Full title of project:

Global in situ upper air data for climate change research

Main aim of this project was to extend and improve the homogeneity adjustments of the global radiosonde wind and temperature dataset developed at Univ. Vienna. In particular uncertainty estimation has been improved and new reference data other than those from ECMWF have been tried. Successes of the project were not only the many publications as listed below but also the inclusion of RAOBCORE homogeneity adjustments in many leading reanalysis datasets such as ERA-Interim, the Modern Era Retrospective Aanalysis for Research and Applications, and JRA-55. Progress of the project was also instrumental in getting involved in the EU collaborative project ERA-CLIM

For further reading we refer to the final scientific report

Main Publications supported by this project:

• Mayer, M., Trenberth, K. E., Haimberger, L, Fasullo, J. T., 2013: The Response of Tropical Atmospheric Energy Budgets to ENSO. Journal of Climate, doi: http://dx.doi.org/10.1175/JCLI-D-12-00681.1.

• Young, P.J., N. Calvo, D.R. Marsh, W.J. Randel, K.R. Rosenlof, A. Butler, L. Haimberger, and P.J. Kushner, 2013: Agreement in late twentieth century Southern Hemisphere stratospheric temperature trends in observations and CCMVal-2, CMIP3 and CMIP5models. JGR-Atmospheres, 118, 605-613.

• Lott, F.C., Stott, P. A. Mitchell, D. M., Christidis, N. Gillett, N.P., Gray, L. J. , Haimberger, L., Perlwitz, J. and Thorne, P. W., 2013: Revisiting the detection and attribution of changes in radiosonde temperature records. JGR-Atmospheres, 118, 2609-2619, DOI: 10.1002/jgrd.50255

• Mayer, M., and Haimberger, L., 2012. Poleward atmospheric energy transports and their variability as evaluated from ECMWF reanalysis data. Journal of Climate, 25, 734–752.

• Haimberger, L., C. Tavolato, and S. Sperka, 2012: Homogenization of the global radiosonde temperature dataset through combined comparison with reanalysis background series and neighboring stations. J. Climate, 26, 8108-8131. http://dx.doi.org/10.1175/JCLI-D-11-00668.1

• Dai, A., J. Wang, P.W. Thorne, D.E. Parker, L. Haimberger, and X.L. Wang, 2011: A new approach to homogenize daily radiosonde humidity data. J. Climate, 24, 965–991.

• Dee, D. P., Kallen, E., Simmons, A.J., and L. Haimberger, 2011: Comments on “Reanalyses Suitable for Characterizing Long-Term Trends”. Bull. Amer. Meteorol. Soc, 92, 65–70.

• Ladstädter, F., Steiner, A. K., Foelsche, U., Haimberger, L., Tavolato, C., and Kirchengast, G., 2011: An assessment of differences in lower stratospheric temperature records from (A)MSU, radiosondes, and GPS radio occultation, Atmos. Meas. Tech., 4, 1965-1977, doi:10.5194/amt-4-1965-2011