{ "count": 5, "next": null, "previous": null, "results": [ { "id": 4715, "url": "https://svs.gsfc.nasa.gov/4715/", "result_type": "Visualization", "release_date": "2019-06-07T00:00:00-04:00", "title": "Swedish Solar Telescope: Solar Closeups", "description": "Close-up of Active Region 12593 through the 400 nm filter of the Swedish Solar Telescope. SDO/HMI provides the background image. || Sept2016_CHROMIS4000A_stand.HD1080i.00100_print.jpg (1024x576) [200.8 KB] || Sept2016_CHROMIS4000A_stand.HD1080i.00100_searchweb.png (180x320) [136.4 KB] || Sept2016_CHROMIS4000A_stand.HD1080i.00100_thm.png (80x40) [9.1 KB] || SwedishST (1920x1080) [0 Item(s)] || Sept2016_CHROMIS4000A.HD1080i_p30.mp4 (1920x1080) [19.4 MB] || Sept2016_CHROMIS4000A.HD1080i_p30.webm (1920x1080) [1.5 MB] || SwedishST (3840x2160) [0 Item(s)] || Sept2016_CHROMIS4000A.UHD3840_2160p30.mp4 (3840x2160) [50.6 MB] || Sept2016_CHROMIS4000A.HD1080i_p30.mp4.hwshow [199 bytes] || ", "hits": 126 }, { "id": 4061, "url": "https://svs.gsfc.nasa.gov/4061/", "result_type": "Visualization", "release_date": "2013-04-16T00:00:00-04:00", "title": "Solar Close-ups with Hinode's Solar Optical Telescope", "description": "A collection of movies generated from the Solar Optical Telescope (SOT) of the JAXA/NASA Hinode mission. || ", "hits": 41 }, { "id": 20085, "url": "https://svs.gsfc.nasa.gov/20085/", "result_type": "Animation", "release_date": "2006-10-04T00:00:00-04:00", "title": "Ocean Convection at High Altitudes - Normal Condition", "description": "Understanding the variability of the density of ocean water is critical to understanding changes in the ocean's circulation, particularly those parts of the circulation that pertain to climate. In the tropics, the sun warms the surface water and causes that water to expand. Because the surface water is now less dense than the cooler water below, the warmest waters remain near the surface. Near the poles, the energy input by the sun is not as strong, and the surface waters are not warmed to the degree they are away from the poles. Here, it is the salinity of the water plays a critical role as to which water is found at the surface as the waters near the surface are not that much different in temperature to the water below. These animations highlight the crucial role of salinity in high latitude convection (upward and downward movement of water) and climate.This animation, labeled Normal, is a display of the way convection might often occur at high latitudes. Here the water initially is assumed to be almost constant in temperature and salinity from top to bottom. At the times when the air immediately above is colder than the water, there is a transfer of heat from the water to the atmosphere. The surface waters cool, condense, become more dense and ultimately sink. Because the cooling can be very intense at high latitudes, the surface water can cool enough to sink to the bottom. Note in this animation that the convection is depicted to occur in a narrow, almost chimney like area. This is very much the way nature and deep convection behaves at high latitudes. Note later in this animation, the coldest water has made its way to the bottom and it appears the water is moving from right to left near the bottom. This depiction is meant to indicate a movement toward the tropics at these depths. || ", "hits": 221 }, { "id": 20086, "url": "https://svs.gsfc.nasa.gov/20086/", "result_type": "Animation", "release_date": "2006-10-04T00:00:00-04:00", "title": "Ocean Convection at High Altitudes - Fresh Condition", "description": "Understanding the variability of the density of ocean water is critical to understanding changes in the ocean's circulation, particularly those parts of the circulation that pertain to climate. In the tropics, the sun warms the surface water and causes that water to expand. Because the surface water is now less dense than the cooler water below, the warmest waters remain near the surface. Near the poles, the energy input by the sun is not as strong, and the surface waters are not warmed to the degree they are away from the poles. Here, it is the salinity of the water plays a critical role as to which water is found at the surface as the waters near the surface are not that much different in temperature to the water below. These animations highlight the crucial role of salinity in high latitude convection (upward and downward movement of water) and climate.This animation, labeled Fresh, illustrates the condition where the water near the surface is assumed to be much fresher than the saltier water below. Now when a atmosphere cools the surface water, the water sinks, but it does not make it all the way to the bottom. The scenario displayed is one where the condensing effect of the cooling is not strong enough to overcome the effects that salinity has on the density of the water. The less saline the water, the less dense it is. A cold fresh layer of water is constrained near the surface. Sometimes, this layer can even freeze insulating the water from any further cooling by the atmosphere. Note that in this animation there is very little movement of the water at depth back toward the tropics. || ", "hits": 116 }, { "id": 20003, "url": "https://svs.gsfc.nasa.gov/20003/", "result_type": "Animation", "release_date": "2003-11-05T12:00:00-05:00", "title": "Soot Effects Rainfall", "description": "Heating Up the Atmosphere (Animation) - When soot absorbs sunlight, it heats the air and reduces the amount of sunlight reaching the ground, cooling the Earth's surface. The heated air makes the atmosphere unstable, creating rising air (convection) that forms clouds and brings rainfall to regions that are heavily polluted.The increase of rising air is balanced by an increase in sinking air (subsidence) and drying. When air sinks, clouds and thus rain, cannot form creating dry conditions. Soot or black carbon is the product of low temperature burning. It is generated from industrial pollution, traffic, outdoor fires and household burning of coal and biomass fuels. || ", "hits": 50 } ] }