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www.atmos-meas-tech-discuss.net/3/1933/2010/
doi:10.5194/amtd-3-1933-2010
© Author(s) 2010. This work is distributed
under the Creative Commons Attribution 3.0 License.
The ground-based MW radiometer OZORAM on Spitsbergen – description and validation of stratospheric and mesospheric O3-measurements
IUP, Universität Bremen, Bremen, Germany
Abstract. This manuscript introduces the OZORAM ground based millimeter wave radiometer. The instrument is deployed to the high Arctic (79° N, 12° E) for measurements of O3 in the upper stratosphere and lower mesosphere.
The discussion covers measurements taken since late 2006. To investigate instrumental biases, the results from September 2008 till spring 2009 are compared to O3 profiles derived from measurements of two instruments onboard polar orbiting satellites, MLS onboard EOS-AURA and SABER onboard TIMED. The agreement is within 20% in the stratosphere and 40% in the mesosphere. The deviations show strong systematic and oscillating features, for which the error discussion of the ground based instrument/measurement gives possible explanations.
Nonetheless, expected features like the diurnal cycle and O3 enhancements due to stratospheric warmings are readily observed, which could not originally be taken for granted given the large deviation from the satellite data.
The nature of the oscillatory deviation is further studied. This study points to a systematic error in the radiative transfer modeling caused by imperfect spectroscopic data.
Discussion Paper (PDF, 1565 KB) Interactive Discussion (Closed, 8 Comments) Final Revised Paper (AMT)
Notice on Discussion StatusCitation: Palm, M., Hoffmann, C. G., Golchert, S. H. W., and Notholt, J.: The ground-based MW radiometer OZORAM on Spitsbergen – description and validation of stratospheric and mesospheric O3-measurements, Atmos. Meas. Tech. Discuss., 3, 1933-1970, doi:10.5194/amtd-3-1933-2010, 2010. Bibtex EndNote Reference Manager XML
