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On 14/02/13 10:47, Peter Miu wrote:
Nine standard names and units are proposed, and these can be found under the following URL: http://www.eumetsat.int/Home/Main/DataAccess/EUMETSATDataCentre/SP_2013021492840299?l=en
To make replies easier and as some of us (normally me!) may be too lazy to click, I've taken the liberty of cut & pasting the proposed names, units and definitions below, hopefully without errors.
azimuth_angle * degrees * Azimuth angle is the angle measured towards the east, from north, along the astronomical horizon to the intersection of the great circle passing through the point and the astronomical zenith with the astronomical horizon. platform_latitude * degrees_north * Latitude of the satellite measured at the sub-satellite point platform_longitude * degrees_east * Longitude of the satellite measured at the sub-satellite point platform_altitude * m * Altitude of the satellite above mean sea level sensor_band_spectral_width * cm-1 * Bandwidth of the satellite’s spectral channel toa_spectral_irradiance * mW m-2 (cm-1)-1 * "toa" means top of atmosphere; irradiance which is relevant for any sensor measuring in the UV-VIS and NIR. This parameter is reported by integrating over the whole sphere. toa_spectral_reflectance * 1 (dimensionless) * Ratio of radiance to irradiance I/I0, reflection from a thick layer where the layer, here the atmosphere, is part of the reflection's property. toa_outgoing_inband_radiance * mW m-2 sr-1 * "toa" means top of atmosphere; "outgoing" means emitted toward outer space; the radiance is integrated over a discrete band. toa_reflectance * Percent* Ratio of the energy of reflected to incident light at the top of atmosphere.
Cheers, Mike. Latest news: www.pml.ac.uk and @PlymouthMarinePlymouth Marine Laboratory (PML) is a company limited by guarantee registered in England & Wales, company number 4178503. Registered Charity No. 1091222. Registered Office: Prospect Place, The Hoe, Plymouth PL1 3DH, UK.
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