Archief OMI Nieuws in 2006 (ALLEEN Engelstalig berichten)
Overzicht van de nieuws berichten in 2006 in het Engels.
2006
Live OMI measurements of UV radiation on the Earth's surface
Date: 25 July 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 and see the images at FMI's VFD site.
UK Record Heatwave and Rising Pollution Observed by Eyes in the Sky
Date: 25 July 2006As 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 in this press release from the University of Leicester.
ANTARCTIC OZONE HOLE TO RECOVER LATER THAN EXPECTED
Date: 30 June 2006Scientists 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 June 2006; update 20 July 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. Read more ...
See also (shorter but with Calipso measurements of same event).
SO2 Emissions from Smelters
Date: 28 June 2006The Peruvian copper smelters are among the world's largest industrial point sources of sulfur dioxide (SO2). OMI is sensitive enough to be able to identify the copper being emitted from the La Oroya and Ilo smelters even though these produce less SO2 than the volcanoes.
In addition to air quality applications, these data provide insights into the different lifetimes, dispersal etc of volcanic vs. industrial emission plumes. Read more ...
First global tropospheric maps show streams of tropospheric ozone crossing the oceans
Date: 28 June 2006The monthly mean maps by the Aura instruments OMI and MLS of tropospheric ozone show pollution streaming from the U.S., Europe and China to the west in summer and pollution from biomass burning in the equatorial zone.
The tropospheric ozone measurements were made by subtracting the MLS stratospheric ozone from OMI column ozone. Read more ...
Asian Dust Storms (movie)
Date: 15 April 2006Asia is suffering through the worst dust storm season in at least five years. The eighth major storm this year clogged the air over China, Korea, and Japan with sand from the Taklamkan and Gobi deserts. The sand picks up a toxic mix of heavy metals and carcinogens as the clouds pass over China's industrial areas, exacerbating health problems due to these storms. Read more ...
Dust Storm over Eastern China
Date: 15 March 2006A large dust storm spread aerosols (airborne particles) over Asia and the Pacific starting on March 9, 2006. The storm reached the Beijing region on March 10, and the tiny particles remained aloft for several more days. The dust cloud remained intense as it migrated eastward from China over Korea and Japan. OMI captured these images on March 9, 11, and 13. Read more ...