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We all know that the SMAP satellite measures soil moisture. But, how does knowing our planet's soil moisture help us in understanding agriculture's reaction to it? 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 a sustained drought can result in crop failure, deaths of...

Узнать больше О SMAP and Agriculture: An Important Link »

Posted in: Field Campaigns: SMAP Investigation Areas: Pedosphere (Soil) » Soil Moisture - SMAP Block Pattern Pedosphere (Soil) Primary Audience: Trainers Teachers Students Partners Scientists Alumni Country Coordinators

Hello from Medford Memorial Middle School in Medford, New Jersey. The quest to get an accurate soil sample continues at Medford Memorial Middle School, Medford NJ. Hello, we are the students of Memorial’s Citizen Science Education Program. We’re excited to be part of the SMAP campaign, but have not yet been able to enter any data.  Here’s a brief overview of our journey. First, we learned about SMAP as a satellite, and then we studied the protocol. We didn’t have any soil sample cans, so we settled on a sturdy coffee can, Ryan had brought in from home. Ashwin measured 5 cm from the...

Узнать больше О GUEST BLOG from Medford Memorial Middle School in Medford, NJ: Testing and Finessing Soil Moisture Measurements »

Posted in: Field Campaigns: SMAP Investigation Areas: Pedosphere (Soil) » Bulk Density Pedosphere (Soil) » Soil Moisture - SMAP Block Pattern Pedosphere (Soil) » Soil Moisture - Gravimetric Pedosphere (Soil) Primary Audience: Trainers Teachers Students Partners Scientists Alumni Country Coordinators

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 continuously...

Узнать больше О How Do NASA Scientists Use the SMAP Satellite Data? »

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 (“backscatter”)...

Узнать больше О How Does the SMAP Satellite Mission Take Measurements All the Way from Space? »

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
Аватар
By Brian Andrew Campbell, posted 19.10.15 14:05

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...

Узнать больше О Why SMAP Matters! »

Posted in: Field Campaigns: SMAP GLOBE Science Topics: GLOBE Protocols Investigation Areas: Pedosphere (Soil) Primary Audience: Trainers Teachers Students Partners Country Coordinators
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