Aqua/AMSR-E L2 Ice Concentration 2008-04
type: Dataset
keyword: DIF10
keyword: EARTH SCIENCE
keyword: OCEANS
keyword: SEA ICE
keyword: EARTH SCIENCE>OCEANS
keyword: EARTH SCIENCE>CRYOSPHERE>SEA ICE
keyword: Aqua
keyword: AMSR-E
keyword: AQUA
spatial: Location
  bbox: POLYGON((-180 -90,-180 90,180 90,180 -90,-180 -90))
qualified relation: Self as JSON-LD (GeoDCAT-AP)
  type: Relationship
  relation: https://fedeo.ceos.org/series/eo:platform/AQUA/Aqua_AMSR-E_L2_IC/2008/04
  format: application/ld+json
  had role: http://www.iana.org/assignments/relation/self
qualified relation: Root as JSON-LD (GeoDCAT-AP)
  type: Relationship
  relation: https://fedeo.ceos.org
  format: application/ld+json
  had role: https://stacspec.org/def/rel/iana/1.0/root
qualified relation: Parent as JSON-LD (GeoDCAT-AP)
  type: Relationship
  relation: https://fedeo.ceos.org/series/eo:platform/AQUA/Aqua_AMSR-E_L2_IC/2008
  format: application/ld+json
  had role: https://stacspec.org/def/rel/iana/1.0/parent
qualified relation: Atom format
  type: Relationship
  relation: https://fedeo.ceos.org/collections/Aqua_AMSR-E_L2_IC
  format: application/atom+xml
  had role: http://www.iana.org/assignments/relation/alternate
qualified relation: Dublin Core metadata
  type: Relationship
  relation: https://fedeo.ceos.org/collections/Aqua_AMSR-E_L2_IC
  format: application/xml
  had role: http://www.iana.org/assignments/relation/alternate
qualified relation: JSON-LD (schema.org) metadata
  type: Relationship
  relation: https://fedeo.ceos.org/collections/Aqua_AMSR-E_L2_IC
  format: application/ld+json;profile="https://schema.org"
  had role: http://www.iana.org/assignments/relation/alternate
qualified relation: JSON-LD (GeoDCAT-AP) metadata
  type: Relationship
  relation: https://fedeo.ceos.org/collections/Aqua_AMSR-E_L2_IC
  format: application/ld+json;profile="http://data.europa.eu/930/"
  had role: http://www.iana.org/assignments/relation/alternate
qualified relation: RDF/XML metadata
  type: Relationship
  relation: https://fedeo.ceos.org/collections/Aqua_AMSR-E_L2_IC
  format: application/rdf+xml
  had role: http://www.iana.org/assignments/relation/alternate
qualified relation: RDF/XML (schema.org) metadata
  type: Relationship
  relation: https://fedeo.ceos.org/collections/Aqua_AMSR-E_L2_IC
  format: application/rdf+xml;profile="https://schema.org"
  had role: http://www.iana.org/assignments/relation/alternate
qualified relation: RDF/XML (GeoDCAT-AP) metadata
  type: Relationship
  relation: https://fedeo.ceos.org/collections/Aqua_AMSR-E_L2_IC
  format: application/rdf+xml;profile="http://data.europa.eu/930/"
  had role: http://www.iana.org/assignments/relation/alternate
qualified relation: Turtle metadata
  type: Relationship
  relation: https://fedeo.ceos.org/collections/Aqua_AMSR-E_L2_IC
  format: text/turtle
  had role: http://www.iana.org/assignments/relation/alternate
qualified relation: Turtle (schema.org) metadata
  type: Relationship
  relation: https://fedeo.ceos.org/collections/Aqua_AMSR-E_L2_IC
  format: text/turtle;profile="https://schema.org"
  had role: http://www.iana.org/assignments/relation/alternate
qualified relation: Turtle (GeoDCAT-AP) metadata
  type: Relationship
  relation: https://fedeo.ceos.org/collections/Aqua_AMSR-E_L2_IC
  format: text/turtle;profile="http://data.europa.eu/930/"
  had role: http://www.iana.org/assignments/relation/alternate
qualified relation: Landing Page in JSON media type.
  type: Relationship
  relation: https://fedeo.ceos.org
  format: application/json
  had role: http://www.iana.org/assignments/relation/alternate
description: Aqua/AMSR-E L2 Ice Concentration dataset is obtained from the AMSR-E sensor onboard Aqua and produced by the Japan Aerospace Exploration Agency (JAXA). Aqua of NASA was launched on May 4th, 2002 in Sun-synchronous sub-recurrent Orbit. Aqua observes various kinds of physical phenomena related to water and energy circulation from space. Aqua data promoted the research activities for interactions between the atmosphere, oceans and lands, and their effects on climate changes. AMSR-E scans the Earth's surface by mechanically rotating the antenna and acquires radiance data of the Earth's surface. Each frequency band is monitored by vertical and horizontal polarized wave. It conically scans and keeps an angle of incidence on the earth surface (a nominal of 55 degrees) and accomplishes a swath width of about 1450 km. The AMSR-E reached its limit to maintain the antenna rotation speed necessary for regular observations, and the AMSR-E restarted its observation in slow rotation mode (2 rotations per minute) on December 4, 2012. However, the AMSR-E reached its limit to maintain the antenna rotation speed necessary for slow rotation mode and it automatically halted its observation and rotation on December 4, 2015. Level 2 product stores the Geophysical quantity from the brightness temperature of level 1 product. This product includes Ice Concentration (IC). The technique uses data from the 6 GHz and 37 GHz channels at vertical polarization to obtain an initial estimate of sea ice concentration and ice temperature. The derived ice temperature is then utilized to estimate the emissivity for the corresponding observations at all the other channels. Ice concentrations are derived mainly from 37 GHz and 19 GHz channels, as in the Bootstrap technique, but makes use of emissivity instead of brightness temperatures to minimizes errors associated with spatial changes in sea ice temperatures. The ice temperature is in the end normalized using the derived ice concentration value, for it t…
qualified attribution: Attribution
  agent: Organization
    has name: JP/JAXA/SAOC
temporal: PeriodOfTime
  start date: 2008-04-01T00:00:00.000Z
  end date: 2008-04-30T23:59:59.999Z
license: other