Comments on: Despite cooler weather, Arctic ice retreat just misses last year’s mark http://climateprogress.org/2008/09/17/despite-cooler-weather-arctic-ice-retreat-just-misses-last-year%e2%80%99s-mark/ The Latest on Climate Science, Solutions, and Politics Sun, 22 Nov 2009 01:47:45 -0500 http://wordpress.org/?v=2.8.5 hourly 1 By: shop http://climateprogress.org/2008/09/17/despite-cooler-weather-arctic-ice-retreat-just-misses-last-year%e2%80%99s-mark/#comment-27324 shop Fri, 16 Jan 2009 13:19:56 +0000 http://climateprogress.org/2008/09/17/despite-cooler-weather-arctic-ice-retreat-just-misses-last-year%e2%80%99s-mark/#comment-27324 We mention this now because the natural variability of the climate system has frequently been known to trick human efforts at forecasting the future. It is still possible that ice extent could fall again, slightly, because of either further melting or a contraction in the area of the pack due to the motion of the ice. However, we have now seen five days of gains in extent. Because of the variability of sea ice at this time of year, the National Snow and Ice Data Center determines the minimum using a five-day running mean value. We mention this now because the natural variability of the climate system has frequently been known to trick human efforts at forecasting the future. It is still possible that ice extent could fall again, slightly, because of either further melting or a contraction in the area of the pack due to the motion of the ice. However, we have now seen five days of gains in extent. Because of the variability of sea ice at this time of year, the National Snow and Ice Data Center determines the minimum using a five-day running mean value.

]]> By: Unrelated http://climateprogress.org/2008/09/17/despite-cooler-weather-arctic-ice-retreat-just-misses-last-year%e2%80%99s-mark/#comment-19466 Unrelated Tue, 23 Sep 2008 06:14:29 +0000 http://climateprogress.org/2008/09/17/despite-cooler-weather-arctic-ice-retreat-just-misses-last-year%e2%80%99s-mark/#comment-19466 Global temperatures and sea ice retreat are unrelated. Arctic sea ice depends more on water temperatures and currents as well as cloudiness in that area. If you look at the records, neither in 1998 nor in 1999, with strong El Niño and La Niña each, showed arctic meltdowns substantially different from the years before, although global temperature variations were very big in both directions. Global temperatures and sea ice retreat are unrelated. Arctic sea ice depends more on water temperatures and currents as well as cloudiness in that area. If you look at the records, neither in 1998 nor in 1999, with strong El Niño and La Niña each, showed arctic meltdowns substantially different from the years before, although global temperature variations were very big in both directions.

]]> By: jorleh http://climateprogress.org/2008/09/17/despite-cooler-weather-arctic-ice-retreat-just-misses-last-year%e2%80%99s-mark/#comment-19252 jorleh Thu, 18 Sep 2008 04:05:08 +0000 http://climateprogress.org/2008/09/17/despite-cooler-weather-arctic-ice-retreat-just-misses-last-year%e2%80%99s-mark/#comment-19252 I wonder the blindness of people as to clear facts: like Revkin, almost-many-perhaps-let´s see mentality. We are deep there in the soup and wondering where we are. I wonder the blindness of people as to clear facts: like Revkin, almost-many-perhaps-let´s see mentality.

We are deep there in the soup and wondering where we are.

]]> By: paulm http://climateprogress.org/2008/09/17/despite-cooler-weather-arctic-ice-retreat-just-misses-last-year%e2%80%99s-mark/#comment-19250 paulm Thu, 18 Sep 2008 00:20:14 +0000 http://climateprogress.org/2008/09/17/despite-cooler-weather-arctic-ice-retreat-just-misses-last-year%e2%80%99s-mark/#comment-19250 This article is interesting. http://www.jamaica-gleaner.com/gleaner/20080330/focus/focus6.html evidenced in Jamaica and elsewhere by physical coastal features stranded inland, such as wave-cut notches and elevated coral reefs. Interestingly, there are similar features at about the two-metre mark above present-daysea level. We are definitely going to get around a 2m rise at some point in the near future! Basically the coastal cliffs in Jamaica record the various levels at which the sea level stabilized for an extended period. The waves were able to cut notches in to the cliffs during that time. It gives us a good indication of where levels will stabilize as different ice sheet melt. This is probably due to the climate settling in a particular state with respect to temperature. There is lots of evidence out there which suggests that rapid mluti-meter SLR does occur: High rates of sea-level rise during the last interglacial period http://www.nature.com/ngeo/journal/v1/n1/full/ngeo.2007.28.html This is the scary one from down under.... Coral reef clue to fast sea rise http://www.guardian.co.uk/world/2005/feb/24/australia.environment Remember these scientist were saying that the arctic sea ice was suppose to be melting in 80+yrs time. Now it looks like its going to melt in the next 5yrs! Thats almost as good (bad) as the weather forecasts we get on TV :) This article is interesting.
http://www.jamaica-gleaner.com/ gleaner/ 20080330/ focus/ focus6.html

evidenced in Jamaica and elsewhere by physical coastal features stranded inland, such as wave-cut notches and elevated coral reefs. Interestingly, there are similar features at about the two-metre mark above present-daysea level.

We are definitely going to get around a 2m rise at some point in the near future!

Basically the coastal cliffs in Jamaica record the various levels at which the sea level stabilized for an extended period.

The waves were able to cut notches in to the cliffs during that time.

It gives us a good indication of where levels will stabilize as different ice sheet melt. This is probably due to the climate settling in a particular state with respect to temperature.

There is lots of evidence out there which suggests that rapid mluti-meter SLR does occur:
High rates of sea-level rise during the last interglacial period
http://www.nature.com/ ngeo/ journal/ v1/ n1/ full/ ngeo.2007.28.html

This is the scary one from down under….
Coral reef clue to fast sea rise
http://www.guardian.co.uk/ world/ 2005/ feb/ 24/ australia.environment

Remember these scientist were saying that the arctic sea ice was suppose to be melting in 80+yrs time. Now it looks like its going to melt in the next 5yrs!

Thats almost as good (bad) as the weather forecasts we get on TV :)

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