Testing for nitrogen in your local watershed can help identify potential “œhot spots” in your community that may be contributing to nutrient loading downstream. With a simple, inexpensive field test ...

MODIS website informs a broad audience about MODIS data and products. The MODIS instrument is operating on both the Terra and Aqua spacecraft. It has a viewing swath width of 2,330 km and views the ...

To improve air quality, it is important to know what contributes to polluting the air. Haze comes from a variety of sources. Your skies may be hazy from local traffic, or industry such as for example ...

ASTER website informs a broad audience about ASTER data and products. ASTER data are are available from several archives: ...

Terra has consistently orbited Earth from Pole to Pole for over twenty years, collecting important data about Earth’s systems. Crossing the equator at 10:30 am mean local time allowed Terra’s five ...

Carbon is a fundamental part of the Earth system. It is one of the primary building blocks of all organic matter on Earth and a key element in setting Earth’s temperature. Carbon moves from the ...

Terra collects data about the Earth’s bio-geochemical and energy systems using five sensors that observe the atmosphere, land surface, oceans, snow and ice, and energy budget. Each sensor has unique ...

Mr. Watson currently serves as the NASA Earth Science Mission Operations (ESMO) Project Manager at the Goddard Space Flight Center (GSFC). In this position he is responsible for assuring the safe and ...

When energy from the Sun reaches the Earth, it warms the atmosphere, land, and ocean and evaporates water. The movement of water from the ocean to the atmosphere to the land and back to the ocean—the ...

For 25 years, NASA’s Flagship Earth Observing System satellite, Terra, has collected daily morning Earth observations using five different instruments: ASTER, CERES, MISR, MODIS, and MOPITT.

For nearly 20 years, the Terra satellite maintained a consistent orbital speed and altitude, resulting in a near-constant morning equator crossing time of around 10:30 AM. However, since February 2020 ...

The Earth’s surface plays a critical role in the Earth system by interacting with the ocean and the atmosphere. To understand the Earth system, scientists must observe how the Earth’s surface changes ...