Have you ever wondered how the SMAP satellite, with an altitude of 685 km (425 miles) above the Earth, can take measurements as precise as the amount of water in the Earth's soil? The quick answer is that it requires precisely calibrated instruments, along with a technological marvel in satellite design. SMAP was designed to use a combination of two precise instruments, one with high resolution, one with high accuracy. THE INSTRUMENTS: Active (High Resolution): SMAP’s radar was designed accurately measure the echoes of very short radio frequency (RF) pulses that bounce (“backscatter”)...
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The SMAP Mission is vital to understanding our planet. Water is an essential source for life. By understanding the amount of water in the soil, or soil moisture, we can apply this information to many things. Monitoring Drought SMAP monitors soil moisture and provides critical information for drought early warning. In fact, a deficit in the amount of moisture in the soil defines agricultural drought. SMAP's measurements will come into play because researchers forecast a threefold increase in drought frequency in many regions of the world by the end of the 21st Century. History shows that...
Weekly Report 1: 10/1/15 - 10/15/15 This report contains two weeks of data collection due to the beginning of the campaign on October 1, 2015: Volumetric Soil Moisture Measurements = 19 Participating Sites = 4 Schools Submitting Data: Shumate Middle School - Michigan - 8 data counts Ramey School - Puerto Rico -7 data counts The University of Toledo -Ohio - 2 data counts Thomas Edison Energy/Smart Charter School - New Jersey - 2 data counts Congratulations to those schools for getting a great start. Let's get more schools participating! Brian
Beste mensen, Het effect van de uitzonderlijk zachte winter op de natuur is ook bij de media niet onopgemerkt gebleven. In de uitzending van het KRO programma Brandpunt op zondag 16 maart komt het onderwerp aan bod. Zie http://gemi.st/KN_1656575. Het item begint op 23:20. Verder zat ik op zondag 9 maart in het programma Jinek op Zondag. Dit is terug te zien op http://gemi.st/KN_1656819. Tenslotte zat ik op woensdag 19 maart in het EO-programma 'Melk en Honing'. De uitzending is terug te bekijken op http://gemi.st/EO_101212300 . Vriendelijke groeten, Arnold