Expression of Commitment
to COST Action ES-0604
Title: “Water Vapour in the Climate System (WaVaCS)”
1./ Individual’s Name:
Stefan A. Buehler
2./ Organization Name & Address:
Department of Space Science
Lulea University of Technology
Box 812
98128 Kiruna
Sweden
Phone: +46 980 7 9177
Fax: +46 980 7 9050
Email: sbuehler at ltu.se
3./ Contribution:
a./ Role in Action:
MC member.
b./ Parts of the scientific programme where contributions will be made:
Contributions to first and third work area of the COST Action (observations, integration of theoretical
and experimental knowledge). In collaboration with Mathias Milz from same research group.
4./ Deliverables:
Humidity climatologies from satellite sensors, in particular operational meteorological
microwave instruments. Derivation of climatologies from satellite data, and
comparison/validation against other data sets.
5./ Timetable:
First half 2008: Comparison to IR.
2008/2009: Processing of all available microwave data, comparison to other data sets
2009/2010: Time series analysis
6./ Manpower approximately dedicated to the Action:
Myself, plus coworker Mathias Milz.
7./ Assurance:
Activities agree with our own research agenda. Explicit funding for our contribution and the
contribution of the other Swedish partners has been applied for at the Swedish Research Council.
Application result is not yet known. If not funded externally, our contribution will be funded LTU
internally.
8./ Foreseen collaboration:
With Patrick Eriksson (Chalmers) and coworkers: Satellite data analysis tools and
climatology cross-validation.
With Ulrika Willén (SMHI) and coworkers: Climate model comparison.
With Sheila Kirckwood (IRF) and coworkers: Lagrangian model comparison.
With other WG1 partners: Intercomparison / cross-validation activities.
9./ Previous experience:
Humidity climatology and satellite remote sensing research experience since 1995. COST
experience as chairman of COST 723.
10./ Publications: (list relevant publications since 2002)
Only first author publications with peer-review are listed here. See www.sat.ltu.se for a full
list.
1. Buehler, S. A., C. Jimenez, K. F. Evans, P. Eriksson, B. Rydberg, A. J.
Heymsfield, C. Stubenrauch, U. Lohmann, C. Emde, V. O. John, T. R. Sreerekha
and C. P. Davis (2007),
A concept for a satellite mission to measure cloud ice water path and ice
particle size,
Q. J. R. Meteorol. Soc., 133(S2), 109–128, doi:10.1002/qj.143.
2. Buehler, S. A., M. Kuvatov, T. R. Sreerekha, V. O. John, B. Rydberg, P. Eriksson
and J. Notholt (2007),
A cloud filtering method for microwave upper tropospheric humidity
measurements,
Atmos. Chem. Phys., 7(21), 5531–5542.
3. Buehler, S. A., N. Courcoux and V. O. John (2006),
Radiative transfer calculations for a passive microwave satellite sensor:
Comparing a fast model and a line-by-line model,
J. Geophys. Res., 111, D20304, doi:10.1029/2005JD006552.
4. Buehler, S. A., A. von Engeln, E. Brocard, V. O. John, T. Kuhn and P. Eriksson
(2006),
Recent developments in the line-by-line modeling of outgoing longwave
radiation,
J. Quant. Spectrosc. Radiat. Transfer, 98(3), 446–457,
doi:10.1016/j.jqsrt.2005.11.001.
5. Buehler, S. A., M. Kuvatov and V. O. John (2005),
Scan asymmetries in AMSU-B data,
Geophys. Res. Lett., 32, L24810, doi:10.1029/2005GL024747.
6. Buehler, S. A., C. L. Verdes, S. Tsujimaru, A. Kleinboehl, H. Bremer, M.
Sinnhuber and P. Eriksson (2005),
The Expected Performance of the SMILES Submillimeter-Wave Limb
Sounder compared to Aircraft Data,
Radio Sci., 40(3), RS3016, doi:10.1029/2004RS003089.
7. Buehler, S. A. and V. O. John (2005),
A Simple Method to Relate Microwave Radiances to Upper Tropospheric
Humidity,
J. Geophys. Res., 110, D02110, doi:10.1029/2004JD005111.
8. Buehler, S. A., P. Eriksson, T. Kuhn, A. von Engeln and C. Verdes (2005),
ARTS, the Atmospheric Radiative Transfer Simulator,
J. Quant. Spectrosc. Radiat. Transfer, 91(1), 65–93,
doi:10.1016/j.jqsrt.2004.05.051.
9. Buehler, S. A., M. Kuvatov, V. O. John, U. Leiterer and H. Dier (2004),
Comparison of Microwave Satellite Humidity Data and Radiosonde Profiles:
A Case Study,
J. Geophys. Res., 109, D13103, doi:10.1029/2004JD004605.
10. Buehler, S. A. and N. Courcoux (2003),
The Impact of Temperature Errors on Perceived Humidity Supersaturation,
Geophys. Res. Lett., 30(14), 1759, doi:10.1029/2003GL017691.