Régions: Dehcho Region
étiquettes: atmospheric sciences, hydrological processes, precipitation, energy fluxes, cloud
| chercheur principal: | Haykin, Simon (2) |
| Nᵒ de permis: | 12973 |
| Organisation: | McMaster University |
| Année(s) de permis: |
1999
1998
|
| Délivré: | juin 24, 1998 |
| Équipe de projet: | David Hudak and Robert Nissen |
Objectif(s): The Mackenzie GEWEX Study (MAGS) is the Canadian component of the international effort called the Global Energy and Water Cycle Experiment (GEWEX), in support of a World Climate Research Programme to observe, understand, and model the hydrological cycle and energy fluxes in the atmosphere, at land surface, and in the upper oceans. A radar will be used to measure the precipitation and cloud properties within 150 km of the Fort Simpson airport. These measurements taken during certain 3-week observation periods, will be used to develop and validate models applicable over larger regional areas.
Description du projet: A transportable radar system, called the IPIX radar, will be located on the Fort Simpson airport property and operated for 4 or 5 three week periods between August 1998 and August 1999. The system will be left on site but not operated outside these specific periods. This will be used to measure the precipitation and cloud properties within 150 km of the airport. These measurements will be used to develop and validate models applicable over larger regional areas. The radar system consists of two trailers with a radar, computing and data collection equipment and workspace for researchers. The radar will operate in two modes: one with the antenna rotating at one of three elevation angles, and a second with the antenna stationary. The radar is low power, and even during data collection, transmission is in bursts. There is no safety concern regarding microwave radiation from the system. The radar operates in a portion of the frequency spectrum assigned by the government for radar use, and has an experimental radio licence, to transmit on a noninterference basis. Received radar echo signals are digitized, processed and results stores on CD-ROM. For precipitation, recorded signals will include reflectivity, velocity, and polarization properties. Cloud information will be gathered with the radar pointing vertically, monitoring the moisture of the clouds overhead.
