We are pleased to introduce WUWT’s newest addition, the WUWT US Weather History Reference Page
The US Weather History page includes temperature, precipitation and snowfall graphs and graphics covering the prior year in the United States. It will soon be joined by the US Weather Prediction, the US Climate History and the Global Climate Indicators pages. All of which should be good additions, but the Global Climate Indicators page is shaping up to be particularly formidable…
We have also added new graphs and graphics to the Sea Ice, Atmosphere, ENSO and Solar pages. If you have not had the opportunity to look through WUWT’s reference pages, it is highly recommended, as they are very informative, and indicative of the tremendous complexity of Earth’s climate system:
If you have have any suggested additions or improvements to any of the WUWT Reference Pages, please let us know in comments below.
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My sincere thanks to WUWT regular “justthefacts” for his hard work on this – Anthony
Wow, what a treat! The humidity map is rather puzzling (it looks like cloud cover) but I guess intuitively informative. Love the sea surface temperature maps and find the differences between the Pacific and Atlantic coasts amazing. Thank you for your hard work, Just the Facts.
Dear Just The Facts,
You know, apparently, Jason Box’s group got similar results for Greenland using different methodology.
I don’t even much care what either group did.
Since I have no access to quantitative data, I have been tracking Greenland’s melt qualitatively by looking at composite satellite images available on a Danish site. I also look at the MODIS images. I store the composite images on my HD. They are fairly low resolution compared to anything available to a actual researcher.
Even so, the melt during 2010 was visually very dramatic. If I can see rapid changes occurring by looking at low-resolution images, then to me that has significance because I shouldn’t even be able to discern rapid changes from such images unless they are large.
Further, we know that temperatures on southwestern Greenland remained above freezing even through December, unlike prior years when freezing would take affect by September. The images that I look at also allow one to see the effects of runoff in the sea due to the reflectivity of the sediment particles that flow out with the glacial runoff, and runoff could be seen through December. Only lately has there been ice in the sea off the southwest coast sufficient to get in the way of observing the sediment particle reflections.
The same site also used to have graphics of water temperatures around the coast of Greenland, and when certain events occurred like major draining of most all melt lakes along the edge of the ice sheet in August (these are very interesting since they are neon blue against white in the MODIS images, and when they drain out, they leave depressions behind that are greyish where their shadows occur). The number and size of the melt lakes were much larger in 2010 that in any prior year. Further, the retreat of the edge of the ice sheet along the south west was not built back by any accumulation of snowfall this past winter due to temperatures being above freezing. This actually resulted in a lowering of the horizon to the east of Nuuk, causing the sun to appear two days earlier than normal in January.
The other thing that occurred all around the entire coast of Greenland was that none of the fjords really froze over like they had in past years. Not to mention the ice arches did not form at the north end of the Nares Strait so sea ice from the Arctic continued to flow out through December. And the ice that flows out there is in general what is left of the multi-year ice.
Again, this is all qualitative info, but it is easy enough to see what occurs when the ice arches form (as they had done for years) and when they stop forming.
Now, we have a situation where we know that the Arctic Sea temperature has increased, the temperature of the air above the Arctic has increased, the winds have increased in speed, there are more storms, and the ice is much much thinner, leading to its greater susceptibility to being shoved around and broken up and moved out of the Arctic Sea.
Anyway, this is the link to the Danish site: http://www.seaice.dk/latest-ice.html
Once there, you have to click on the link to “Overview pictures of northern and southern hemisphere.”
The images are updated daily so if you want to see them again, you have to download them as their links will not work the next day.
I used to look at a Canadian site to track the sea ice north of the Canadian archipelago, but the images are too fuzzy now due to more storms. They are best when there are no clouds. This is not the case for the Danish images which use some type of system that eliminates cloud cover.
Tenney Naumer says: April 6, 2011 at 8:59 am
You know, apparently, Jason Box’s group got similar results for Greenland using different methodology.
“Jason was a contributing author to “Climate Change 2007″, the definitive report on the science of climate change by the UN’s Intergovernmental Panel on Climate Change (IPCC).”
http://bprc.osu.edu/wiki/Jason_Box_Professional_Bio
Not that that invalidates his research, but is certainly reason for healthy skepticism.
Since I have no access to quantitative data,
I don’t know of any real time data source for Greenland ice melt. This set covers through 2007:
http://nsidc.org/data/nsidc-0218.html
Even so, the melt during 2010 was visually very dramatic. If I can see rapid changes occurring by looking at low-resolution images, then to me that has significance because I shouldn’t even be able to discern rapid changes from such images unless they are large.
This seems logical considering that, if this study is accurate, “The temperatures of North Atlantic Ocean water flowing north into the Arctic Ocean adjacent to Greenland — the warmest water in at least 2,000 year”;
http://wattsupwiththat.com/2011/01/27/the-north-atlantic-heat-is-on/
and the North Atlantic Oscillation was in a strong negative phase for the entirety of 2010:
http://www.cpc.ncep.noaa.gov/products/precip/CWlink/pna/month_nao_index.shtml
http://www.cpc.ncep.noaa.gov/products/precip/CWlink/pna/norm.nao.monthly.b5001.current.ascii.table
The same site also used to have graphics of water temperatures around the coast of Greenland, and when certain events occurred like major draining of most all melt lakes along the edge of the ice sheet in August
There are several good water temp and anomaly graphics and animations on our Ocean Page;
http://wattsupwiththat.com/reference-pages/ocean/
check out these;
http://www7320.nrlssc.navy.mil/global_ncom/anims/nat/
especially this one;
http://www7320.nrlssc.navy.mil/global_ncom/anims/nat/sst12m.gif
and these:
http://www7320.nrlssc.navy.mil/global_ncom/anims/arc/
I used to look at a Canadian site to track the sea ice north of the Canadian archipelago, but the images are too fuzzy now due to more storms. They are best when there are no clouds. This is not the case for the Danish images which use some type of system that eliminates cloud cover.
Check out some of the links in the Source Guide I created at the bottom of the WUWT Sea Ice Page:
http://wattsupwiththat.com/reference-pages/sea-ice-page/
Bremen’s got good regional sea ice graphic:
http://www.iup.uni-bremen.de:8084/amsr/regions.html
National Oceanic & Atmospheric Administration (NOAA) – National Weather Service – Environmental Modeling Center lets you step through and animate 30 days of changes:
http://polar.ncep.noaa.gov/seaice/nh.html
Also, here are good plots from NOAA;
ftp://sidads.colorado.edu/DATASETS/NOAA/G02186/plots/
and Cryosphere Today:
http://arctic.atmos.uiuc.edu/cryosphere/IMAGES/recent365.anom.region.5.html