NSIDC-0116 Polar Pathfinder Daily 25 km EASE-Grid Sea Ice Motion Vectors Fowler, C. and M. Tschudi Polar Pathfinder Daily 25 km EASE-Grid Sea Ice Motion Vectors 2003-05-23 Boulder, Colorado USA NSIDC: National Snow and Ice Data Center http://nsidc.org/data/nsidc-0116.html Technical Contact NSIDC User Services nsidc@nsidc.org 1 303 492-6199 x 1 303 492-2468 x

National Snow and Ice Data Center

CIRES, 449 UCB

University of Colorado

Boulder CO 80309-0449 USA Investigator Mark Tschudi mark.tschudi@colorado.edu

University of Colorado

Colorado Center for Astrodynamics Research (CCAR)

431 UCB

Boulder Colorado 80309-0431 USA Investigator Charles Fowler

University of Colorado at Boulder

Boulder CO USA EARTH SCIENCE Cryosphere Sea Ice Sea Ice Motion Ice Velocity EARTH SCIENCE Cryosphere Sea Ice Sea Ice Motion Ice Velocity EARTH SCIENCE Cryosphere Sea Ice Sea Ice Motion Ice Velocity EARTH SCIENCE Cryosphere Sea Ice Sea Ice Motion Ice Velocity EARTH SCIENCE Cryosphere Sea Ice Sea Ice Motion EARTH SCIENCE Cryosphere Sea Ice Sea Ice Motion EARTH SCIENCE Cryosphere Sea Ice Sea Ice Motion EARTH SCIENCE Cryosphere Sea Ice Sea Ice Motion EARTH SCIENCE Oceans Ocean Winds Surface Winds EARTH SCIENCE Oceans Ocean Winds Surface Winds EARTH SCIENCE Oceans Ocean Winds Surface Winds EARTH SCIENCE Oceans Ocean Winds Surface Winds EARTH SCIENCE Oceans Sea Ice Sea Ice Motion Ice Velocity EARTH SCIENCE Oceans Sea Ice Sea Ice Motion Ice Velocity EARTH SCIENCE Oceans Sea Ice Sea Ice Motion Ice Velocity EARTH SCIENCE Oceans Sea Ice Sea Ice Motion Ice Velocity EARTH SCIENCE Oceans Sea Ice Sea Ice Motion EARTH SCIENCE Oceans Sea Ice Sea Ice Motion EARTH SCIENCE Oceans Sea Ice Sea Ice Motion EARTH SCIENCE Oceans Sea Ice Sea Ice Motion Climatology/Meteorology/Atmosphere AVHRR Buoys DAAC EOSDIS Gridded Gridded Data Ice Motion NASA NASA Pathfinder NOAA/NASA Pathfinder NSIDC Passive Microwave Passive Microwave Data Remote Sensing Sea Ice Motion SMMR SSM/I AVHRR Advanced Very High Resolution Radiometer DRIFTING BUOYS SMMR Scanning Multichannel Microwave Radiometer SSM/I Special Sensor Microwave/Imager BUOYS DMSP 5D-2/F11 Defense Meteorological Satellite Program-F11 DMSP 5D-2/F13 Defense Meteorological Satellite Program-F13 DMSP 5D-2/F8 Defense Meteorological Satellite Program-F8 NIMBUS-7 NOAA-11 National Oceanic & Atmospheric Administration-11 NOAA-12 National Oceanic & Atmospheric Administration-12 NOAA-14 National Oceanic & Atmospheric Administration-14 NOAA-9 National Oceanic & Atmospheric Administration-9 1978-10-25 2006-12-31 complete -90 -53.2028 -180 180 48.7278 90 -180 180 CONTINENT ANTARCTICA GEOGRAPHIC REGION ARCTIC GEOGRAPHIC REGION POLAR OCEAN ARCTIC OCEAN 25 km 25 km ESIP Earth Science Information Partners Program NOAA/NASA PATHFINDER NOAA/NASA Pathfinder Program Quality information for this data set varies by sensor. Refer to the data set guide documentation for accuracy estimates of ice motion from each type of sensor. English NSIDC_DAAC NASA DAAC at the National Snow and Ice Data Center http://nsidc.org/daac/index.html Data Center Contact NSIDC User Services nsidc@nsidc.org 1 303 492-6199 1 303 492-2468

