Axel Schweiger

Publications
Curriculum Vitae (PDF) |
Dr. Schweiger's research focuses on ways to impove estimates of the surface radiation balance in the Arctic. To this end he has been developing and evaluating satellite-based algorithms. He has been assembling the TOVS Polar Pathfinder data set, a 20-year data set of
polar temperature, humidity profiles and cloud information. He is currently working on applications of this data set to derive radiative fluxes and investigates their role in climate variability through sea ice model experiments. Previous research includes work on microwave-based sea ice concentration algorithms and the application of artificial intelligence methods to remote sensing problems. Dr. Schweiger has been with the Polar Science Center since 1992. |
PUBLICATIONS
Schweiger, A. J. Changes in seasonal cloud cover over the Arctic seas from satellite and surface observations (PDF), Geophysical Research Letters, Vol 31, L12207, doi:10.1029/2004GL020067, 2004.
Schweiger,
A. J., R. W. Lindsay, J. A. Francis, J. Key, J. M. Intrieri,
and M. D. Shupe, Validation
of TOVS Path-P data during SHEBA, J. Geophys. Res., 107(C10),
8041, doi:10.1029/2000JC000453, 2002.
Francis,
J. A. and A. J. Schweiger. (2000). A New Window Opens on the
Arctic, Eos, Transactions, American Geophysical Union, Vol.
81, No.8, February, 22, 2000, Pages 77,83.
A. J.
Schweiger, R.W. Lindsay, J.R. Key, and J.A. Francis. 1999,
Arctic Clouds in
Multiyear Data Sets. Geophysical Research Letters. 26(13),
1,845-48.
Key, J.
R., and A.J. Schweiger. 1998. Tools for Atmospheric Radiative
Transfer: Streamer and FluxNet. Computers & Geosciences,
Vol. 24. No. 5, pp 443-451.
R. Kwok, A. Schweiger, D. A. Rothrock, S. Pang and C. Kottmeier
(1998). Assessment of Sea Ice Motion from Sequential Passive
Microwave Observations with ERS and Buoy Ice Motions. Journal
of Geophysical Research. Vol 103, C4, 8191-8214.
Key, J. R. , A. J. Schweiger and R. S. Stone. (1997). Expected
Uncertainty in Satellite-Derived Estimates of the Surface
Radiation Budget at High Latitudes. Journal of Geophysical
Research. (Oceans) Vol. 102, No.C7, 15,837-15,847
Schweiger, A. J. and J. Key. 1997. Estimating surface radiation
fluxes in the Arctic from TOVS HIRS and MSU brightness Temperatures.
International Journal of Remote Sensing. Vol 18., No. 4, 955-970
Lindsay, R.W. , J.A. Francis, P.O.G. Person, D.A. Rothrock
and A.J. Schweiger. 1997. Surface Turbulent Fluxes over Pack
Ice Inferred from TOVS observations. Annals of Glaciology.
Vol. 25, 393-399.
Schweiger, A. J. and J. Key. 1994. Arctic Ocean Radiative
Fluxes and Cloud Forcings estimated from the ISCCP C2 Cloud
Dataset, 1983-1990. Journal of Applied Meteorology. Vol.33,
No. 8, 948-963
Schweiger, A. J., J. Key and M.C. Serreze. 1993. Arctic Sea
Ice Albedo. A Comparison of two Satellite-Derived Data Sets.
Geophysical Research Letter, Vol. 20, No. 1., 41-44.
Key, J., J. A. Maslanik, T. Papakryriakou, M.C. Serreze and
A. J. Schweiger. 1993. On the Validation of Satellite-derived
Sea Ice Surface Temperature. Arctic. (in press)
Schweiger, A.J., Key, J. 1992. Comparison of ISCCP-C2 and
Nimbus-7 satellite-derived cloud products with a surface-based
cloud climatology in the Arctic. Journal of Climate. Vol.5
No. 12, 1514-1527)
Steffen, K., Schweiger, A.J. 1991. NASA Team Algorithm for
Sea Ice Concentration Retrieval from Defense Meteorological
Satellite Program Special Sensor Microwave Imager: Comparison
with Landsat Satellite Imagery. Journal of Geophysical Research,
Vol. 96, no. C12, 21,971 - 21,987.
Steffen, K., Schweiger, A. J. 1990. A Multisensor Approach
to Sea Ice Classification for the Validation of DMSP-SSM/I
Passive Microwave Derived Sea Ice Products.Photogrammetric
Engineering and Remote Sensing. Vol 56, No. 1, 75-82.
