nbsp;<br><br>&#8211; However, the poles in both hemispheres, the temperature of surface water becomes higher than the air temperature.<\/td><\/tr><tr><td><strong>Unequal Distribution of Land and Water<\/strong><\/td><td>&#8211; In the <strong>northern hemisphere<\/strong>, the oceans receive more heat because they come into contact with a larger <strong>amount of land compared to the oceans <\/strong>in the southern hemisphere.&nbsp;<br>&#8211; As a result, the surface water in the northern hemisphere tends to have a <strong>higher temperature<\/strong> than in the southern hemisphere.&nbsp;<br><br>&#8211; The isotherms in the <strong>northern hemisphere are irregular<\/strong> and do not follow latitudes due to the presence of both warm and cold land masses.&nbsp;<\/td><\/tr><tr><td><strong>Prevailing Wind<\/strong><\/td><td>&#8211; The <strong>distribution of ocean water temperature<\/strong> is significantly influenced by <strong>wind direction<\/strong>.&nbsp;<br><br>&#8211; When winds blow from the land towards the oceans and seas, they push warm surface water away from the coast, causing cold bottom water to rise up from below in a process called <strong>upwelling.<\/strong>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<br>(<strong>Note:<\/strong> Upwelling is also another factor)<br><br>&#8211; This leads to a <strong>longitudinal variation<\/strong> in temperature as <strong>warm water<\/strong> is replaced by cold water.&nbsp;<br><br>&#8211; In contrast, when <strong>onshore winds blow towards<\/strong> the coast, they <strong>cause warm water<\/strong> to accumulate near the coast, resulting <strong>in an increase<\/strong> in temperature.<\/td><\/tr><tr><td><a href=\"https:\/\/www.nextias.com\/blog\/ocean-currents\/\" data-type=\"link\" data-id=\"https:\/\/www.nextias.com\/blog\/ocean-currents\/\"><strong>Ocean Currents<\/strong><\/a><\/td><td>&#8211; Surface temperatures of the oceans are regulated by <strong>warm and cold ocean currents.&nbsp;<\/strong><br><br>&#8211; Warm currents increase the temperature in the regions they pass through, while cold currents decrease the temperature.&nbsp;<br><br>&#8211; For instance, the <strong>North Atlantic Current (warm)<\/strong> and&nbsp;(Labrador cold).<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<h2 class=\"wp-block-heading has-text-color has-link-color wp-elements-45362a2a3c4eacd02881c87a03d54daa\" style=\"color:#015aa7\"><span class=\"ez-toc-section\" id=\"Horizontal_and_Vertical_Distribution_of_Temperature\"><\/span><strong>Horizontal and Vertical Distribution of Temperature<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<h3 class=\"wp-block-heading has-text-color has-link-color wp-elements-568888bffe5238487171b5e3499885d7\" style=\"color:#ff6a00\"><span class=\"ez-toc-section\" id=\"Horizontal_Distribution_of_Temperature\"><\/span><strong>Horizontal Distribution of Temperature<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>On average, <strong>the surface water temperature<\/strong> of the oceans is 26. \u00b0C (80\u00b0F), gradually decreasing from the <strong>equator towards the poles<\/strong>.&nbsp;<\/li>\n\n\n\n<li>In the northern hemisphere, the <strong>oceans tend<\/strong> to have a higher average temperature compared to the southern hemisphere.&nbsp;<\/li>\n\n\n\n<li>This <strong>temperature variation between the hemispheres is due to the unequal distribution of land and ocean water.&nbsp;<\/strong><\/li>\n\n\n\n<li>The <strong>average annual temperature<\/strong> of the <strong>Pacific Ocean<\/strong> is slightly higher than that of the <strong>Atlantic Ocean<\/strong> (16. 1 \u00b0C or 60\u00b0F) and the <strong>Indian Ocean<\/strong> (17\u00b0C or 60. \u00b0F).&nbsp;<\/li>\n\n\n\n<li>Additionally, the surface water temperature of the oceans is higher than the air temperature above the ocean surface, indicating that the ocean surface releases heat to the <a href=\"https:\/\/www.nextias.com\/blog\/earths-atmosphere\/\" data-type=\"link\" data-id=\"https:\/\/www.nextias.com\/blog\/earths-atmosphere\/\"><strong>atmosphere<\/strong><\/a>.