National Snow and Ice Data Center

CIRES, 449 UCB

University of Colorado

Boulder CO 80309-0449 USA NSIDC National Snow and Ice Data Center http://nsidc.org Data Center Contact NSIDC User Services nsidc@nsidc.org 1 303 492-6199 1 303 492-2468

National Snow and Ice Data Center

CIRES, 449 UCB

University of Colorado

Boulder CO 80309-0449 USA FTP 9 - 33 KB PNG FTP 618 - 782 KB Binary FTP 50 - 237 KB ASCII Text FTP 1000 - 1100 KB Photoshop Cracknell, A. 1997. The Advanced Very High Resolution Radiometer. London: Taylor and Francis. Emery, W., C. Fowler, and J. Maslanik. 1995. Satellite Remote Sensing of Ice Motion, in Oceanographic Applications of Remote Sensing, ed. Motoyoshi Ikeda and Frederic W. Dobson. CRC Press, Boca Raton. Isaaks, E., and R. M. Srivastava. 1989. An Introduction to Applied Geostatistics. New York: Oxford University Press. Kalnay, E., M. Kanamitsu, R. Kistler, W. Collins, D. Deaven, L. Gandin, M. Iredell, S. Saha, G. White, J. Woollen, Y. Zhu, A. Leetmaa, R. Reynolds, M. Chelliah, W. Ebisuzaki, W. Higgins, J. Janowiak, K. Mo, C. Ropelewski, J. Wang, R. Jenne, and D. Joseph. 1996. The NCEP/NCAR 40-Year Reanalysis Project. Bulletin of the American Meteorological Society, 77, 437–471. Kidwell, K. 1995. NOAA Polar Orbiter Data User's Guide. U.S. Dept. of Commerce, National Oceanic and Atmospheric Administration, NESDIS. Krasnopolsky, V. M., L. C. Breaker, and W. H. Gemmill. 1995. A Neural Network as a Nonlinear Transfer Function Model for Retrieving Surface Wind Speeds from the Special Sensor Microwave Imager. Journal of Geophysical Research, 100(C6), 11,033–11,045. PDF Maslanik, J., C. Fowler, J. Key, T. Scambos, T. Hutchinson, and W. Emery. 1998. AVHRR-based Polar Pathfinder Products for Modeling Applications. Annals of Glaciology 25:388-392. Rosborough, G., D. Baldwin, and W. Emery. 1994. Precise AVHRR Image Navigation. IEEE Transactions in Geosciences and Remote Sensing 32(3):644-657. Schweiger, A., 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. Proceedings on the 5th Conference on Polar Meteorology and Oceanography, American Meteorological Society, Dallas, TX, 15-20 Jan., 136-141. Thorndike, A. S., and R. Colony. 1982. Sea Ice Motion in Response to Geostrophic Winds. J. Geophys. Res. 87(C8):5845–5852, doi:10.1029/JC087iC08p05845.

Daily ice motion vectors are computed from a wide variety of sensors ranging from passive microwave radiometers, such as the Scanning Multichannel Microwave Radiometer (SMMR), to International Arctic Buoy Programme (IABP) buoy data. Daily gridded fields combine data from all sensors, from November 1978 through December 2006. Grids extend from 48.4° N to 90° N, and from 53.2° S to 90° S. Mean gridded fields include yearly, monthly, and weekly means, and a mean for the entire time series. Both daily and mean gridded fields are in 2-byte integer format, reprojected to 25 km Northern and Southern Hemisphere EASE-Grids. Browse images of mean fields are available in Portable Network Graphics (PNG) and Enhanced Postscript (EPS) formats. Raw ice motion vectors from each sensor are in tab-delimited ASCII text format. The complete data set is available via FTP.

VIEW PROJECT HOME PAGE http://nsidc.org/data/pathfinders/ NOAA/NASA Polar Pathfinder Data USA/NASA CEOS IDN DIF 9.7 2003-05-23 2012-09-27 Prematurely published V02 MD changes; reinstating pre-V02 record until V02 data are ready.