Lago de Cahora Bassa
Oct 14, 2019Lakes Worldwide Are Experiencing More-Severe Algal Blooms, 30-years of Landsat Data Shows

The intensity of summer algal blooms has increased over the past three decades, according to a first-ever global survey of dozens of large, freshwater lakes.

Baltimore City
Sep 5, 2019Hot in the City, And Hotter Still in Low-Income Areas

A new investigative report published by NPR has found that it’s hotter in cities’ low income areas.

Chlorophyll-a concentrations
Jun 21, 2019NASA Helps Warn of Harmful Algal Blooms in Lakes, Reservoirs

With limited resources to dedicate to monitoring for harmful algal blooms, water managers are looking to new technologies from NASA and its partners to detect and monitor potential hazards in lakes and reservoirs.

Copenhagen garden
May 22, 2019Green Space is Good for Mental Health, Landsat Helps Establish

The prolonged presence of green space is intrinsic for a healthy society a new nationwide Danish study finds.

a mature crop
Apr 4, 2019How Looking for Clouds Helped Forecast Global Food Production

It started as an algorithm to detect clouds in satellite imagery, but now the software is being used for everything from increasing food security in the developing world to guiding futures trading on Wall Street.

forest and shrub cover v. healthcare spending
Apr 1, 2019Green Space & Health: U.S. Counties with More Trees and Shrubs Spend Less on Healthcare

Each 1 percent of a county’s land that was covered in forest was associated with an average Medicare expenditure savings of $4.32 per person per year.

mudflat invertebrates sampling
Jan 28, 2019Loss of Intertidal Ecosystem Exposes Coastal Communities

The study used machine-learning to analyze more than 700,000 Landsat images to map changing global distribution of intertidal areas over a 30-year period.

growing city sizes
Dec 14, 2018As Cities Grow, So Does the Urban Growing Season

New insights on how vegetation phenology in urban and surrounding areas respond to urbanization.

secchi disk
Dec 12, 2018Retrieving Secchi Depth with Landsat 8

Landsat 8 allows for the acquisition of spectral data for monitoring water quality from lakes and drinking water reservoirs across the United States.

a smelly HAB
Oct 11, 2018Satellites on Toxic Algae Patrol

Increasingly, water managers are turning to satellites like Landsat to monitor inland waters.

Lake Sunapee algal bloom
May 30, 2018Landsat 8 as a Tool for Monitoring Algal Blooms

When algae blanket a lake’s surface, loss of sunlight and—eventually—oxygen, smothers aquatic life.

water quality map
Jan 26, 2018UNESCO Launches a Pioneering Tool to Monitor Water Quality

Using data from Landsat and Sentinel-2, UNESCO is providing freshwater quality information at the global scale.

map of study area
Sep 7, 2017Finding Baltimore’s Mosquito Hotspots with Help from Landsat

High levels of residential abandonment and unchecked vegetation growth in low-income neighborhoods are strong indicators of mosquito prevalence. Higher income neighborhoods are also susceptible to mosquito-borne disease due to the presence of irrigated vegetation, which creates mosquito-friendly habitat.

algal bloom in Lake Erie 2015
May 15, 2017How Landsat Data Led to a Breakthrough for Lake Erie Toxic Algal Blooms

With the growing frequency and magnitude of toxic freshwater algal blooms becoming an increasingly worrisome public health concern, Carnegie scientists Jeff Ho and Anna Michalak, along with colleagues, have made new advances in understanding the drivers behind Lake Erie blooms and their implications for lake restoration.

Yamouk River Valley
Dec 16, 2016Managing Water in Conflict-Torn Regions

Understanding the relationship between land use and river flows in the Yarmouk basin.

ducks
Jul 19, 2016Land Cover Matters: An Avian Flu Researcher Talks Landsat

We recently spoke with veterinary epidemiologist Todd Kelman from the University of Davis, California about his avian flu research. Todd has incorporated Landsat data into his research and we wanted to know more.

Preparing an optical profiler
Apr 25, 2016A Real-Life Bay Watch: NASA Helps Monitor LA Coastline

When a Los Angeles water treatment plant had to discharge treated water closer to shore than usual in the fall of 2015 due to repair work, NASA satellite observations helped scientists from the City of Los Angeles and local research institutions monitor the Santa Monica Bay for any impacts. For the city, it was an opportunity to assess the use of satellites in guiding a substantial monitoring effort. For NASA, it was an opportunity to refine the use of satellite assets to study a coastal environment.

Banaue rice terraces
Jan 11, 2016Future Grains

When global food prices spiked dramatically in late 2007 and into 2008, the costs of many basic dietary staples doubled or even tripled around the world, sparking protests and riots. Panicked governments stopped exporting food, aggravating the crisis.

Jan 5, 2016Mosquito Meets MODIS & Landsat: South Dakota Fights West Nile Virus

Source: NASA Video @ YouTube   Jan 5, 2016 • South Dakota is the U.S. hotspot for West Nile disease. Scientists and public health officials there developed a way to use environmental data from NASA satellites to forecast the risk of West Nile. They’re giving people working on preventing the disease an important new tool […]

installing water gages in Kenya
Dec 18, 2015Monitoring Small Surface Water Bodies in Africa

Naga Manohar Velpuri, works with the USGS Famine Early Warning Systems Network (FEWS NET). The project has recently initiated a large-scale project to monitor surface water bodies in the pastoral regions of Africa using multi-source satellite data and hydrologic modeling techniques. Currently, a total of 293 water points are being monitored in 10 countries. Velpuri shared some of the projects findings he presented at #AGU15.