<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading has-text-color has-link-color wp-elements-2c98c967af509594248c349d401127ca\" style=\"color:#ff6a00\"><span class=\"ez-toc-section\" id=\"Vertical_Distribution_of_Temperature\"><\/span><strong><a href=\"https:\/\/www.nextias.com\/current-affairs\/26-04-2023\/understanding-temperature-anomalies\/\">Vertical Distribution of Temperature<\/a><\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>The <strong>maximum temperature<\/strong> of the oceans is consistently found at their surface because <strong>it directly absorbs sunlight<\/strong>, and the heat is then transferred to the deeper layers of the oceans through conduction.&nbsp;<\/li>\n\n\n\n<li>Sunlight is able to penetrate up to a <strong>depth of 20 meters<\/strong> in the ocean and rarely goes beyond 200 meters.&nbsp;<\/li>\n\n\n\n<li>The <strong>upper surface of the ocean<\/strong>, known as the <strong>Photic or Euphotic zone<\/strong>, extends up to a depth of 200 meters and is where <strong><a href=\"https:\/\/www.nextias.com\/blog\/solar-radiation\/\" data-type=\"link\" data-id=\"https:\/\/www.nextias.com\/blog\/solar-radiation\/\">solar radiation<\/a><\/strong> is received.<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading has-text-color has-link-color wp-elements-8e2eabec954569b9062a9bcee8cb85a1\" style=\"color:#015aa7\"><span class=\"ez-toc-section\" id=\"The_General_Distribution_of_Salinity_in_the_Ocean\"><\/span><strong>The General Distribution of Salinity in the Ocean<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<h3 class=\"wp-block-heading has-text-color has-link-color wp-elements-cbe3f6b4b28480dfe4b9317e71563658\" style=\"color:#ff6a00\"><span class=\"ez-toc-section\" id=\"Salinity_of_Ocean_Water\"><\/span><strong>Salinity of Ocean Water<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>The <strong>salinity of sea water<\/strong> refers to the overall weight of dissolved salts in one kilogram of sea water.&nbsp;<\/li>\n\n\n\n<li>Salinity is measured in <strong>units of g\/kg<\/strong>, often denoted as p.p.t. (Parts per thousand) or \u2030 (per mil).&nbsp;<\/li>\n\n\n\n<li>On average, <strong>sea water contains approximately 3\u00bd percent salt<\/strong>, meaning that every 1,000 grams of sea water contains nearly 35 grams of salt.&nbsp;<\/li>\n\n\n\n<li>Out of the <strong>total salt content<\/strong>, <strong>sea water<\/strong> consists of about 77 percent <strong>sodium chloride<\/strong> or <strong>common salt<\/strong>.<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading has-text-color has-link-color wp-elements-03360336f8e2991045fbe000d8795ef8\" style=\"color:#ff6a00\"><span class=\"ez-toc-section\" id=\"Factors_Affecting_Distribution_of_Salinity_of_Ocean_Water\"><\/span><strong>Factors Affecting Distribution of Salinity of Ocean Water<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-background\" style=\"background-color:#ebecf0\"><tbody><tr><td><strong>Evaporation<\/strong><\/td><td>&#8211; There is a <strong>direct correlation<\/strong> between the <strong>rate of evaporation<\/strong> and <strong>salinity<\/strong>.&nbsp;<br><br>&#8211; or, <strong>when evaporation is higher<\/strong>, <strong>salinity<\/strong> also tends to be <strong>higher<\/strong>, and <strong>vice versa<\/strong>.&nbsp;<br><br>&#8211; For instance, <strong>areas near the tropics<\/strong> have higher salinity compared <strong>to the equator due to the high rate of evaporation<\/strong> in these regions.&nbsp;<br><br>&#8211; This is particularly true when dry air is present over the tropics of Cancer and Capricorn.<\/td><\/tr><tr><td><strong>Precipitation<\/strong><\/td><td>&#8211; <strong>Precipitation<\/strong> and <strong>salinity<\/strong> have an inverse relationship.&nbsp;<br><br>&#8211; In other words, <strong>when precipitation is high, salinity is low, and vice versa.