Related URL

Link: VIEW PROJECT HOME PAGE Description: NASA Scatterometer Climate Record Pathfinder (SCP)

Geographic Coverage

N: -52.0

S: -90.0

E: 180.0

W: -180.0

N: 90.0

S: 60.0

E: 180.0

W: -180.0

Data Set Citation

Dataset Originator/Creator: David G. Long Dataset Title: NASA SCP Arctic and Antarctic Ice Extent from QuikSCAT, 1999-2004 Dataset Release Date: 2005-07-29 Dataset Release Place: Boulder, Colorado USA Dataset Publisher: National Snow and Ice Data Center (NSIDC) Online Resource: http://nsidc.org/data/nsidc-0265.html

Temporal Coverage

Start Date: 1999-07-19

Stop Date: 2004-12-31

Location Keywords

CONTINENT > ANTARCTICA GEOGRAPHIC REGION > ARCTIC GEOGRAPHIC REGION > POLAR

Data Resolution

Latitude Resolution: 2.225 km, 4.45 km Longitude Resolution: 2.225 km, 4.45 km Temporal Resolution: Daily

Science Keywords

CRYOSPHERE >SEA ICE >ICE EXTENT    [Definition]

OCEANS >SEA ICE >ICE EXTENT    [Definition]

ISO Topic Category

CLIMATOLOGY/METEOROLOGY/ATMOSPHERE

Platform

SATELLITES    [Information]

QUICKBIRD >DigitalGlobe's QuickBird    [Information]

Instrument

Scatterometers    [Information]

SEAWINDS >SeaWinds Scatterometer    [Information]

Project

EOSDIS >Earth Observing System Data Information System    [Information]

ESIP >Earth Science Information Partners Program    [Information]

SCP >NASA Scatterometer Climate Record Pathfinder    [Information]

Quality

Sea ice extent images were manually checked for spatial and temporal consistency. NSIDC noticed some inconsistencies in the ice extents from QuikSCAT. Slice images appear much noisier than egg images in the Arctic, particularly in 2003 and 2004. Antarctic ice extents should match well between QuikSCAT and Special Sensor Microwave/Imager (SSM/I) using a 30% ice concentration threshold, but a preliminary analysis shows they match well even with a 15% threshold. In the Arctic, SSM/I shows much greater winter ice extents compared to QuikSCAT. The differences in arctic ice extent between SSM/I and QuikSCAT may relate to the physical properties of the ice, in the sense that QuikSCAT does not 'see' the first-year ice as readily as it sees the more highly scattering multiyear ice. In the Antarctic -- where pancake ice, frazil ice formation, and refrozen snow slush at the snow/ice interface are prevalent -- scattering is sufficient enough to yield similar extent results between SSM/I and QuikSCAT scatterometer data. This data set is unchanged from the original format. An improved version of this data set will be available in the future.

Use Constraints

Any use of images or data should include the following acknowledgement and citations: 'Ice extent images (or maps) are courtesy of David G. Long at Brigham Young University, generated by the Scatterometer Climate Record Pathfinder project from data obtained from the PO.DAAC.' Early, D.S., and and D.G. Long. 2001. Image reconstruction and enhanced resolution imaging from irregular samples. IEEE Transactions on Geoscience and Remote Sensing 39(2): 291-302. Long, D.G. 2004. NASA SCP arctic and antarctic ice extent from QuikSCAT, 1999-2004. Boulder, CO, USA: National Snow and Ice Data Center. Digital media. Remund, Q.P., and D.G. Long. 1999. Sea ice extent mapping using Ku-band scatterometer data. Journal of Geophysical Research 104(C5): 11515-11527. Please send reprints of papers, reports, or presentations using these data to NSIDC User Services, the Physical Oceanography Distributed Active Archive Center (PO.DAAC) and David Long.

Keywords

DAAC

ice sheets

Ku- band radar

landforms

NASA

NSIDC > National Snow and Ice Data Center

NSIDC DAAC

QuikSCAT

Satellite Radar Data

Scatterometer

SCP > Scatterometer Climate Record Pathfinder

Sea Ice Extent

Data Set Progress

COMPLETE

Originating Center

NSIDC_DAAC

Data Center

NSIDC Distributed Active Archive Center    [Information] Data Center URL: http://nsidc.org/daac/index.html Dataset ID: NSIDC-0265 Data Center Personnel Name: NSIDC USER SERVICES Phone: +1 (303) 492-6199 Fax: +1 (303) 492-2468 Email: nsidc at nsidc.org Contact Address: National Snow and Ice Data Center CIRES, 449 UCB University of Colorado City: Boulder Province or State: CO Postal Code: 80309-0449 Country: USA

National Snow and Ice Data Center    [Information] Data Center URL: http://nsidc.org Dataset ID: NSIDC-0265 Data Center Personnel Name: NSIDC USER SERVICES Phone: +1 (303) 492-6199 Fax: +1 (303) 492-2468 Email: nsidc at nsidc.org Contact Address: National Snow and Ice Data Center CIRES, 449 UCB University of Colorado City: Boulder Province or State: CO Postal Code: 80309-0449 Country: USA

Distribution

Distribution_Media: FTP Distribution_Size: 12 to 17 MB Distribution_Format: binary

Distribution_Media: FTP Distribution_Size: 4 to 5 MB Distribution_Format: ASCII text

Distribution_Media: FTP Distribution_Size: 7 to 10 MB Distribution_Format: PNG

Personnel

NSIDC USER SERVICES Role: TECHNICAL CONTACT Phone: +1 (303) 492-6199 Fax: +1 (303) 492-2468 Email: nsidc at nsidc.org Contact Address: National Snow and Ice Data Center CIRES, 449 UCB University of Colorado City: Boulder Province or State: CO Postal Code: 80309-0449 Country: USA

DAVID G. LONG Role: INVESTIGATOR Phone: 801-422-4383 Fax: 801-422-0201 Email: long at ee.byu.edu Contact Address: BYU Center for Remote Sensing Brigham Young University 459 Clyde Building City: Provo Province or State: UT Postal Code: 84602 Country: USA