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The BREDOM ground-based DOAS network


Currently four ground-based DOAS instruments are operated as part of BREDOM (Bremian DOAS Network for Atmospheric Measurements):

In January 1993, the first instrument was installed on the roof of our Institute in Bremen, Germany. The second one was set up at the NDSC-Station at Ny-Ålesund, Svalbard, Norway in spring 1995. A third instrument has been deployed to the UNEP building in Nairobi in July 2002. Since October 2012, a new instrument is operating in Athens, Greece.

Additional instruments have been set-up temporarily in different stations such as the Zugspitze (February - July 2003), Summit, Greenland (August 2003 - September 2005), in Mérida, Venezuela (March 2004 to November 2008), in Heraklion on Crete as well as on Sylt (March - September 2005). 

Our travelling instrument has participated in several campaigns e.g. at OHP (NDSC campaign June 1996), Kaashidhoo (INDOEX campaign February and March 1999), the Po valley (FORMAT campaign July/August 2002 and August/September 2003), Andoya (NDACC campaign February / March 2003) and Cabauw (DANDELIONS I campaign June / July 2005 and DANDELIONS II campaign September 2006). Bremen MAXDOAS instruments have also been operated on the TRANSBROM cruise from Japan to Australia (October 2009) and both on the RV Sonne and on the Island of Bohey Dulang off the coast of Borneo/Malaysia during the SHIVA campaign (November 2011).

The BREDOM network is mainly designed for satellite validation. The location of the the stations facilitates investigation and comparison of processes at low and middle latitudes and inside and outside of the polar vortex.

All stationary instruments are measuring continuously. That is at Ny-Ålesund only outside of the polar winter. Using the zenith-viewing direction for stratospheric species and the horizon viewing measurements for tropospheric retrievals, stratospheric column amounts of the trace gases Ozone, NO2, BrO and OClO are retrieved routinely, and tropospheric columns and profiles of NO2, HCHO, CHOCHO, IO, and H2O can also be determined. 

More on the instruments and the data analysis can be found on our MAXDOAS page; for the individual instruments please visit the station pages.

Some sata from our measurements can be accessed via the data products page.

BREDOM references:

web master:  folkard@iup.physik.uni-bremen.de      Last Update: 11-04-16