<\/strong>&nbsp;<br><br>&#8211; This is why <strong>areas with high rainfall<\/strong>, like the <strong>equatorial zone<\/strong>, tend to have lower salinity compared to <strong>regions with low rainfall<\/strong>, such as the <strong>sub-tropical high pressure belts<\/strong>.&nbsp;<\/td><\/tr><tr><td><strong>Influx of river water<\/strong><\/td><td>&#8211; The rivers transport salt from the land to the oceans. However, when <strong>large and voluminous rivers<\/strong> flow into the oceans, they bring a significant amount of water, which leads to a reduction in salinity at their mouths.&nbsp;<\/td><\/tr><tr><td><strong>Atmospheric Pressure and Wind Direction<\/strong><\/td><td>&#8211; The salinity of the ocean&#8217;s surface water rises under anticyclone conditions of <strong>stable air and high temperature<\/strong>.&nbsp;<br><br>&#8211; High pressure zones in the subtropics are examples of these circumstances.&nbsp;<br><br>&#8211; Winds also aid in the redistribution of salt in the <strong>oceans<\/strong> and <strong>by<\/strong> driving salty water to less salty places, which causes the former to become less salty and the latter to become saltier.<br><br>&#8211; These areas are known as <strong>upwelling regions<\/strong> because they see the replacement of saline surface water with substantially less saline subsurface water.<\/td><\/tr><tr><td><strong>Impact of Ocean Currents<\/strong><\/td><td>&#8211; Through the <strong>mixing of seawaters<\/strong>, <strong>ocean currents<\/strong> influence the regional distribution of salinity.&nbsp;<br><br>&#8211; Warm equatorial currents transport salt away from the continents&#8217; western coasts and collect it along their eastern coastlines.<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<h2 class=\"wp-block-heading has-text-color has-link-color wp-elements-5ea3838e703189b91f895d8c5b9db165\" style=\"color:#015aa7\"><span class=\"ez-toc-section\" id=\"Horizontal_Distribution_of_Salinity\"><\/span><strong>Horizontal Distribution of Salinity<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<h3 class=\"wp-block-heading has-text-color has-link-color wp-elements-ef5e0f58b8158c2a342170585796b67d\" style=\"color:#ff6a00\"><span class=\"ez-toc-section\" id=\"Higher_Salinity_Near_Tropic_of_Cancer_and_Tropic_of_Capricorn\"><\/span><strong>Higher Salinity Near Tropic of Cancer and Tropic of Capricorn<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>The temperature near the <strong>tropics of Cancer<\/strong> and <strong>Capricorn<\/strong> is very high. Here, <strong>evaporation is very high<\/strong> near the tropics because <strong>the sky is usually clear<\/strong> and the oceans are exposed to the onshore trade winds. This causes concentration of salts.<\/li>\n\n\n\n<li>Hence salinity of seas and oceans in these regions is very high.&nbsp;<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading has-text-color has-link-color wp-elements-2c35f95f335448cb8dd7aef65b16d899\" style=\"color:#ff6a00\"><span class=\"ez-toc-section\" id=\"Lower_Salinity_in_Equatorial_Regions\"><\/span><strong>Lower Salinity in Equatorial Regions<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>In the <strong>equatorial region<\/strong>, the salinity is comparatively low due to the <strong>higher amount of rainfall<\/strong>. And this region is impacted by <strong>various large rivers<\/strong> that bring <strong>fresh water<\/strong> into the ocean.&nbsp;<\/li>\n\n\n\n<li>Consequently, the combination of <strong>increased rainfall<\/strong>, higher relative humidity, cloud cover, and the influx of fresh water prevents significant evaporation, resulting in lower salinity levels.