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Highlights

Since 1989, the U.S. Global Change Research Program (USGCRP) has submitted annual reports to Congress called Our Changing Planet. The reports describe the status of USGCRP research activities, provide progress updates, and document recent accomplishments.

In particular, Our Changing Planet highlights progress and accomplishments in interagency activities. These highlights represent the broad spectrum of USGCRP activities that extend from Earth system observations, modeling, and fundamental research through synthesis and assessment, decision support, education, and public engagement.

International, Human Health

Supporting responses to climate-sensitive diseases

A participant using the GLOBE Observer app on their mobile device examines a magnified mosquito larva to determine if it is a disease-carrying species.

Interagency efforts are engaging citizens in forecasting and observation of mosquito threats.

Global Learning and Observations to Benefit the Environment (GLOBE) is an international science and education program that provides students and the public worldwide with the opportunity to participate in data collection and the scientific process and contribute meaningfully to our understanding of the Earth system and global environment. In 2017, the U.S. Department of State (DOS) partnered with NASA to leverage GLOBE in engaging hard-to-reach populations in...

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Observations, Land Use & Land Cover, Ecosystems & Biodiversity

Measuring ecosystem response to changing environments in Pacific Northwest forests

Scientists are combining satellite remote sensing and ground survey data to better understand the impacts of climate change and other disturbances on the health of Pacific Northwest forests and the...

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Human Health

Responding to the Zika outbreak

The Aedes aegypti mosquito is the primary vector for transmission of the Zika virus.

Interagency science investigated environmental influences on Zika transmission and helped support response efforts.

In February 2016, the World Health Organization declared the Zika outbreak spreading across the Americas since 2015 a Public Health Emergency of International Concern, based on Zika’s previously-unknown association with birth defects. The virus was first discovered in 1947 in Africa and had not previously been found in the Western Hemisphere. By February 2016, the outbreak had spread to 48 countries and territories in the...

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Mitigation, Agriculture & Food

Informing agricultural emissions management

Analysis of the costs and benefits of switching to paddy rice production suggests that farmers could increase profits while reducing greenhouse gas emissions. 

Drainage of organic soils for agriculture has resulted in widespread soil subsidence (sinkage relative to surrounding areas) and increased greenhouse gas emissions. The Sacramento-San Joaquin Delta in California, once an expansive wetland, was drained and converted to agricultural production in the mid-1800s, and has since experienced subsidence rates that are among the highest in...

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Modeling, Human Health

Understanding the health benefits of reducing aerosol pollution

Researchers found that reducing aerosol pollution can achieve both direct and indirect health benefits.

Atmospheric aerosols are tiny airborne particles that can dramatically affect the Earth’s climate through their influence on the flow of...

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Ecosystems & Biodiversity, Carbon Cycle

Assessing Alaska’s carbon resources

Spatial distribution of A, annual carbon loss and gain across upland Alaska 1950–2009 and B, historical fire scars from 2000–2009 among the five Landscape Conservation Cooperative (LCC) regions.

An assessment of carbon stocks in Alaska’s soils and vegetation helped set a baseline for monitoring future change.

Alaska’s soils and vegetation store vast quantities of carbon. Increases in temperature throughout the 21st century may increasingly expose these stores to loss from increased wildfire, permafrost thaw, and other changes that could turn Alaska’s ecosystems into a net...

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Ecosystems & Biodiversity, Carbon Cycle

Understanding carbon cycling in warming northern peatlands

Figure shows how methane production changes with temperature in (a) surface and (b) deep peat samples that were anaerobically (without oxygen) incubated

Researchers are experimentally warming northern peatlands to understand carbon cycling in the climate of the future. 

Northern peatlands hold large stocks of organic carbon in their soils that are vulnerable to release into the atmosphere as the...

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Observations, Modeling, Ecosystems & Biodiversity, Carbon Cycle, Arctic

Understanding carbon cycling in Arctic ecosystems

Map shows the average active layer thickness (ALT) at the end of the growing season for the Barrow, Alaska region that contains the NGEE Arctic study site.

Scientists are gaining new understanding of processes that control greenhouse gas emissions from Arctic permafrost, a potential driver of significant future warming.

Rapid warming in the Arctic is causing carbon-rich soils known as permafrost, previously frozen for millennia, to thaw. As thawing soils decompose, the...

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Observations, Land Use & Land Cover, Ecosystems & Biodiversity, Arctic

Detecting the drivers of forest change in Alaska and the Arctic

Using 29 years of data from Landsat satellites, researchers at NASA found extensive greening in the vegetation across Alaska and Canada.

Scientists are using satellites to collect detailed data on forest change in remote parts of Alaska and the Arctic.

Rapid warming in the Arctic and boreal regions of Alaska is affecting boreal forests and tundra ecosystems in a number of ways. Higher temperatures and changes in precipitation have led to a higher incidence of wildfire and increased tree mortality from ...

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Observations, Land Use & Land Cover, Ecosystems & Biodiversity, Arctic

Monitoring change in Alaskan forests

G-LiHT measurements for an area within Bonanza Creek Experimental Forest near Fairbanks, Alaska.

Scientists are using aerial and ground survey methods to measure change in Alaska’s interior forests and its impact on ecosystem services. 

The boreal forests of interior Alaska are changing rapidly as the climate warms. Wildfires are more frequent and more severe, and declines in growth of spruce trees...

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