Bueno pondre algo sobre nuestra ultimamente abandonado seguimiento de la Banquisa!!
El maldito anticiclon que tanto me aburre me ayuda a pensar un poco en la banquisa y otros temas abandonados debido al magnifico invierno que estamos teniendo!
Por un lado nos llega la noticia que uno de los satelites que sigue la extensión y evolución del hielo en hemisferio norte tienen el sensor averiado!!!
Se trata del utilizado por el NSIDC
lo han admitido y dicen estar trabajando en ello...
Aqui un fragmento de la nota que ponen en su web y el enlace a la misma!
"Sign up for the Arctic Sea Ice News RSS feed for automatic notification of analysis updates. Updates are also available via Twitter.
As some of our readers have already noticed, there was a significant problem with the daily sea ice data images on February 16. The problem arose from a malfunction of the satellite sensor we use for our daily sea ice products. Upon further investigation, we discovered that starting around early January, an error known as sensor drift caused a slowly growing underestimation of Arctic sea ice extent. The underestimation reached approximately 500,000 square kilometers (193,000 square miles) by mid-February. Sensor drift, although infrequent, does occasionally occur and it is one of the things that we account for during quality control measures prior to archiving the data. See below for more details.
We have removed the most recent data and are investigating alternative data sources that will provide correct results. It is not clear when we will have data back online, but we are working to resolve the issue as quickly as possible.
Figure 1. Daily Arctic sea ice extent map for February 15, 2009, showed areas of open water which should have appeared as sea ice. Sea Ice Index data. About the data.
—Credit: National Snow and Ice Data Center
High-resolution imageWhere does NSIDC get its data?
NSIDC gets sea ice information by applying algorithms to data from a series of Special Sensor Microwave/Imager (SSM/I) sensors on Defense Meteorological Satellite Program (DMSP) satellites. These satellites are operated by the U.S. Department of Defense. Their primary mission is support of U.S. military operations; the data weren’t originally intended for general science use.
The daily updates in Arctic Sea Ice News & Analysis rely on rapid acquisition and processing of the SSM/I data. Because the acquisition and processing are done in near-real time, we publish the daily data essentially as is. The data are then archived and later subjected to very strict quality control. We perform quality control measures in coordination with scientists at the NASA Goddard Space Flight Center, which can take up to a year. High-quality archives from SSM/I, combined with data from the earlier Scanning Multi-channel Microwave Radiometer (SMMR) data stream (1979–1987) provide a consistent record of sea ice conditions now spanning 30 years"
Link:
[
nsidc.org]
Vamos que de momento habra que olvidarse de ella para hacer el seguimiento.
por otro lado tenemos los datos facilitados por (EOS AMSR-E)
Buena de momento goza de bastante buena salud ,manteinendose en la parte alta del canal de los ultimos años.
Aqui el link para consultarlo.
[
www.ijis.iarc.uaf.edu]
Saludos.
.......
Es broma!
