Daily OMI tropospheric NO2 (air pollution) measurements over The Netherlands and Western Europe
 over The Netherlands and Western Europe (last 24 hours)',
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'Tropospheric NO2 (air pollution) over The Netherlands and Western Europe (last 24 hours)'
) "Tropospheric NO2 (air pollution) over The Netherlands and Western Europe (last 24 hours)")
Today's satellite air quality measurements are available around 15:00 hours GMT for Europe. OMI (on the EOS-Aura satellite) passes over Europe around 12:45 hours (GMT) and it takes another 2-2.5 hours before the data are available here. The most recent air quality measurements can be viewed in Google Earth. The TEMIS web site contains a limited archive of air quality and air pollution Google Earth files.
Daily OMI tropospheric NO2 (air pollution) measurements over other regions in the world
Also available on the TEMIS web site.
Disclaimer
OMI level-1b radiance and irradiance data publicly released
On 12 October 2007 the OMI level-1b radiance and irradiance data from the collection 3 data stream have been released publicly to all interested users.The data can be obtained at the GES-DISC.
The instrument and level 0-1 data processing overview section provides users of OMI data with up-to-date information on the instrument behaviour and performance, as well as a full description of the level 0-1 data processing for the collection 3 data stream.
Overview recent OMI news
The most recent OMI News items in English
Mount Etna's SO2 cloud observed above Greece
Date: 01 05 2007
On April 29, 2007 Europe's most active volcano, Mount Etna, has erupted on the southern Italian island of Sicily.
Sulfur dioxide (SO2) in this cloud is observed by OMI a day later above Greece.
Backward trajectory analyses confirms that the SO2 cloud over Greece comes from mount Etna.
Picture courtesy of Carn and Krueger (UMBC) and Krotkov (NASA GSFC).
Information can be obtained at KNMI (Pepijn Veefkind, Mirna van Hoek).
Read more ...
UK Record Heatwave and Rising Pollution Observed by Eyes in the Sky
Date: 25 07 2006
As the UK bakes during this summer's heatwave, sensors in space (AATSR on ESA's
ENVISAT and OMI op NASA's EOS-Aura) have been recording dramatic increases
in both UK land temperature and in air pollution, particularly in major
cities.
During a period of persistent stable summer weather from 15th and 19th
July, temperatures rose to record highs for the U.K. and pollution due
to nitrogen dioxide (NO2), a respiratory inhibitor, appears to have
risen considerably too; the Met Office reported that temperatures on
July 19th reached a record maximum for July.
Read more ...
Live OMI measurements of total Ozone and UV radiation on the Earth's surface
Date: 25 07 2006The Finnish Meteorological Institute (FMI) delivers almost live OMI measurements of the amount of UV radiation on the Earth's surface (as UV-index and erythemally weighted dose) and the total amount of ozone in the atmosphere above Central and North Europe. The measurements of these so-called Very Fast Delivery (VFD) products are on-line within 30 minutes after observation.
During several overpasses per day, OMI has direct contact with FMI's Satellite Data Center at Sodankylä in Northern Finland. During those periods, OMI measurements are broadcasted directly to this data center and directly processed, using processing software from KNMI for cloud and ozone products and the software from FMI for UV processing. Read more ...
ANTARCTIC OZONE HOLE TO RECOVER LATER THAN EXPECTED
Date: 30 06 2006
Scientists from NASA and other agencies have concluded that the
ozone hole over the Antarctic will recover around 2068, nearly 20
years later than previously believed. Their findings, with lead
author Paul Newman (OMI science team member from NASA-GSFC) have been
published today in Geophysical Research Letters (Vol. 33, No. 12.)
For the first time, a model combines estimates of future Antarctic
chlorine and bromine levels based on current amounts as captured
from TOMS and OMI satellite observations, NOAA ground-level
observations, NCAR airplane-based observations, with anticipated
future emissions, the time it takes for the transport of those
emissions into the Antarctic stratosphere, and assessments of future
weather patterns over Antarctica.
Read more ...
OMI Measures Volcanic Gas Cloud (quicktime movie 3,2 Mb)
Date: 29 06 2006On May 20, 2006 a major lava dome collapse at the Soufriere Hills volcano on Montserrat (West Indies) triggered an explosive emission of volcanic gases. The resulting gas cloud penetrated the stratosphere, reaching an altitude of ~20 km. Sulfur dioxide (SO2) in this cloud was tracked by OMI for 3 weeks as it moved westwards across the Pacific, before finally dissipating below detection limits over the Indian Ocean on June 11. See also (shorter but with Calipso measurements of same event). Read more ...