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The BREDOM ground-based DOAS network
Currently
five 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 March 2004, another instrument is operating in Mérida, Venezuela, adding to the still sparse network of tropical measurement stations. The most recent site (setup in August 2007) is Heraklion on Crete.
Additional instruments have been set-up temporarily in different stations such as the Zugspitze (February - July 2003), Summit, Greenland (August 2003 - September 2005) or 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).
The BREDOM network is mainly designed for satellite validation. The location of the the five 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, 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.
Data from our measurements can be accessed via the data products page.
BREDOM references:
- Wittrock, F., A. Richter, H. Oetjen, J. P. Burrows, M. Kanakidou, S. Myriokefalitakis, R. Volkamer, S. Beirle, U. Platt, and T. Wagner, Simultaneous global observations of glyoxal and formaldehyde from space, Geophys. Res. Lett., 33, L16804, doi:10.1029/2006GL026310, 2006
- SCIAMACHY validation with ground-based DOAS observations final report (in German)
- A. C. Vandaele, C. Fayt, F. Hendrick, C. Hermans, F. Humbled, M. Van Roozendael, M. Gil, M. Navarro, O. Puentedura, M. Yela, G. Braathen, K. Stebel, K. Tørnkvist, P. Johnston, K. Kreher, F. Goutail, A. Mieville, J.-P. Pommereau, S. Khaikine, A. Richter, H. Oetjen,F. Wittrock, S. Bugarski, U. Frieß, K. Pfeilsticker, R. Sinreich, T. Wagner, G. Corlett, and R. Leigh, An intercomparison campaign of ground-based UV-visible measurements of NO 2, BrO, and OClO slant columns: Methods of analysis and results for NO2, JGR, 110, doi:10.1029/2004JD005423, 2005
- Heckel, A., A. Richter, T. Tarsu, F. Wittrock, C. Hak, I. Pundt, W. Junkermann, and J. P. Burrows, MAX-DOAS measurements of formaldehyde in the Po-Valley, Atmos. Chem. Phys., 5, 909–918, 2005
- F. Wittrock, H. Oetjen, A. Richter, S. Fietkau, T. Medeke, A. Rozanov, J.
P. Burrows
MAX-DOAS measurements of atmospheric trace gases in Ny-Ålesund - Radiative transfer studies and their application, Atmos. Chem. Phys., 4, 955-966, 2004 - Aliwell, S. R., M. Van Roozendael, P. V. Johnston, A. Richter, T. Wagner, D. W. Arlander, J. P. Burrows, D. J. Fish, R. L. Jones, K. K. Tornkvist, J.-C. Lambert, K. Pfeilsticker, and I. Pundt, Analysis for BrO in zenith-sky spectra; An intercomparison exercise for analysis improvement, JGR, doi:10.1029/2001JD000329, 2002
- Sinnhuber, B.-M., D. W. Arlander, H. Bovensmann, J. P. Burrows, M. P.
Chipperfield, C.-F. Enell, U. Frieß, F. Hendrick, P. V. Johnston, R. L. Jones,
K. Kreher, N. Mohamed-Tahrin, R. Müller, K. Pfeilsticker, U. Platt, J.-P.
Pommereau, I. Pundt, A. Richter, A. M. South, K. K. Toernkvist, M. Van
Roozendael, T. Wagner, and F. Wittrock,
Comparison of measurements
and model calculations of stratospheric bromine monoxide, JGR, doi:10.1029/2001JD000940,
2002
- Wittrock, F., R. Müller, A. Richter, H. Bovensmann, and J.P. Burrows, Observations of Iodine monoxide above Spitsbergen, Geoph. Res. Let., Vol. 27, No. 10, p1471-1474, 2000.
- Winterrath, T., T. P. Kurosu, A. Richter and J. P. Burrows, Enhanced O3 and NO2 in thunderstorm clouds: convection or production?, Geophys. Res. Lett., No. 26, pp. 1291-1294, 1999.
- Pfeilsticker, K., D. W. Arlander, J. P. Burrows, F. Erle, M. Gil, F. Goutail, C. Hermans, J.-C. Lambert, U. Platt, J.-P. Pommereau, A. Richter, A. Sarkissian, M. van Roozendael, T. Wagner, and T. Winterrath, Intercomparison of the influence of tropospheric clouds on UV-visible absorptions detected during the NDSC intercomparison campaign at OHP in June 1996, Geophys. Res. Lett., No. 26, pp. 1169-1173, 1999.
- Roscoe, H. K., et al., Slant Column Measurements of O3 and NO2 during the NDSC Intercomparison of Zenith-Sky UV-Visible Spectrometers in June 1996, J. Atm. Chem., No. 32, pp. 281-314, 1999.
- Richter, A., M. Eisinger, A. Ladstätter-Weißenmayer and J. P. Burrows, DOAS zenith sky observations. 2. Seasonal variation of BrO over Bremen (53°N) 1994-1995, J. Atm. Chem., No. 32, pp. 83-99, 1999.
- Eisinger, M., A. Richter, A. Ladstätter-Weißmayer, and J. P. Burrows, DOAS zenith sky observations: 1. BrO measurements over Bremen (53°N) 1993-1994, J. Atm. Chem., No. 26, pp. 93-108, 1997.