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

COVID-19 Impact on Asian Emissions

COVID-19 Impact on Asian Emissions: Insight from space observations (NASA Terra/MOPITT and ESA S5P/TROPOMI) The COVID-19 outbreak is forcing large changes in global economic activities, including industries and transportation, and in people’s daily life in terms of work, school, shopping, and recreation. The large scale lockdown in China early in the year has resulted in significant decreases in atmospheric pollution, captured by multiple satellite observations. These satellite observations highlight the significant role that human activities are playing in modifying our environment, and also provide an opportunity to understand, verify, and quantify the impact of various activities.


Australian Wildfires Visualization

Data-Driven Storytelling Webinar: March 25, 2020 @ 2pm EDT
Join us as we show you how to discover and download atmospheric data at NASA's Atmospheric Science Data Center (ASDC) in order to showcase your research and enable visualizations of your data and analysis. This webinar will guide users through an Australian Wildfire case study using a systematic approach to learn about, search for, download, visualize, and analyze data for wildfire research.

Australia Wildfires Aerosol Optical Depth

Australia Wildfires observed by CALIPSO and MISR   September - December 2019
Wildfires in Australia have been raging on for months, starting in September 2019 and intensifying to levels that caused a state of emergency to be declared in November 2019. By December 2019, more than 100,000 square miles of New South Wales, Australia’s most populous state, had been charred, impacting bush land, wooded areas, national parks, suburban homes, and creating thick smoke plumes in urban hubs.

CALIPSO Shows Smoke from Australian Fires

CALIPSO Shows Smoke from Australian Fires on Jan.1, 2020
NASA satellites have observed an extraordinary amount of smoke injected into the atmosphere from the Australian fires and its subsequent eastward dispersal. Observations from NASA’s Cloud-Aerosol Lidar and Infrared Pathfinder Satellite Observations (CALIPSO) satellite shows smoke plumes reaching 11 miles (17.7 km) vertically into the lower stratosphere from some energetic firestorms. These storms are fueled by both heat from the fires and water vapor in the atmosphere, which allow them to grow into thunderstorms. 

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.

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MISR and CALIPSO Observe Hurricane Dorian
On August 24, 2019, a tropical wave - a region of low air pressure - developed into a tropical depression about 800 miles southeast of Barbados in the Atlantic Ocean. A region of higher air pressure around the depression steered it westward, where it began to turn into a small cyclone near the Antilles and was reclassified as a tropical storm named Dorian. Dorian quickly intensified to a category 5 hurricane, and made landfall in the Bahamas shortly afterwards on September 1, 2019.

DAAC Updates

RSS Feeds - daac updates, announcements, maintenance.

CALIPSO IIR V4.20 L2 Product Release Announcement

Thursday, April 30, 2020
The Atmospheric Science Data Center (ASDC) at NASA Langley Research Center in collaboration with the CALIPSO mission team announces the release of a new version of the CALIPSO IIR level 2 Track and Swath products.


The New Earthdata Forum Has Answers

Tuesday, March 3, 2020

The new Earthdata Forum provides a central location where data users can interact with subject matter experts from multiple DAACs to discuss general questions about research needs and data applications, and receive help on specific queries about acc

User Profile: Dr. Emily Fischer

Thursday, February 27, 2020

Our atmosphere is a chemical soup that is constantly sampled by orbiting Earth observing satellites.
Dr. Emily Fischer uses these data to better understand how pollutants move in the lower atmosphere.


Earthdata Forum Virtual Launch

Wednesday, February 19, 2020

You are invited to the official launch of the new Earthdata User Forum on Tuesday, February 25, 2020 at 11AM for a demonstration.