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Evaluate the application of erts-a data for detecting and mapping snow cover (Document No: 19730002572)
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Copyright Year | 1972 |
| Description | The author has identified the following significant results. Preliminary results of the analysis of a limited sample of ERTS-1 data from the western United States and the Arctic indicate that snow cover can be detected in the MSS-4 and MSS-5 bands by its high reflectance compared to that of the surrounding snow-free terrain. Snow can generally be distinguished from clouds because of well-defined boundaries as compared with the less distinct cloud edges, the lack of shadows characteristic of clouds, and pattern configurations that fit closely with higher elevations and terrain features. At higher latitudes where repetitive ERTS-1 coverage occurs snow can also be identified by the day-to-day continuity of the patterns. In the longer wavelengths, particularly the MSS-7 band, the contrast between snow and snow-free terrain is much lower, and, thus, snow is more difficult to detect. ERTS-1 data from the Canadian Arctic shows the seasonal increase in snow cover in several areas. In other ERTS-1 data, considerable detail is evident in glaciers located along the east and west coasts of Greenland. |
| File Size | 419628 |
| Page Count | 8 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19730002572 |
| Archival Resource Key | ark:/13960/t6j14t97m |
| Language | English |
| Publisher Date | 1972-11-10 |
| Access Restriction | Open |
| Subject Keyword | Geophysics Remote Sensors Multispectral Band Scanners Earth Resources Program Clouds Return Beam Vidicons United States Mapping Imagery Arctic Regions Canada Glaciers Snow Cover Greenland Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Technical Report |