Schweiger, A.J., Barry, R.G. 1989. Evaluation of algorithms
for mapping snow cover parameters in the Federal Republic
of Germany using passive microwave data. Erdkunde, B 43/89.
Key. J, Maslanik,J.A., and Schweiger,A.J.1989. Classification
of merged AVHRR and SMMR arctic data with Neural Networks.
Photogrammetric Engineering and Remote Sensing, Vol. 55, No.
9, 1331-1338.
McGuffie, K., Barry, R.G., Schweiger, A.J., Robinson, D.A.,
and Newell, J. 1988. Intercomparison of satellite derived
cloud analyses for the arctic ocean in spring and summer.
International Journal of Remote Sensing, 9(3), 447-467.
Barry, R.G., Crane, R.G., Schweiger, A.J. and Newell, J. 1987.
Arctic cloudiness in spring from satellite imagery. Journal
of Climatology, Vol. 7, 423-451.
Schweiger, A.J., Armstrong, R. and Barry, R.G. 1987. Snow
cover parameter retrieval from various data sources in the
Federal Republic of Germany. In: Large scale effects of seasonal
snow cover eds. B.Goodison, R.G.Barry and J.Dozier IAHS publ
166, International Association of Hydrological Sciences Press,
353-364.
PUBLISHED
CONFERENCE PAPERS, REPORTS
A. J.
Schweiger, C. Fowler, J. Key, J. Maslanik, J. Francis, R.
Armstrong, M.J. Brodzik, T. Scambos, T. Haran, M. Ortmeyer,
S. Khalsa, D. Rothrock and R. Weaver. (1999). P-Cube: A multisensor
data set for polar climate research. To appear in: Proceedings
of the Fith Conference on Polar Meteorology and Oceanography,
American Meteorological Society, January 10-15, 1999, Dallas,
TX.
Francis, J. A. and A. J. Schweiger. (1999). The NASA TOVS
Polar Pathfinder. 18 Years of Arctic data. To appear in: Proceedings
of the Fith Conference on Polar Meteorology and Oceanography,
American Meteorological Society, January 10-15, 1999, Dallas,
TX.
Francis, J. A , Schweiger, A. J. and D. Groves. The NASA Polar
Pathfinder. 18 Years of Arctic data. To appear in proceedings
of the AMS conference, Paris, May, 1998.
Duff, J., Salem, K., Schweiger, A., and Livny, M. (1997).
Processing TOVS Polar Pathfinder Data Using the Distributed
BatchController,Proc. SPIE, Vol. 3117, pp. 132-142, Earth
Observing Systems II,William L. Barnes, Ed.
Schweiger, A.J., Key. J, and Francis. J. 1995. A neural-network
based approach to the retrieval of the surface radiation budget
of the Arctic from TOVS brigthness temperatures. Techical
Proceedings of the Eighth International TOVS Study Conference,
Queenstown, NZ, April 4 - 11, 1995
Maslanik, J.A., J. R. Key and A.J. Schweiger. 1995. Cloud
amount and radiation: Effects of climatology and method on
arctic sea-ice simulations. Proceedings of the Fourth Conference
on Polar Meteorology and Oceanography, Dallas Texas, January
15-20, 1995. 168-173
Schweiger, A.J. and A. D. Rothrock. Monitoring sea ice flux
through Fram Strait. Proceedings of the 2nd ERS-1 users conference.
Hamburg Oct 11-14, 1993
Winebrenner, D., J. Key, A. J. Schweiger, E. Nelson R. Colony,
D. Barber and E. LeDrew. 1993. On links between microwave
and shortwave signatures of multiyear sea ice during the onset
of melt. Proceedings of the Topical Symposium on the Combined
Optical-Microwave Earth and Atmosphere Sensing. March 22-25,Albuquerque,
NM. 74-77
Serreze, M.C, Schweiger, A.J. and Key, J.R. 1993. Comparison
of Two Satellite-Derived Albedo Data Sets for the Arctic Ocean.
Snow Watch 92. Glaciological Data Report , GD-25, 172-188.
Steffen. K, Schweiger, A.J. 1992. Ocean Surface Energy Flux
Estimates from Satellite Data in Arctic Regions. Proceedings
of the Marine Technology Society Conference. Washington, DC.
1992, 434-437.
Schweiger, A.J. and J. Key. 1992. Arctic Radiative Fluxes
and Cloud Forcing Estimated from the ISCCP-C2 Cloud Data Set.
Proceedings of the Third AMS Conference on Polar Meteorology
and Oceanography, Portland Sept. 1992, 13-16.
