Sea Ice Concentrations from Nimbus-7 Scanning Multichannel Microwave Radiometer (SMMR) and Defense Meteorological Satellites Program (DMSP) Special Sensor Microwave Imager - Special Sensor Microwave Imager Sounder (SSM/I-SSMIS) Passive Microwave Data, Version 2

This data set is generated from brightness temperature data and is designed to provide a consistent time series of sea ice concentrations spanning the coverage of several passive microwave instruments.The data are provided in the polar stereographic projection at a grid cell size of 25 x 25 km. Data coverage began on 26 October 1978 and is ongoing through the most current processing, with updated data processed several times annually. This product is designed to provide a consistent time series of sea ice concentrations—the fraction of ocean area covered by sea ice—for the entire passive microwave record. Sea ice algorithm coefficients are calibrated to reduce differences in sea ice extent and area estimates between the SMMR, SSM/I and SSMIS sensors. The data are generated using the NASA Team algorithm developed by the Cryospheric Sciences Laboratory at the NASA Goddard Space Flight Center (GSFC). DiGirolamo, N., Parkinson, C. L., Cavalieri, D. J., Gloersen, P. & Zwally, H. J. (2022). Sea Ice Concentrations from Nimbus-7 SMMR and DMSP SSM/I-SSMIS Passive Microwave Data. (NSIDC-0051, Version 2). [Data Set]. Boulder, Colorado USA. NASA National Snow and Ice Data Center Distributed Active Archive Center. https://doi.org/10.5067/MPYG15WAA4WX. [describe subset used if applicable]. Date Accessed 12-09-2024.