1. Masthead Archive

Masthead Archive

Sensing Arctic Sea Ice

Sensing Arctic Sea Ice

The age of Arctic sea ice can be determined using sensors on Earth observing satellites. Old sea ice (4-5 years old or older) is generally thicker and whiter, and shows more relief. Young sea ice is generally thinner and flatter, and has a blueish tint closer to that of the open sea. Explore Arctic sea ice age data at NASA's NSIDC DAAC.

Arctic sea ice reached a record low seasonal maximum extent of 14.52 million square kilometers (5.607 million square miles) on March 24, 2016. The average Arctic sea ice extent for March 2016 was 14.43 million square kilometers (5.57 million square miles), the second lowest in the satellite record.

Read more about this in the NSIDC's Arctic Sea Ice News & Analysis.

Global Lightning Hot Spots

Global Lightning Hot Spots

The lightning climatology reveals Earth’s lightning hotspot, located over Lake Maracaibo in Venezuela. This area experiences very localized and persistent thunderstorms, which account for the observed high flash rate density. Learn more about NASA lightning research and measurements.

The LIS Very High Resolution Climatology datasets were derived from 16 years of lightning (1998-2013) observations collected by the Lightning Imaging Sensor (LIS). This data presents a higher resolution gridded lightning climatology dataset than previously available, allowing lighting trends and hotspots to be studied.

Explore LIS data at NASA's Global Hydrology Research Center Distributed Active Archive Center (GHRC DAAC).


IMERG Late Run South Central US Rain March 2016

GPM IMERG Heavy Rain in South Central U.S

The Global Precipitation Measurement (GPM) mission provides global observations of rain and snow. The IMERG "Late Run" data set is a near real-time data product combining observations from several different satellites that are inter-calibrated with radar instruments on the GPM Core Observatory satellite.

As shown in this image of IMERG data, averaged over March 7-9, 2016, with the NASA Giovanni system, heavy rain fell in central and southern Arkansas and along the Arkansas/Louisiana border (indicated by the red to yellow color). The heavy rain led to major flooding.

Explore GPM data at NASA's Goddard Earth Sciences Data and Information Services Center (GES DISC).

Sentinel-1A Iceland image

Sentinel-1A Iceland image

In this false-color Sentinel-1 synthetic aperture radar (SAR) image acquired on September 14, 2015, bare surfaces (such as soil) are red and orange; vegetation is green. The large dark spots are glaciated areas that are smooth and have little radar backscatter.

Learn about applications for Sentinel-1A data. Through an agreement between NASA and the European Space Agency (ESA), NASA's Alaska Satellite Facility Distributed Active Archive Center (ASF DAAC) distributes the complete ESA archive of Sentinel-1A SAR data. Explore Sentinel-1A data at ASF DAAC.

Kumamoto, Japan Earthquake

Kumamoto, Japan Earthquake

Each full color cycle, or fringe, in this Sentinel-1A Synthetic Aperture Radar (SAR) image acquired on April 8, and April 20, 2016 indicates motion of 8.5 cm (3.35 in) caused by the 4/16/2016 Kumamoto earthquake. Read about the many uses of Sentinel-1A data.

Through an agreement between NASA and the European Space Agency (ESA), NASA's Alaska Satellite Facility Distributed Active Archive Center (ASF DAAC) distributes the complete ESA archive of Sentinel-1A SAR data. Explore Sentinel-1A data at ASF DAAC.

Image credit: Franz J. Meyer, 2016; contains modified Copernicus Sentinel data 2016. The radar image was combined with NASA/USGS Landsat images in Google Earth (© 2016 Google).

EPIC Full View of Earth from DISCOVR

EPIC Full View of Earth from DISCOVR

This Earth image is from approximately 1 million miles away, and was captured by the Earth Polychromatic Imaging Camera (EPIC) on the Deep Space Climate Observatory (DSCOVR) on December 5, 2015.

DSCOVR is a NASA/NOAA/U.S. Air Force partnership.

Explore DSCOVR data and information at NASA's Atmospheric Science Data Center Distributed Active Archive Center (ASDC DAAC).

Images from the EPIC instrument allow scientists to study daily variations in vegetation, ozone, aerosols, and cloud height and reflectivity across the entire globe.

See daily images of Earth from DSCOVR.

Patagonian Ocean Color

Patagonian Ocean Color

This Joint NASA/NOAA Suomi-NPP/VIIRS image acquired on March 12, 2016, shows high concentrations of microscopic organisms called chlorophyll (as shown by swirls of blue and green). The Patagonian Sea in the southwest Atlantic Ocean is one of the most biologically productive regions in the global ocean.

Explore ocean color data at NASA's Ocean Biology Distributed Active Archive Center (OB.DAAC).

The Visible Infrared Imaging Radiometer Suite (VIIRS) is a scanning radiometer that collects visible and infrared imagery and radiometric measurements of the land, atmosphere, cryosphere, and oceans.

Download VIIRS ocean color data at OB.DAAC

Last Updated: Aug 23, 2017 at 1:23 PM EDT