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- Q7076134 subject Q8791517.
- Q7076134 abstract "The "color" of the ocean is determined by the interactions of incident light with substances or particles present in the water. White light from the sun is made up of a combination of colors, which are broken apart by water droplets in a ‘rainbow’ spectrum. Large quantities of water, even in a swimming pool, would appear blue as well. When light hits the water surface, the different colors are absorbed, transmitted, scattered, or reflected in differing intensities by water molecules and other so-called optically-active constituents in suspension in the upper layer of the ocean. The reason open ocean waters often appear blue is due to the absorption and scattering of light. The blue wavelengths of light are scattered, similar to the scattering of blue light in the sky but absorption is a much larger factor than scattering for the clear ocean water. In water, absorption is strong in the red and weak in the blue, thus red light is absorbed quickly in the ocean leaving blue. Almost all sunlight that enters the ocean is absorbed, except very close to the coast. The red, yellow, and green wavelengths of sunlight are absorbed by water molecules in the ocean. When sunlight hits the ocean, some of the light is reflected back directly but most of it penetrates the ocean surface and interacts with the water molecules that it encounters. The red, orange, yellow, and green wavelengths of light are absorbed so that the remaining light we see is composed of the shorter wavelength blues and violets.If there are any particles suspended in the water, they will increase the scattering of light. In coastal areas, runoff from rivers, resuspension of sand and silt from the bottom by tides, waves and storms and a number of other substances can change the color of the near-shore waters. Some types of particles can also contain substances that absorb certain wavelengths of light, which alters its characteristics. For example, microscopic marine algae, called phytoplankton, have the capacity to absorb light in the blue and red region of the spectrum owing to specific pigments like chlorophyll. Accordingly, as the concentration of phytoplankton increases in the water, the color of the water shifts toward the green part of the spectrum. Fine mineral particles like sediment absorb light in the blue part of the spectrum, causing the water to turn brownish in case of massive sediment load.The most important light-absorbing substance in the oceans is chlorophyll, which phytoplankton use to produce carbon by photosynthesis. Due to this green pigment — chlorophyll — phytoplankton preferentially absorb the red and blue portions of the light spectrum and reflect green light. Ocean regions with high concentrations of phytoplankton will have shades of blue-green depending upon the type and density of the phytoplankton population there. The basic principle behind the remote sensing of ocean color from space is that the more phytoplankton is in the water, the greener it is.There are other substances that may be found dissolved in the water that can also absorb light. Since these substances are usually composed of organic carbon, researchers generally refer to these substances as colored dissolved organic matter.".
- Q7076134 thumbnail Bahamas_MODIS.jpg?width=300.
- Q7076134 wikiPageExternalLink index_e.html.
- Q7076134 wikiPageExternalLink cw_dataprod_color.html.
- Q7076134 wikiPageExternalLink oceancolor.gsfc.nasa.gov.
- Q7076134 wikiPageExternalLink oceancolour.jrc.ec.europa.eu.
- Q7076134 wikiPageExternalLink myoceancolor.
- Q7076134 wikiPageExternalLink www.chlorogin.org.
- Q7076134 wikiPageExternalLink cindex.html.
- Q7076134 wikiPageExternalLink crs.
- Q7076134 wikiPageExternalLink www.earthobservations.org.
- Q7076134 wikiPageExternalLink SEMH7W2VQUD_planet_0.html.
- Q7076134 wikiPageExternalLink www.globcolour.info.
- Q7076134 wikiPageExternalLink www.ioccg.org.
- Q7076134 wikiPageExternalLink irsp4.htm.
- Q7076134 wikiPageExternalLink eng.
- Q7076134 wikiPageExternalLink gcos.
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- Q7076134 wikiPageWikiLink Q6715420.
- Q7076134 wikiPageWikiLink Q6764191.
- Q7076134 wikiPageWikiLink Q676840.
- Q7076134 wikiPageWikiLink Q7119940.
- Q7076134 wikiPageWikiLink Q8791517.
- Q7076134 wikiPageWikiLink Q986090.
- Q7076134 comment "The "color" of the ocean is determined by the interactions of incident light with substances or particles present in the water. White light from the sun is made up of a combination of colors, which are broken apart by water droplets in a ‘rainbow’ spectrum. Large quantities of water, even in a swimming pool, would appear blue as well.".
- Q7076134 label "Ocean color".
- Q7076134 depiction Bahamas_MODIS.jpg.