Lead Detection and Mapping with Reference to Relationships Between Scale, Sensor Characteristics, Surface Conditions and Atmospheric Properties

• Main Authors: Key, J., Maslanik, J. A., Stone, R. S.
• Other Authors: COOPERATIVE INST FOR RESEARCH IN ENVIRONMENTAL SCIENCE BOULDER CO
• Format: Text
• Language: English
• Published: 1993
• Subjects: Meteorology; Cartography and Aerial Photography; Snow; Ice and Permafrost; Cybernetics; *IMAGE PROCESSING; *RADIATIVE TRANSFER; *ATMOSPHERE MODELS; *SEA ICE; *MAPPING; AEROSOLS; HIGH RESOLUTION; HEAT FLUX; SUBMARINES; HUMIDITY; BEAUFORT SEA; RECONNAISSANCE SATELLITES; THERMAL IMAGES; RADIOMETRY; SONAR; PIXELS; ATMOSPHERIC PRECIPITATION; RADIANCE; ATMOSPHERIC TEMPERATURE; TURBULENT FLOW; FIELD OF VIEW; SATELLITE IMAGERY; LANSAT SATELLITES; AVHRR(ADVANCED VERY HIGH RESOLUTION RADIOMETERS); Arctic; Beaufort Sea; Ice; permafrost; Sea ice
• Online Access: http://www.dtic.mil/docs/citations/ADA275321; http://oai.dtic.mil/oai/oai?&verb=getRecord&metadataPrefix=html&identifier=ADA275321

During the three project years, empirical studies of scale relationships in the retrieval of sea ice lead statistics have been undertaken, as have modeling investigations of atmospheric influences on the satellite signal. Additionally, we have developed statistical models that describe the scaling properties of leads. The empirical studies have been based primarily on comparisons within and between Landsat and AVHRR imagery, while the atmospheric models have been specific to the AVHRR. Submarine sonar data have been used in the statistical model development. Specific accomplishments include: atmospheric temperature and humidity profiles for the Arctic have been constructed from Soviet ice island data and were used in the construction of three-season imagery, and nearest-neighbor resampling has been shown to be the most effective in maintaining the spectral characteristics of leads while spatial interpolation (e.g., bilinear) retains their spatial structure; empirical relationship between pixel size and lead width have been determined; procedures for the retrieval of lead statistics have been developed and applied to Landsat and ERS-1 SAR data; and the relationship between 'apparent' lead widths measured along a transect