Solar radiation enters the Earth's atmosphere with a portion being scattered by clouds and aerosols.

Processing, archiving and distributing Earth science data
at the NASA Langley Research Center

CALIPSO Total Attenuated Backscatter

The CALIPSO lidar level 1.5 data product contains profiles of attenuated backscatter and aerosol extinction coefficients for which clouds, overcast, surface, subsurface, and totally attenuated samples have been removed before being averaged to a 20 km horizontal resolution. The new V1.00 standard level 1.5 product is based entirely on version 4 CALIOP data, thus providing accurately calibrated attenuated backscatter coefficients and the benefits of the most sophisticated CALIOP scene classification algorithms.
READ MORE

NASA Instruments Image Fireball over Bering Sea

NASA Instruments Image Fireball over Bering Sea

On Dec. 18, 2018, a large "fireball" - the term used for exceptionally bright meteors that are visible over a wide area - exploded about 16 miles (26 kilometers) above the Bering Sea. The explosion unleashed an estimated 173 kilotons of energy, or more than 10 times the energy of the atomic bomb blast over Hiroshima during World War II. It was the most powerful meteor to be observed since 2013; however, given its altitude and the remote area over which it occurred, the object posed no threat to anyone on the ground.
READ MORE

SAGE III-ISS Occultation Event

SAGE III-ISS Occultation Event

This moonset image is illustrating an occultation event from the SAGE III instrument, which is used to measure Ozone, NO2 and NO3 concentrations in the upper atmosphere. Nitrogen Trioxide (NO3) virtually disappears from the atmosphere when the sun rises, but SAGE III/ISS utilizes lunar occultation to measure its concentration. Version 5.1 is the first official release of SAGE III/SS data that includes provisional products suitable for use in both validation and research studies and some new beta data products.
READ MORE

 

ALT text.

MOPITT Imagery for California Fires
The Measurement of Pollution in the Troposphere (MOPITT) instrument is flying on board NASA's Terra satellite. It observes CO in the troposphere through thermal and near infrared channels.The imagery clearly shows enhanced levels of CO associated with the Camp and Woolsey wildfires in northern and southern California, respectively. The high CO west of Mexico may be an aged part of the Woolsey/Camp plumes, based on the location of high CO the day before and on the smoke trajectories shown by the MODIS visible images.
READ MORE

ALT text.

CALIPSO and CloudSat over Typhoon Yutu
Typhoon Yutu near the coast of Japan on October 28, 2018. Data from the CALIPSO lidar and CloudSat radar appear as vertical slices in the atmosphere. CALIPSO lidar data is visualized as a bluish slice, with red and yellow colors denoting more scattering off of clouds and aerosols. CloudSat radar data is superimposed on the CALIPSO slice in brighter colors.
READ MORE

CALIPSO and CloudSat Over Hurricane Maria and Tropical Storm José

Hurricane Maria near the Caribbean Sea and Tropical Storm José off the northeast U.S. coast on September 20, 2017. Data from the CALIPSO lidar and CloudSat radar appear as vertical slices in the atmosphere. CALIPSO lidar data is visualized as a bluish slice, with red and yellow colors denoting more scattering off of clouds and aerosols. CloudSat radar data is superimposed on the CALIPSO slice in brighter colors. Areas of heavier precipitation, found in each storm’s spiral bands, appear in red and pink.
READ MORE

CA Carr Fire

The Carr Fire near Redding California on July 27 was observed by the Multi-angle Imaging SpectroRadiometer (MISR) instrument on NASA's Terra satellite. The Carr Fire was burning since July 23, and as of July 31, it spanned 110,154 acres and was 27 percent contained. The smoke plume height calculation was performed using the MISR INteractive eXplorer (MINX) software tool, and data was acquired during Terra orbit 98973.
READ MORE

DAAC Updates

RSS Feeds - daac updates, announcements, maintenance.

CALIPSO LIDAR L1.5 Standard V1.00 Release Announcement

Wednesday, April 10, 2019

The CALIPSO mission team, in collaboration with the Atmospheric Science Data Center (ASDC) at NASA Langley Research Center, announces the release of a new CALIOP Level 1.5 Product:

 

MOPITT Near-Real Time Data Announcement

Wednesday, February 27, 2019
  • MOPITT will be performing its quasi-annual Hot Calibration from March 11 through March 22, 2019. It is out of science mode during this period and not producing data.

MOPITT V8 Release Announcement

Tuesday, February 12, 2019
The MOPITT team is releasing Version 8 (V8) Level 2 (L2) and Level 3 (L3) retrievals from the Thermal Infrared Radiance (TIR) MOPITT channels, with Near-Infrared (NIR) and Joint (TIR+NIR) Radiances.

SAGE III-ISS Version 5.1 Announcement

Monday, January 28, 2019

The NASA Langley Atmospheric Sciences Data Center (ASDC) and the Stratospheric Aerosol and Gas Experiment (SAGE) III/ International Space Station (ISS) team announce the public release of Version 5.1.