Steffen, K. and A.J. Schweiger. (1992). SSM/I - Landsat Comparison.
In: Cavalieri, D.J (ed.) NASA Sea Ice Validation Program for
the Defense Meteorological Satellite Program Special Sensor
Microwave Imager: Final Report. NASA Technical Memorandum
104559, 33-46.
Key, J., Schweiger, A.J. and Maslanik,J.A. (forthcoming).
Arctic radiation forcing fields for thermodynamic sea ice
models. Workshop on sea ice thickness. NASA-GODDARD SFC Nov.
1991
Key, J., Maslanik, J.A. and Schweiger, A.J. 1990. Neural Network
vs. Maximum Likelihood Classification of Spectral and Textural
Features in Visible, Thermal, and Passive Microwave Data.
Proceedings, IGARSS 1990, Vol. 2. 1277-1280.
Key, J., Schweiger, A.J. and Maslanik, J.A. 1990. Mapping
Sea Ice with a coupled Numeric/Symbolic System. ACSM/ASPRS
Proceedings Vol.4, Denver, Colorado, March 18, 228-237.
Maslanik, J.A., Key, J. and Schweiger, A.J. 1990. Neural Network
Identification of SeaIce Seasons in Passive Microwave Data.
Proceedings, IGARSS 1990, Vol 2, 281-1284.
Steffen, K., Weaver, R.L. and Schweiger,A.J. 1990. Use of
Landsat MSS, TM, NOAA AVHRR Satellite Data, Aircraft Sar and
Photography for Validation of Passive Microwave Sea Ice Algorithms.
ACMS/ASPRS Proceedings,Annual Convention, Denver, Co. March,
1990
Schweiger, A.J., Maslanik, J.A. and Key. J.R., 1990. Multi-Sensor
and Multi-Dimensional Analysis. Addressing problems of classification
using Artificial-Intelligence Techniques. Proceedings OCEANS
FROM SPACE, VENICE 1990, IAPSO publication (in press)
Schweiger, A.J., Steffen, K. 1989. Comparison of sea ice parameters
retrieved from passive microwave, Landsat MSS and AVHRR imagery.
Proceedings IGARSS 89, Vancouver B.C
Steffen, K., Schweiger, A.J. 1989. Sensitivity of passive
microwave sea ice concentration algorithms to the selection
of locally and seasonally adjusted tie points. Proceedings
IGARSS 89, Vancouver, B.C.
Barry, R.G., and A.J. Schweiger. 1988. Snow cover conditions
in northern and central Europe. Final Report to National Science
Foundation. April, 1988.
Schweiger, A.,J. 1987. Retrieval of snow cover parameters
using passive microwave radiometry in the Federal Republic
of Germany. M.A. Thesis, University of Colorado.
Schweiger, A. J. 1987. A bibliography of snow and ice on highways.
NHRAIC Topical Biblio-graphy No. 13. Natural Hazards Research
and Applications Center, University. of. Colorado.
PUBLISHED
ABSTRACTS/ADDITIONAL CONFERENCE PRESENTATIONS
Schweiger,
A. J. and Francis, J. 1995. TOVS Path-P: A new TOVS-based
data set for Arctic Research. Technical Proceedings of the
Eighth Internationalt TOVS Study Conference. Queenstown, NZ.
April 4-11, 1995
Francis, J., Schweiger, A, J. and Rothrock, D.A. 1995. TOVS
Path-P: A Pathfinder Data Set of Atmospheric and Surface Variables
for Process and Climate Studied of the Arctic Basin. American
Geophysical Union, Baltimore, May 29-June 1, EOS
Steffen., K., Schweiger, A.J. 1992. Bidirectional spectral
reflectance of snow: Comparison of field measurements on the
Greenland ice sheet with Model Calculations. International
Glaciological Society Symposium on Remote Sensing of Snow
and Ice. May 1992.
Schweiger, A.J., Key, J. and Haefliger, M. 1991. Arctic radiative
fluxes and cloud forcings estimated from the ISCCP-C2 cloud
data set, 1983-9186. American Geophysical Union, San Francisco,
December, 9-13, EOS, October 29, 238.
Schweiger, A. J., 1987. Snow cover parameter retrieval from
the SMMR microwave sensor in northern and central Europe.
Association of American Geographers Annual Meeting, Portland,
Or. April 1987.
Schweiger, A.J., Armstrong, R. and Barry, R.G.,1987 Snow cover
parameter retrieval from various data sources in the Federal
Republic of Germany. IAHS conference, Vancouver. BC 1987.
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