You are browsing the archive for January 2013 Archives - Dan's Wild Wild Science Journal.

29 January 2013

Salt Lake City Smog Approaches Beijing Levels

Bob Henson at NCAR has an excellent piece on the Salt Lake Smog problem in Atmos News.

Despite those ski resort images of a deep blue sky and wonderful white powder, the air just down the mountain from such ski resorts as Snowbird and Alta has been a rather toxic soup recently. Salt Lake City has endured yet another winter episode of smog that makes the view look more like Beijing than what you would normally picture for Utah. A group of physicians in the city spoke …

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26 January 2013

When The Donut Hole Gets Smaller, It’s About To Snow!

If you think that this image shows snow all around teh radar but none within 40 km or so then you are wrong. Read om to understand what this image is really telling a forecaster.

Around midday Friday I looked at the Doppler Radar images from Dover in Delaware, and from Wakefield Virginia and saw the images below. They are a classic case of impending snow, and something you might find interesting (and want to remember)! Here is the Dover,DE NEXRAD radar at the same time (KDOX). ..and so does the NEXRAD at Sterling in Virginia! So here is what we are really looking at: …

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23 January 2013

Lake Effect Snow Machine Running in High Gear

This true colour image from the NASA Terra satellite on Tuesday. Cold and dry Arctic air is picking up moisture over the Great Lakes and dumping heavy snows on the lee shores. Click for much higher resolution.

SNOWFALL FROM NWS The coldest air in two years has moved into the Northeast and Midwest and with the Great Lakes still not frozen, the heavy snows are really falling in the snow belts. Here in Maryland today we did not reach freezing all day, and will not again tomorrow either.

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19 January 2013

Spectacular Comet Coming?? Maybe!

Spectacular Comet Coming?? Maybe!

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16 January 2013

NASA: 2012 Was 9th Warmest Year on Record. The 9 Warmest Years Have All Occurred Since 1998.

Image from NASA

After the news a couple of weeks ago that the USA had its hottest year on record, NASA and NOAA released the global temperature data today. NOAA pegs it as the 10th warmest and NASA has it as 9th. They both do separate and slightly differing analyses. The bigger story here is that all 9 of the hottest years on record have occurred since 1998. (See below) In case someone tells you …

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12 January 2013

Deadly Frozen Smog Closes In On Beijing

Image from Aljazeera

Temps in Beijing are running around -5C and visibility is less than 200 meters in places. There is a large high pressure system over the region that is causing a strong temperature inversion. This means the air aloft is warmer than the air at the surface so smoke and soot from factories and trucks gets trapped over the city. A blob of warm smoke from a factory smoke stack will begin to rise  because it is …

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Dr. Richard Alley at the AGU- Well worth a watch!

It's the CO2 stupid would; be a good name for this one!

Dr. Richard Alley is one of those few scientists who really connect with the public. He was asked to do the Bjerknes lecture at the AGU meeting in San Francisco last month and it’s an hour of good plain-spoken climate science from a real expert in paleoclimate. I did enjoy the loony letter he shared at the beginning of the lecture. Anyone who works in the science field gets these (I have …

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9 January 2013

King Tide Is Holding Court

King Tide Is Holding Court

The World’s oceans will rise up considerably higher than usual this week due to an effect called “King TIdes”.  The tides are a result of the gravitational forces of the Sun and the Moon of course but when the Moon is full or new we are “lined up” and the gravity from both act in concert with each other. It may seem that a full moon would act opposite but …

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5 January 2013

Yes, The Radiosonde Balloons Go That High

Eric Law pf the NWS shared this picture. The feeling that we lieve beneath a huge sea of air is a myth. Space is just a 10 minute drive away if we had a motorway that ran straight up!

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3 January 2013

The 800 Kilometer Long Shadow

From the NASA Terra satellite on Wednesday Jan. 2,2013.

This true colour image from the NASA Terra satellite today shows an 800 km long shadow stretching from NE Ohio into the Atlantic. The shadow was the result of the low early January sun angle, and a deck of cirrus clouds at around  10km above the surface. Plenty of other things to notice as well. What a meteorologist sees in this image: 1. Strong winds over the mountains of New …

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