Wednesday, August 17, 2011

improving GPS accuracy in the 3rd dimension-Altitude

Researchers who are working to fix global positioning system (GPS) errors have devised software to take a more accurate measurement of altitude .
Read here for details
http://www.physorg.com/news/2011-08-gps-accuracy-3rd-dimension.html

Monday, August 15, 2011

How a Meteor looks from Space


This is a rare photograph taken by NASA astronaut Ron Garan through from space station, a Perseid meteor was captured as the piece of comet dust slammed into the Earth's atmosphere.

Iss-perseid

Here is the latest release video with wonderful explanation....
Interesting and informative.



Courtesy: http://news.discovery.com/space/astronaut-photographs-perseid-meteor-from-space-110814.html
http://youtu.be/lxYNX2XaKkg

Friday, August 12, 2011

Meltic of Arctic to pause..... then resume.....?????

Scientists says that level of Arctic sea ice would decrease rapidly and will eventually disappear during summer if climate change continues.


But in an unexpected new result, the NCAR research team found that Arctic ice under current climate conditions is as likely to expand as it is to contract for periods of up to about a decade.

So, temporary halt to the loss of the ice!!!

At longer time scales, 50 or 60 years, there’s no escaping the loss of ice in the summer.....

The study appears this week in Geophysical Research Letters.

Chunks of sea ice and open water
Sea ice off the Alaskan coast. (©UCAR, Photo by Carlye Calvin


Detailed report: https://www2.ucar.edu/news/5124/arctic-ice-melt-could-pause-near-future-then-resume-again

Wednesday, August 10, 2011

Tsunami @Japan related to Breaking of Antarctic Ice Shelf...???

It's indeed a interesting to see how the Earthquake near Japan coast triggered a Tsunami and caused the breakage of an ice shelf in Antarctica...!!!!

U can see here the images, animation of this hypothesis.
See the link below for detailed analysis
http://news.discovery.com/earth/japan-tsunami-broke-antarctic-ice-shelf-110809.html







courtesy: Analysis by Kieran Mulvaney @ 
http://news.discovery.com/earth

Tuesday, August 9, 2011

What is Crow Instability in Contrails...?

Crow-1 (2)Crow2bCrow3b
The bottom 2 images are zoomed portion from 1st image.
These contrails exhibit a phenomenon known as Crow Instability. Vortices that form within contrails have been observed to occasionally interact with each other....

U can read detailed report here.
http://epod.usra.edu/blog/2011/08/crow-instability-in-contrails.html


Wednesday, August 3, 2011