Community Blogs
 

Included below is a feed of the latest blog posts created by the GLOBE Community. To view a tutorial on how you can create a blog click here 



There are many application for SMAP soil moisture satellite data. Understanding drought risk is vital to the health of the planet and to the lives of potentially billions of people around the world. Soil moisture strongly affects plant growth and hence agricultural productivity, especially during conditions of water shortage and drought. Currently, there is no global in situ network for soil moisture monitoring. Global estimates of soil moisture and plant water stress must be derived from models. These model predictions (and hence drought monitoring) can be greatly enhanced through...


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

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: General Science GLOBE Protocols Earth as a System Earth System Science Scientist Skills Investigation Areas: Pedosphere (Soil) Primary Audience: Alumni Country Coordinators Partners Scientists Students Teachers Trainers

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: Alumni Country Coordinators Partners Scientists Students Teachers Trainers

Most trees obtain water through their massive root systems, but did you know that some trees can absorb water through their leaves as well? This ability is called foliar uptake. Scientists recently discovered that trees in cloud forests use foliar uptake to obtain water. A cloud forest is a forest that has persistent or seasonally persistent fog or low-level cloud cover. Cloud forests are usually in the tropics or subtropics, have evergreen trees (trees that don’t lose their leaves) and tend to have a lot of mosses and vegetation in the understory of the trees. Cloud Forest...


Posted in: GLOBE Science Topics: Earth System Science Investigation Areas: Earth As a System Biosphere

GLOBE’s Earth as a System investigation area cultivates students’ awareness of an intricate web of global connections. Similar to real world scientists, students explore life science concepts, learning that “ organisms can only survive where their needs are met. ”  The Earth as a System investigation area encourages students to observe patterns and connections, such as through phenology. Phenology is the study of how living organisms respond to seasonal changes in their environment. Only through observing and measuring can we notice if changes are occurring and how they occur. ...


Posted in: GLOBE Science Topics: Earth System Science Investigation Areas: Earth As a System Biosphere » Ruby-Throated Hummingbirds