At the ENVISAT symposium 2007 in Montreux a poster is presented with goals and status of ADAGUC
ADAGUC at EGU General Assembly 2007 in Vienna
Goals and current status of ADAGUC will be presented in an oral presentation
ADAGUC at National Geo Information Days in Rotterdam
ADAGUC presented 2 posters to the Dutch Geoinformation community in the former van Nelle factory in Rotterdam.
ADAGUC success in Geo-Connected
ADAGUC will receive an additional grant for a top-up project, dealing with climate and forecast data. The Geo-Connected tender has been issued by RGI to establish bridges between research programs.
Presentations workshop 2006 online
The presentations of the ADAGUC workshop are now online. You can access them
OMI Tropospheric NO2
1.1. Product description
tropospheric NO2 columns are retrieved from satellite
observations. They are based on slant column NO2 retrievals
with the DOAS technique, and the KNMI combined
dataset has been developed to monitor air pollution from
anthropogenic and natural sources.
the ADAGUC use cases.
1.2. Time period of content
1.2.1. Time period of content
2004 till today.
1.2.2. Currentness reference
Actual time of observation.
1.3.2. Maintenance and update
1.4. Spatial Domain
1.4.1. Bounding coordinates
coverage: Longitude [-180,180], latitude [-90.,90.]
Figure 2. Global tropospheric NO2 averaged from 2005-2007.
Level 2 data have been regridded to a latitude-longitude grid of 1x1
Figure 2. Europe tropospheric NO2 averaged from 2005-2007.
Level 2 data have been regridded to a latitude-longitude grid of
1.11. Data set credit
K. F. Boersma, R. J. Dirksen, J. P. Veefkind, H. J. Eskes, and R. J.
van der A.
1.12. Cross reference
OMI and GOME-2 tropospheric NO2 data
Error Analysis for Tropospheric NO2
Retrieval from Space, K.F. Boersma, H.J. Eskes and E.J. Brinksma, J.
Geophys. Res. 109 D04311,
2. Data Quality
2.1.1. Source information
slant columns from KNMI.
2.1.2. Processing steps
126.96.36.199. Processing description
Satellite instruments use spectroscopy to retrieve atmospheric trace
gas concentrations in the atmosphere. By comparing the measured
spectrum of the backscattered light from the Earth’s atmosphere
with a reference spectrum, the column density of nitrogen dioxide
along the light path can be determined. The NO2
stratospheric column is deduced from a chemistry-transport model
assimilation run of the NO2 column data. Subsequently, the
assimilated stratospheric column is subtracted from the retrieved
total column, resulting in a tropospheric column.
188.8.131.52. Algorithms used
NO2 retrieval algorithm.
184.108.40.206. Ancillary data
data (wind, temperature, surface pressure) by ECMWF.