Climate Science - Blog Posts

That’s so awesome, I love Earth sm 🥹

I wonder if the red/pink oceans are related to iron banded formations (IBFs)…

"Genesis", Oil on canvas by Matthew Cornell

LaRue Burbank, mathematician and computer, is just one of the many women who were instrumental to NASA missions.

4 Little Known Women Who Made Huge Contributions to NASA

Women have always played a significant role at NASA and its predecessor NACA, although for much of the agency’s history, they received neither the praise nor recognition that their contributions deserved. To celebrate Women’s History Month – and properly highlight some of the little-known women-led accomplishments of NASA’s early history – our archivists gathered the stories of four women whose work was critical to NASA’s success and paved the way for future generations.

LaRue Burbank: One of the Women Who Helped Land a Man on the Moon

LaRue Burbank was a trailblazing mathematician at NASA. Hired in 1954 at Langley Memorial Aeronautical Laboratory (now NASA’s Langley Research Center), she, like many other young women at NACA, the predecessor to NASA, had a bachelor's degree in mathematics. But unlike most, she also had a physics degree. For the next four years, she worked as a "human computer," conducting complex data analyses for engineers using calculators, slide rules, and other instruments. After NASA's founding, she continued this vital work for Project Mercury.

In 1962, she transferred to the newly established Manned Spacecraft Center (now NASA’s Johnson Space Center) in Houston, becoming one of the few female professionals and managers there.  Her expertise in electronics engineering led her to develop critical display systems used by flight controllers in Mission Control to monitor spacecraft during missions. Her work on the Apollo missions was vital to achieving President Kennedy's goal of landing a man on the Moon.

Eilene Galloway: How NASA became… NASA

Eilene Galloway wasn't a NASA employee, but she played a huge role in its very creation. In 1957, after the Soviet Union launched Sputnik, Senator Richard Russell Jr. called on Galloway, an expert on the Atomic Energy Act, to write a report on the U.S. response to the space race. Initially, legislators aimed to essentially re-write the Atomic Energy Act to handle the U.S. space goals. However, Galloway argued that the existing military framework wouldn't suffice – a new agency was needed to oversee both military and civilian aspects of space exploration. This included not just defense, but also meteorology, communications, and international cooperation.

Her work on the National Aeronautics and Space Act ensured NASA had the power to accomplish all these goals, without limitations from the Department of Defense or restrictions on international agreements. Galloway is even to thank for the name "National Aeronautics and Space Administration", as initially NASA was to be called “National Aeronautics and Space Agency” which was deemed to not carry enough weight and status for the wide-ranging role that NASA was to fill.

Barbara Scott: The “Star Trek Nerd” Who Led Our Understanding of the Stars

A self-described "Star Trek nerd," Barbara Scott's passion for space wasn't steered toward engineering by her guidance counselor. But that didn't stop her!  Fueled by her love of math and computer science, she landed at Goddard Spaceflight Center in 1977.  One of the first women working on flight software, Barbara's coding skills became instrumental on missions like the International Ultraviolet Explorer (IUE) and the Thermal Canister Experiment on the Space Shuttle's STS-3.  For the final decade of her impressive career, Scott managed the flight software for the iconic Hubble Space Telescope, a testament to her dedication to space exploration.

Dr. Claire Parkinson: An Early Pioneer in Climate Science Whose Work is Still Saving Lives

Dr. Claire Parkinson's love of math blossomed into a passion for climate science. Inspired by the Moon landing, and the fight for civil rights, she pursued a graduate degree in climatology.  In 1978, her talents landed her at Goddard, where she continued her research on sea ice modeling. But Parkinson's impact goes beyond theory.  She began analyzing satellite data, leading to a groundbreaking discovery: a decline in Arctic sea ice coverage between 1973 and 1987. This critical finding caught the attention of Senator Al Gore, highlighting the urgency of climate change.

Parkinson's leadership extended beyond research.  As Project Scientist for the Aqua satellite, she championed making its data freely available. This real-time information has benefitted countless projects, from wildfire management to weather forecasting, even aiding in monitoring the COVID-19 pandemic. Parkinson's dedication to understanding sea ice patterns and the impact of climate change continues to be a valuable resource for our planet.

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Confirmed: Summer 2023 Hottest in NASA’s Record

All three months of summer 2023 broke records. July 2023 was the hottest month ever recorded, and the hottest July. June 2023 was the hottest June, and August 2023 was the hottest August.

