remote sensing Archives - State of the Planet

Kytt MacManus, standing left, and Dorothee Grant, sitting right, look at a computer monitor as they study images of nightime lights data.

Bright Lights, Big Cities: An Intern Takes on the World of Remote Sensing

Intern Dorothee Grant is using daytime and nighttime lights satellite data to help map urban areas at large spatial scales.

by |October 1, 2019
Remotely-sensed image of a section of Central Park, New York City

High-Resolution Data Products Help Illuminate Urbanization’s Reach

High-resolution data on impervious surfaces and urban extents can shed new light on patterns of urban and rural development.

by |February 26, 2019
view of africa from space

Pictures Worth a Thousand Words: How Satellite Imagery is Improving Agriculture in Developing Countries

A partnership between two research institutes is helping to promote sustainable land-use practices in African nations.

by |July 18, 2018

Students Practice GIS and Remote-Sensing Field Work in Black Rock Forest

When it comes to learning about data collection techniques, there is no substitute for field work. In October, three Columbia classes embarked on a field trip to the Black Rock Forest in Cornwall, New York, to get some hands-on experience.

by |December 19, 2017

New Model Helps in Fight Against Deadly Parasitic Disease

IRI scientists and colleagues from South Africa are using satellites to detect seasonal water bodies that harbor schistosomiasis, the deadliest of the tropical neglected diseases.

by |August 3, 2017

Exploring Our Changing Earth, in Real Time

Lamont-Doherty Earth Observatory scientists are loading drones with high-tech instruments and using satellites and undersea cables that are interacting with sensors in some of the most remote locations on Earth to gather data in real time and uncover the secrets of our planet.

by |January 4, 2017
The first of six ALAMO floats parachutes into the Ross Sea off Antarctica to begin profiling the water. Their mission is to check for areas where warmer than normal water could put the Ross Ice Shelf at risk. Photo: Tej Dhakal/Lamont-Doherty Earth Observatory

Antarctica Has a New Explorer in the Water Near a Key Ice Shelf

The first of six ALAMO floats parachuted into the Ross Sea off Antarctica to begin profiling the water in a check for areas where warmer than normal water could put the Ross Ice Shelf at risk.

by |December 2, 2016
Figure of two images. The one of the left shows 2015 estimates of population density of a coastal region in Kenya from CIESIN’s Gridded Population of the World, version 4 (GPWv4), which is based on census data. On the right, New Facebook estimates of population density in the same coastal region in Kenya. This allocation, which is derived from processing of third party satellite imagery and incorporates GPWv4, provides a higher resolution map of population distribution.

Working with Facebook to Create Better Population Maps

Knowing how settlements are distributed across the landscape—e.g., in clusters, along roads or waterways, or scattered widely—has important implications for designing infrastructure, improving access, and promoting sustainability.

Map showing exposure to fine-particulate matter from 1999-2011

The Changing Face of Air Quality

Looking at regional differences in PM2.5 concentrations gives us a sense of the changing face of air quality throughout the world.

Map of hazards data points

Mapping Tool Lets Users Pinpoint Hazards Data

The SEDAC Hazards Mapper is designed for disaster risk managers, humanitarian response organizations, public health professionals, journalists and others needing a quick assessment of the potential dangers posed by a major hazardous event or developing emergency.