&nbsp;<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading has-text-color has-link-color wp-elements-35369d46ab6b0afabd1bbeadd4d97ee3\" style=\"color:#ff6a00\"><span class=\"ez-toc-section\" id=\"Lowest_Salinity_in_Poleward_Region\"><\/span><strong>Lowest Salinity in Poleward Region<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Towards pole the <strong>salinity decreases <\/strong>because of low evaporation and low temperature. In addition to this, the melting of ice provides the fresh water which leads to decrease the salinity in the polar region.&nbsp;<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading has-text-color has-link-color wp-elements-742c0b7e8aa9a66f32a37d8ec0c8cd3c\" style=\"color:#015aa7\"><span class=\"ez-toc-section\" id=\"Vertical_Distribution_of_Salinity\"><\/span><strong>Vertical Distribution of Salinity<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<h3 class=\"wp-block-heading has-text-color has-link-color wp-elements-2e5a89ba492a016898f3447a1a0ce8d9\" style=\"color:#ff6a00\"><span class=\"ez-toc-section\" id=\"Salinity_Increases_with_Increasing_Depth\"><\/span><strong>Salinity Increases with Increasing Depth<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Salinity tends to <strong>rise as the depth increases<\/strong> in high latitudes.&nbsp;<\/li>\n\n\n\n<li>However, in middle latitudes, this trend is limited to a <strong>depth of 200 fathoms<\/strong> from the surface, after which salinity decreases with increasing depth.&nbsp;<\/li>\n\n\n\n<li>At the equator, the <strong>surface salinity<\/strong> is <strong>low due to high rainfall<\/strong> and the movement of water through equatorial currents.&nbsp;<\/li>\n\n\n\n<li>However, beneath the surface, higher salinity levels are observed.&nbsp;<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading has-text-color has-link-color wp-elements-e63fad764f612a78a7fac166e8fc6c7e\" style=\"color:#015aa7\"><span class=\"ez-toc-section\" id=\"FAQ\"><\/span><strong>FAQ<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n<div id=\"rank-math-faq\" class=\"rank-math-block\">\n<div class=\"rank-math-list \">\n<div id=\"faq-question-1697795480794\" class=\"rank-math-list-item\">\n<h3 class=\"rank-math-question \"><span class=\"ez-toc-section\" id=\"Why_are_there_Differences_in_the_Salinity_of_Oceans\"><\/span><strong>Why are there Differences in the Salinity of Oceans?<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<div class=\"rank-math-answer \">\n\n<p><strong>Ans.<\/strong> The absorption of salt in <strong>seawater (salinity)<\/strong> varies with temperature, evaporation, and precipitation.<\/p>\n\n<\/div>\n<\/div>\n<\/div>\n<\/div>","protected":false},"excerpt":{"rendered":"<p>The Distribution of Temperature and salinity of oceans play crucial roles in various phenomena such as the vertical<\/p>\n","protected":false},"author":9,"featured_media":2872,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[67,833],"tags":[73],"class_list":["post-2868","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-geography","category-world-geography","tag-gs-1"],"_links":{"self":[{"href":"https:\/\/www.nextias.com\/blog\/wp-json\/wp\/v2\/posts\/2868","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.nextias.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.nextias.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.nextias.com\/blog\/wp-json\/wp\/v2\/users\/9"}],"replies":[{"embeddable":true,"href":"https:\/\/www.nextias.com\/blog\/wp-json\/wp\/v2\/comments?post=2868"}],"version-history":[{"count":12,"href":"https:\/\/www.nextias.com\/blog\/wp-json\/wp\/v2\/posts\/2868\/revisions"}],"predecessor-version":[{"id":11559,"href":"https:\/\/www.nextias.com\/blog\/wp-json\/wp\/v2\/posts\/2868\/revisions\/11559"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.nextias.com\/blog\/wp-json\/wp\/v2\/media\/2872"}],"wp:attachment":[{"href":"https:\/\/www.nextias.com\/blog\/wp-json\/wp\/v2\/media?parent=2868"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.nextias.com\/blog\/wp-json\/wp\/v2\/categories?post=2868"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.nextias.com\/blog\/wp-json\/wp\/v2\/tags?post=2868"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}