Guest Blog by NASA SMAP Scientists Dr. Erika Podest and Dr. Narendra Das of the NASA Jet Propulsion Laboratory in Pasadena, California USA. SMAP scientists are using soil moisture in a number of ways, ways that allow all of us to better understand water’s role on Earth: Weather Prediction : Water in the soil has the potential to evaporate (depending on atmospheric temperature and pressure) and when it does it plays a large role in cloud formation. Soil moisture also has a modulating effect on air temperature and humidity therefore having the ability to measure soil moisture ...
Posted in: Field Campaigns: SMAP GLOBE Science Topics: EARTH AS A SYSTEM SCIENTIST SKILLS EARTH SYSTEM SCIENCE GENERAL SCIENCE GLOBE PROTOCOLS Investigation Areas: PEDOSPHERE (SOIL) Primary Audience: TRAINERS TEACHERS STUDENTS PARTNERS SCIENTISTS ALUMNI COUNTRY COORDINATORS
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 ...
Posted in: Curriculum: SCIENCE AND MATH TECHNOLOGY Field Campaigns: SMAP GLOBE Science Topics: EARTH SYSTEM SCIENCE Investigation Areas: PEDOSPHERE (SOIL) Primary Audience: TRAINERS TEACHERS STUDENTS PARTNERS SCIENTISTS ALUMNI COUNTRY COORDINATORS