G-CLASS: geosynchronous radar for water cycle science – orbit selection and system design
| Autor: | Stephen E. Hobbs, Andrea Monti Guarnieri, Antoni Broquetas, Jean-Christophe Calvet, Nicola Casagli, Marco Chini, Rossella Ferretti, Thomas Nagler, Nazzareno Pierdicca, Christel Prudhomme, Geoff Wadge |
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| Jazyk: | angličtina |
| Rok vydání: | 2019 |
| Předmět: |
weather forecasting
hydrological techniques atmospheric techniques meteorological radar significant diurnal processes snow melt soil moisture change water resource management geosynchronous protected region geosynchronous orbit g-class system design standard small geosynchronous satellite water cycle science orbit selection mission geosynchronous continental land atmosphere sensing system diurnal water cycle human society c-band geosynchronous radar science objectives high resolution weather prediction societal impacts ground motion observations high temporal resolution imaging intense storms agriculture flooding landslides earthquake volcano subsidence monitoring flexible imaging modes esa earth explorer size 20.0 m Engineering (General). Civil engineering (General) TA1-2040 |
| Zdroj: | The Journal of Engineering (2019) |
| Druh dokumentu: | article |
| ISSN: | 2051-3305 |
| DOI: | 10.1049/joe.2019.0601 |
| Popis: | The mission geosynchronous – continental land atmosphere sensing system (G-CLASS) is designed to study the diurnal water cycle, using geosynchronous radar. Although the water cycle is vital to human society, processes on timescales less than a day are very poorly observed from space. G-CLASS, using C-band geosynchronous radar, could transform this. Its science objectives address intense storms and high resolution weather prediction, and significant diurnal processes such as snow melt and soil moisture change, with societal impacts including agriculture, water resource management, flooding, and landslides. Secondary objectives relate to ground motion observations for earthquake, volcano, and subsidence monitoring. The orbit chosen for G-CLASS is designed to avoid the geosynchronous protected region and enables integration times of minutes to an hour to achieve resolutions down to ∼20 m. Geosynchronous orbit (GEO) enables high temporal resolution imaging (up to several images per hour), rapid response, and very flexible imaging modes which can provide much improved coverage at low latitudes. The G-CLASS system design is based on a standard small geosynchronous satellite and meets the requirements of ESA's Earth Explorer 10 call. |
| Databáze: | Directory of Open Access Journals |
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