{"id":610,"date":"2023-02-22T07:37:46","date_gmt":"2023-02-22T07:37:46","guid":{"rendered":"https:\/\/hygeos.com\/?post_type=avada_portfolio&p=610"},"modified":"2024-04-23T08:04:48","modified_gmt":"2024-04-23T08:04:48","slug":"geo-sds","status":"publish","type":"avada_portfolio","link":"https:\/\/hygeos.com\/en\/project\/geo-sds\/","title":{"rendered":"GEO SDS"},"content":{"rendered":"
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High Spectral Resolution synthetic radiances for Geostationary imagers<\/h1><\/div>

Context<\/h2><\/div>

This project aims providing simulations of geostationary top of atmosphere (TOA) radiances at high spectral resolution.<\/p>\n

HYGEOS\/LOA provide EUMETSAT with at least two full disks at MSG\/SEVIRI spatial grid (3km at nadir) and high spectral resolution (between 0.5nm and 0.25 cm-1<\/sup>) for spectral range covering 0.354 to 15.5 \u03bcm. Using the same spectral resolution, scenes (1000 x 1000 pixels) at higher spatial resolution (~500m at nadir) will be provided.<\/p>\n

The principal driver for the acquisition of such synthetic data by EUMETSAT<\/strong> is to enable evaluation of geostationary satellite imagery (i.e. level 1) quality and characteristics given uncertainties or variability in detector array Spectral Response Functions (SRFs). For example with detector arrays such as present on the FCI (MTG<\/a>), the degree of striping and development of methods to reduce striping may be evaluated. A secondary driver is to enable the exercising of Atmospheric Motion Vectors on synthesised IRS Level-1 products.<\/p>\n

The following animation shows the obtained results for a first disk (2017\/09\/20 at 12:00). This required around 900 000 hours of CPU.<\/p>\n<\/div><\/div><\/div><\/div>