The Ice, Cloud, and Land Elevation Satellite – 2 mission: A global geolocated photon product derived from the Advanced Topographic Laser Altimeter System
| Autor: | Philip J. Luers, Kelly M. Brunt, David W. Hancock, T. A. Pennington, Jonah Skoog, Nathan Kurtz, Scott B. Luthcke, Thomas Neumann, Megan R. Bock, Anthony J. Martino, T. Thomas, Thorsten Markus, Luis Ramos-Izquierdo, Kaitlin Harbeck, Lori A. Magruder, Jeffrey Lee, Sungkoo Bae, T. W. Rebold, John F. Cavanaugh, Stanley T Fernandes, Anita C. Brenner |
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| Rok vydání: | 2019 |
| Předmět: |
geography
Ice cloud geography.geographical_feature_category 010504 meteorology & atmospheric sciences 0208 environmental biotechnology Elevation Soil Science Geology Glacier 02 engineering and technology 01 natural sciences Article 020801 environmental engineering Ocean surface topography Observatory Sea ice Altimeter Computers in Earth Sciences Ice sheet 0105 earth and related environmental sciences Remote sensing |
| Zdroj: | Remote Sens Environ |
| ISSN: | 0034-4257 |
| Popis: | The Ice, Cloud, and land Elevation Satellite – 2 (ICESat-2) observatory was launched on 15 September 2018 to measure ice sheet and glacier elevation change, sea ice freeboard, and enable the determination of the heights of Earth’s forests. ICESat-2’s laser altimeter, the Advanced Topographic Laser Altimeter System (ATLAS) uses green (532 nm) laser light and single-photon sensitive detection to measure time of flight and subsequently surface height along each of its six beams. In this paper, we describe the major components of ATLAS, including the transmitter, the receiver and the components of the timing system. We present the major components of the ICESat-2 observatory, including the Global Positioning System, star trackers and inertial measurement unit. The ICESat-2 Level 1B data product (ATL02) provides the precise photon round-trip time of flight, among other data. The ICESat-2 Level 2A data product (ATL03) combines the photon times of flight with the observatory position and attitude to determine the geodetic location (i.e. the latitude, longitude and height) of the ground bounce point of photons detected by ATLAS. The ATL03 data product is used by higher-level (Level 3A) surface-specific data products to determine glacier and ice sheet height, sea ice freeboard, vegetation canopy height, ocean surface topography, and inland water body height. |
| Databáze: | OpenAIRE |
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