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A New Monthly Series on the State of Sea Ice

Jack Hays

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This should supply some food for thought on a regular basis.

"Annually, the President is required to address the nation and report on the State of the Union. Other writers here regularly report on the oceans and El Nino/ENSO conditions, the duration and status of the extended “pause” in global warming we now are enjoying, and the global average satellite temperature anomalies. Thus, let us plan on summarizing, multiplying, dividing, and discussing the status of the world’s remaining sea ice on or about the twenty-second day of each month.

In particular, for the twenty-second of each month, we will calculate and present for discussion:

  • that day’s solar radiation level at top of atmosphere (TOA),
  • that day’s declination angle (the tilt of the earth’s axis towards or away from the solar plane),
  • that day’s average Antarctic and Arctic sea ice area and extents,
  • an estimate of the latitude of the edge of that day’s Antarctic and Arctic areas,
  • at the edge of the sea ice for that day, estimate the total reflected and absorbed solar radiation into open water and sea ice for a clear day. (This requires an estimate of the sea ice albedo for that day, the solar elevation of the sun for each hour of that day, an estimate of the open ocean water albedo each hour at each solar elevation angle, and an estimate of the atmosphere’s clarity that day, and the air mass attenuating the sun’s energy each hour of that day at that latitude. )
  • an estimate of the average additional heat losses each hour on that day from the open ocean and from the sea ice. . . . "



State of the Sea Ice – January 2015

Guest essay by Robert A Cook, PE Annually, the President is required to address the nation and report on the State of the Union. Other writers here regularly report on the oceans and El Nino/ENSO conditions, the duration and status of the extended “pause” in global warming we now are enjoying, and the global average…
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