NASA’s temperature record, GISTEMP, starts in 1880, when consistent, modern recordkeeping became possible. Our record uses millions of measurements of surface temperature from weather stations, ships and ocean buoys, and Antarctic research stations. Other agencies and organizations who keep similar global temperature records find the same pattern of long-term warming.

Global temperatures are rising from increased emissions of greenhouse gasses, like carbon dioxide and methane. Over the last 200 years, humans have raised atmospheric CO2 by nearly 50%, primarily through the burning of fossil fuels.

Drivers of climate change, both natural and human-caused, leave distinct fingerprints. Through observations and modeling, NASA researchers confirm that the current warming is the result of human activities, particularly increased greenhouse gas emissions.

How Climate Change Showed Up in 2021

2021 was tied for the sixth-hottest year since modern record keeping began. We work together with the National Oceanic and Atmospheric Administration to track temperatures around the world and study how they change from year to year.

For decades, the overall global temperature has been increasing because of human activities. The last decade has been the warmest on record. Each individual year’s average temperature, however, can be affected by things like ocean circulation, volcanic eruptions, and specific weather events.

For instance, last year we saw the beginning of La Niña – a pattern of cooler waters in the Pacific – that was responsible for slightly cooling 2021’s average temperature. Still, last year continued a long-term trend of global warming.

Globally, Earth’s temperature in 2021 was nearly 2°F warmer than the late 19th Century, for the seventh year in a row.

The Record

Studying 142 Years

Since 1880, we can put together a consistent record of temperatures around the planet and see that it was much colder in the late-19th century. Before 1880, uncertainties in tracking global temperatures are larger. Temperatures have increased even faster since the 1970s, the result of increasing greenhouse gases in the atmosphere.

Tracking Millions of Individual Observations

Our scientists use millions of individual observations of data from more than 20,000 weather stations and Antarctic research stations, together with ship- and buoy-based observations of sea surface temperatures, to track global temperatures.

Reviewing Multiple Independent Records

Our global temperature record – GISTEMP – is one of a number of independent global temperature records, all of which show the same pattern of warming.

The Consequences

Everywhere Experiences Climate Change Differently

As Earth warms, temperature changes occur unevenly around the globe. The Arctic is currently warming about four times faster than the rest of the planet – a process called Arctic amplification. Similarly, urban areas tend to warm faster than rural areas, partly because building materials like asphalt, steel and concrete retain heat.

Droughts and Floods in Warmer Weather

More than 88% of the Western US experienced drought conditions in 2021. At the same time, communities in Western Europe saw two months’ worth of rain in 24 hours, breaking records and triggering flash floods. Because a hotter climate means more water can be carried in the atmosphere, areas like the Western US suffer drought from the increased 'thirstiness' of the atmosphere, while precipitation events can become more extreme as the amount of moisture in the atmosphere rises.

Sea Levels Continue to Rise

Melting ice raises sea levels around the world, as meltwater drains into the ocean. In addition, heat causes the ocean water to expand. From 1993 to today, global mean sea level has been rising around 3.4 millimeters per year. In 2021, sea level data from the recently launched NASA/ESA Sentinel-6 Michael Freilich mission became available to the public.

There is Hope

“This is not good news, but the fact that we are able to track this in real time and understand why it’s changing, and get people to notice why it’s changing and how we can change things to change the next trajectory, that gives me hope. Because we’re not in the dark here. We’re not the dinosaurs who are unaware the comet is coming. We can see the comet coming, and we can act.” – Dr. Gavin Schmidt, director of NASA GISS, where the global temperature record is calculated

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6 Ways NASA is Involved in Climate Science

When it comes to climate change, we play a unique role in observing and understanding changes to the planet. Thanks to NASA’s Earth observations and related research, we know our planet and its climate are changing profoundly. We also know human activities, like releasing carbon dioxide and methane into the atmosphere, are driving this change.

Not only do we make these observations, we help people and groups use this knowledge to benefit society. The work we do at NASA is critical to helping us understand the ways our planet is responding to increased temperatures.

Here are 6 ways that we are involved in climate science and informing decisions:

1. Monitoring Earth’s vital signs

Just like a doctor checks your vitals when you go in for a visit, here at NASA we are constantly monitoring Earth’s vital signs - carbon dioxide levels, global temperature, Arctic sea ice minimum, the ice sheets and sea level, and more.

We use satellites in space, observations from airplanes and ships, and data collected on the ground to understand our planet and its changing climate. Scientists also use computers to model and understand what's happening now and what might happen in the future.

