The TeleGis laboratory of the University of Cagliari, through a National Operating Program, is activating a system of direct reception of data from the MODIS sensors using 36 spectral bands from the satellites Terra and Aqua. The data, collected from multiple daily orbits, relate to an area that extends from northern Europe to the southern Sahara, which includes the entire Mediterranean Basin. One of the goal of this project is the free distribution of these satellite data through our web- site. These are extremely interesting data for the daily monitoring of a series of environmental topics including observations on dust transport, sea temperature, vegetation stress, large geological structures, etc. Plans for project ANTENNA include the possibility of developing a network of laboratories and institutional bodies interested in receiving these data for free. Each one may become a centre of interest for the development of common applications or may simply collect data only when needed. MODIS is viewing the entire Earth’s surface every 1 to 2 days, acquiring data in 36 spectral bands between 0.405 and 14.385 μm, and at three spatial resolutions – 250m (Bands 1-2), 500m (Bands 3-7), and 1,000m (Bands 8-36). Swath width is 2300 km for all channels. The MODIS Science Team, NASA, has already developed 44 products (MOD01-MOD44), but most of them have not yet been completely calibrated or validated by ground-truth data in various ecological systems. The instrument is able to estimate surface temperature with a spatial resolution of 1 km. Furthermore, it is equipped with channels to measure the ocean colour from 415 to 653 nm (1km resolution), determine chlorophyll fluorescence at the water surface and measure the chlorophyll-A amount. Besides that, it is capable of obtaining information on vegetation and land properties, land cover type, vegetation indices and snow cover and reflectance (500 m resolution). MODIS can obtain cloud cover with 500 m resolution at day and 1000 m at night, furthermore it determines cloud and aerosol properties, biomass burning, global distribution of atmospheric stability and total rain water. Our interest is focused on monitoring Mediterranean area and to compare along a transept north-south from Sardinia to Tunisia the different environmental features in a multi-temporal and multi-scale approach with particular interest on degradation and desertification phenomena. The MODIS data will be a useful way to observe with a good ground and radiometric resolution the global changes during the seasons and to propose a environmental model for landscape evolution.
The ANTENNA Project: a satellite data network in the Mediterranean Basin.
MELIS, MARIA TERESA;
2003-01-01
Abstract
The TeleGis laboratory of the University of Cagliari, through a National Operating Program, is activating a system of direct reception of data from the MODIS sensors using 36 spectral bands from the satellites Terra and Aqua. The data, collected from multiple daily orbits, relate to an area that extends from northern Europe to the southern Sahara, which includes the entire Mediterranean Basin. One of the goal of this project is the free distribution of these satellite data through our web- site. These are extremely interesting data for the daily monitoring of a series of environmental topics including observations on dust transport, sea temperature, vegetation stress, large geological structures, etc. Plans for project ANTENNA include the possibility of developing a network of laboratories and institutional bodies interested in receiving these data for free. Each one may become a centre of interest for the development of common applications or may simply collect data only when needed. MODIS is viewing the entire Earth’s surface every 1 to 2 days, acquiring data in 36 spectral bands between 0.405 and 14.385 μm, and at three spatial resolutions – 250m (Bands 1-2), 500m (Bands 3-7), and 1,000m (Bands 8-36). Swath width is 2300 km for all channels. The MODIS Science Team, NASA, has already developed 44 products (MOD01-MOD44), but most of them have not yet been completely calibrated or validated by ground-truth data in various ecological systems. The instrument is able to estimate surface temperature with a spatial resolution of 1 km. Furthermore, it is equipped with channels to measure the ocean colour from 415 to 653 nm (1km resolution), determine chlorophyll fluorescence at the water surface and measure the chlorophyll-A amount. Besides that, it is capable of obtaining information on vegetation and land properties, land cover type, vegetation indices and snow cover and reflectance (500 m resolution). MODIS can obtain cloud cover with 500 m resolution at day and 1000 m at night, furthermore it determines cloud and aerosol properties, biomass burning, global distribution of atmospheric stability and total rain water. Our interest is focused on monitoring Mediterranean area and to compare along a transept north-south from Sardinia to Tunisia the different environmental features in a multi-temporal and multi-scale approach with particular interest on degradation and desertification phenomena. The MODIS data will be a useful way to observe with a good ground and radiometric resolution the global changes during the seasons and to propose a environmental model for landscape evolution.
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