Browse Data by Topic

Our data pathfinders guide you by topic to the data, tutorials, and tools you need for your research.

Atmosphere

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Terrestrial Hydrosphere

New on Earthdata

Estimating Surface PM2.5 Using Satellite Data and Other Information Sources

This training covers the theoretical approaches and key datasets to estimate historical PM2.5 from satellite aerosol optical depth.

False-color corrected reflectance image overlaid with flood information for Lake Bangweulu and the surrounding wetlands on 27 April 2026 from the MODIS instrument aboard the Terra satellite

Worldview Image of the Week

2 MIN READ

A Different View of Lake Bangweulu and Wetlands, Zambia

The MODIS instrument aboard the Terra platform captured this image on April 27, 2026.

Sentinel false-color imagery embedded in the FIRMS portal makes it easier to detect healthy vegetation..

Tutorial

6 MIN READ

Customize Fire Related Imagery Through the HLS Interface, TiTiler, and FIRMS

FIRMS has incorporated additional capabilities into the HLS dropdown menu of its interactive map, including four vegetation indices and the ability for user to create their own red, green, blue (RGB) image composites through the TiTiler-CMR service.

This HLS color-infrared composite image —generated via the TiTiler-CMR API in the Worldview application — shows the area around Cambridge, Maryland.

Feature Article

5 MIN READ

Tailoring the View: TiTiler-CMR Customizes HLS Imagery in Worldview and FIRMS

The TiTiler-CMR service generates dynamic, on-demand map tile layers that can be incorporated into GIS software and visualization applications. Two NASA mapping applications – Worldview and FIRMS – have harnessed the versatility of this service.

3 MIN READ

Monitoring and Predicting Floods Using Earth Observations for Planning and Preparedness

Training

False-color Harmonized Landsat Sentinel-2 image of Cambridge, MD

4 MIN READ

Customize HLS RGB Imagery Composites in Worldview

Tutorial

This map depicts the level of evapotranspiration across the continental United States.

7 MIN READ

Kicking off Development of New Earth Observation Solutions

Feature Article

True-color corrected reflectance image of smoke emanating from wildfires in Georgia, USA on 21 April 2026 from the VIIRS instrument aboard the NOAA-21 satellite.

2 MIN READ

Wildland Fires in Georgia

Worldview Image of the Week

Earthdata Search

Earthdata Search enables data discovery, search, comparison, visualization, and access across NASA’s Earth science data holdings.

image of GIS ocean surface temperature data

Earthdata GIS

Earthdata GIS is a resource for distributing cloud-native, GIS-ready NASA Earth science data and services, including over 200 raster and feature geospatial services as well as resources such as thematic applications and ArcGIS StoryMaps.

image of Aurora crater in the ionosphere

GUARDIAN

The GNSS-based Upper Atmospheric Realtime Disaster Information and Alert Network (GUARDIAN) is a near real-time (NRT) ionospheric monitoring tool for natural hazards warning.

Open Science

We empower a collaborative scientific process through the open sharing of data and knowledge. Our open data, services, and software policies ensure that data are fully available to any user for any purpose.

Earth Science Data Systems 2025 Fiscal Year Highlights

View All Program Metrics

This graph shows the fiscal year 2026 archive data volume and distribution increasing.

This graph shows the Earth science data archive growth projection soaring to over 500 Petabytes in 2030.

+7.4 billion

files distributed to end users

10+ million

distinct data and service users

178+ petabytes

of Earth science data available

Explore Learning Resources

NASA’s massive archive of Earth science data are free and open to any user for any purpose—but accessing, analyzing, visualizing, and applying these data requires a certain degree of knowledge about Earth observation data and how it is collected and optimized.

Check out our catalog of learning resources to better understand data basics, explore geographic information systems (GIS), and level up your skills in areas ranging from data in the cloud to using a representational state transfer (REST) interface.

Your Gateway to NASA  Earth Observation Data

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Browse Data by Topic

New on Earthdata

Estimating Surface PM2.5 Using Satellite Data and Other Information Sources

A Different View of Lake Bangweulu and Wetlands, Zambia

Customize Fire Related Imagery Through the HLS Interface, TiTiler, and FIRMS

Tailoring the View: TiTiler-CMR Customizes HLS Imagery in Worldview and FIRMS

Monitoring and Predicting Floods Using Earth Observations for Planning and Preparedness

Customize HLS RGB Imagery Composites in Worldview

Kicking off Development of New Earth Observation Solutions

Wildland Fires in Georgia

Featured Data Tools

Earthdata Search

Earthdata GIS

GUARDIAN

Open Science

Earth Science Data Systems 2025 Fiscal Year Highlights

Explore Learning Resources

Data in Action

Data Recipes

Tutorials

Webinars

Your Gateway to NASA Earth Observation Data

Data Catalog

Data Tools

Data Alerts and Outages

Browse Data by Topic

New on Earthdata

Featured Data Tools

Open Science

Earth Science Data Systems 2025 Fiscal Year Highlights

Data in Action

Data Recipes

Tutorials

Webinars

Your Gateway to NASA  Earth Observation Data