THE ALBEDO EXPERIMENT OF THE SCD2 BRAZILIAN SATELLITE
DOI:
https://doi.org/10.59627/cbens.2014.1830Keywords:
Solar Energy, Planetary Albedo, Solar Cell, SatelliteAbstract
The second satellite of the Brazilian Space Mission of the National Institute of Space Researches (SCD2/MECB-INPE) launched on October 23, 1998 carries on board an experiment of space solar cells produced in Brazil. The main objective of this experiment is to qualify in mission this device. Solar cells act as a sensor of radiation and it allows measure the direct solar radiation of the Sun and the portion of this radiation that it is reflected outside for Earth. Therefore, the experiment allows measure the planetary albedo through the relation between these two values, after spherical angular corrections. The satellite telemetry transmits the data of the Solar Cell Experiment in real time which are received by the ground station located in the city of Cuiabá-MS. As a function of this, the images of monthly average of planetary albedo values cover a circle over South America. This work shows, also, images of annual average of albedo in the period of 1999 up to 2007 with the respective standard deviations images. The seasonal patterns in different areas of South America are verified through analyzes of these images. For example, the months of February, March, April and May the mean planetary albedo on the Amazonian forest is larger and stable than in the remaining of South America, probably, due to intense forest perspiration that it happens in this time of the year.
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