Data & Products
Missions & Sensors
SABER is one of four instruments on NASA's Timed (Thermosphere Ionosphere Mesosphere Energetics and Dynamics) mission. It was built by Utah State University Space Dynamics Laboratory and is managed by NASA Langley Research Center.
SABER enhances knowledge of the radiation budget–the balance between Earth's incoming and outgoing energy–by making the first comprehensive global measurements of the energy balance in Earth's upper atmosphere. It measures infrared radiation or heat emitted by the atmosphere over a broad altitude and spectral range in this region. It also accurately determines how strongly the upper atmosphere is heated by ultraviolet radiation from the Sun.
SABER measures the vertical distribution of ozone, water vapor and carbon dioxide which are important gases that warm and cool the Mesosphere and Lower Thermosphere / Ionosphere (MLTI) region through absorption of solar radiation and emission of infrared radiation (heat energy).
SABER's observations provide new information about how temperature, density and pressure change with altitude. They also track the movement of air between the poles, from lower to upper atmospheric regions, from season to season and around the globe. During the mission, SABER will produce a global picture of how the MLTI region changes over time.
In summary, the objectives comprise:
– Kinetic temperature
– O3, H2O, NO, CO2
– O2(1Δ), OH(u), NO(u), O3(n3), CO2(n2)
– Atomic species O and H (O inferred 4 different ways)
– True cooling: CO2(n2), NO(u), O3(n3), H2O(n2)
– Solar heating: O3, O2, CO2(n3)
– Chemical heating: O3, O2, OH(u)
– Reduction of solar and chemical heating efficiencies: O2(1Δ), OH(u), O3(n3), CO2(n3)
Level 2A (Routine)
Vertical profiles of the following parameters day and night
Level 2A (Analysis)
Temperature and constituent densities
Data are available through http://saber.gats-inc.com/index.php
NASA Langley Research Center
The SABER science team is led by:
The TIMED Platform
The TIMED mission is studying the influences of the Sun and humans on the least explored and understood region of Earth's atmosphere - the Mesosphere and Lower Thermosphere/Ionosphere (MLTI). The MLTI region is a gateway between Earth's environment and space, where the Sun's energy is first deposited into Earth's environment. TIMED is focusing on a portion of this atmospheric region located approximately 40-110 miles (60-180 kilometers) above the surface.
The TIMED spacecraft is observing this relatively unexplored frontier from its 388-mile (625-kilometer) circular orbit around the Earth. Employing advances in remote-sensing technology, the spacecraft's instrument suite is working with a worldwide network of ground-based observation sites to obtain an unprecedented set of comprehensive global measurements of the region's temperature, pressure, wind and chemical composition, along with its energy inputs and outputs.
The science objective of the TIMED mission is to understand the MLTI region's basic pressure, temperature and wind structure and the spatial and temporal variations that result from the transfer of energy into and out of this region.
Beside SABER, GUVI (Global Ultraviolet Imager . a spatial scanning, far-ultraviolet spectrograph that is globally measuring the composition and temperature profiles of the MLTI region, as well as its auroral energy inputs), SEE (Solar Extreme Ultraviolet Experiment - a spectrometer and suite of photometers that is measuring solar ultraviolet radiation, the primary energy deposited into the MLTI atmospheric region, which includes solar soft X-rays and extreme-ultraviolet and far ultraviolet radiation) and TIDI (TIMED Doppler Interferometer - an instrument that is globally measuring the wind and temperature profiles of the MLTI region) are onboard of TIMED.
The four instrument principal investigators (PIs) have direct control of their instruments and experiments, individually processing data and generating products for distribution from Payload Operations Centers located at each of the PI institutions across the country. Data is collected and distributed from the Mission Data Center located at APL in Laurel, Md. Data products are accessible via TIMED's web site (www.timed.jhuapl.edu).
All data products generated by the TIMED mission are nonproprietary and reside in the public domain. These data products are kept on-line (or in some cases, near-line) for public distribution through the World Wide Web (WWW).
Users of TIMED data are asked to respect the following guidelines.