People who study Earth see that the planet’s climate is getting warmer. Earth's temperature has gone up more than 1 degree Celsius (~2 degrees Fahrenheit) in the last 100 years. This may not seem like much, but small changes in Earth's temperature can have big effects. The current warming trend is of particular significance, because it is predominantly the result of human activity since the mid-20th century and is proceeding at an unprecedented rate.

People drive cars. People heat and cool their houses. People cook food. All those things take energy. Human-produced greenhouse gas emissions are largely responsible for warming our planet. Burning fossil fuels -- which includes coal, oil, and natural gas -- releases greenhouse gases such as carbon dioxide into the atmosphere, where they act like an insulating blanket and trap heat near Earth’s surface.

At NASA, we use satellites and instruments on board the International Space Station to confirm measurements of atmospheric carbon levels. They’ve been increasing much faster than any other time in history.

2. Tracking global land use and its impacts 

We also monitor and track global land use. Currently, half the world's population lives in urban areas, and by 2025, the United Nations projects that number will rise to 60%. 

With so many people living and moving to metropolitan areas, the scientific world recognizes the need to study and understand the impacts of urban growth both locally and globally. 

The International Space Station helps with this effort to monitor Earth. Its position in low-Earth orbit provides variable views and lighting over more than 90% of the inhabited surface of Earth, a useful complement to sensor systems on satellites in higher-altitude polar orbits. This high-resolution imaging of land and sea allows tracking of urban and forest growth, monitoring of hurricanes and volcanic eruptions, documenting of melting glaciers and deforestation, understanding how agriculture may be impacted by water stress, and measuring carbon dioxide in Earth’s atmosphere.

3. Research into the causes of climate change

Being able to monitor Earth’s climate from space also allows us to understand what’s driving these changes.

With the CERES instruments, which fly on multiple Earth satellites, our scientists measure the Earth’s planetary energy balance – the amount of energy Earth receives from the Sun and how much it radiates back to space. Over time, less energy being radiated back to space is evidence of an increase in Earth’s greenhouse effect. Human emissions of greenhouse gases are trapping more and more heat.

NASA scientists also use computer models to simulate changes in Earth’s climate as a result of  human and natural drivers of temperature change.

These simulations show that human activities such as greenhouse gas emissions, along with natural factors, are necessary to simulate the changes in Earth’s climate that we have observed; natural forces alone can’t do so.

4. Research into the effects of climate change

Global climate change has already had observable effects on the environment. Glaciers and ice sheets have shrunk, ice on rivers and lakes is breaking up earlier, plant and animal ranges have shifted, and trees are flowering sooner.

The effects of global climate change that scientists predicted are now occurring: loss of sea ice, accelerated sea level rise and longer, more intense heat waves.

Climate modelers have predicted that, as the planet warms, Earth will experience more severe heat waves and droughts, larger and more extreme wildfires, and longer and more intense hurricane seasons on average. The events of 2020 are consistent with what models have predicted: extreme climate events are more likely because of greenhouse gas emissions.

Plants are also struggling to keep up with rising carbon dioxide levels. Plants play a key role in mitigating climate change. The more carbon dioxide they absorb during photosynthesis, the less carbon dioxide  remains trapped in the atmosphere where it can cause temperatures to rise. But scientists have identified an unsettling trend – 86% of land ecosystems globally are becoming progressively less efficient at absorbing the increasing levels of carbon dioxide from the atmosphere.

Helping organizations to use all the data and knowledge NASA generates is another part of our job. We’ve helped South Dakota fight West Nile Virus, helped managers across the Western U.S. handle water, helped The Nature Conservancy protect land for shorebirds, and others. We also support developing countries as they work to address climate and other challenges through a 15-year partnership with the United States Agency for International Development.

5. Action on sustainability

Sustainability involves taking action now to enable a future where the environment and living conditions are protected and enhanced. We work with many government, nonprofit, and business partners to use our data and modeling to inform their decisions and actions. We are also working to advance technologies for more efficient flight, including hybrid-electric propulsion, advanced materials, artificial intelligence, and machine learning. 

These advances in research and technology will not only bring about positive changes to the climate and the world in which we live, but they will also drive the economic engine of America and our partners in industry, to remain the world-wide leader in flight development.  

We partner with the private sector to facilitate the transfer of our research and NASA-developed technologies. Many innovations originally developed for use in the skies above help make life more sustainable on Earth. For example:

Our Earth-observing satellites help farmers produce more with less water.

Expertise in rocket engineering led to a technique that lessens the environmental impact of burning coal.

A fuel cell that runs equipment at oil wells reduces the need to vent greenhouse gases.

6. Applying climate research to preserve NASA centers in coastal areas

Sea level rise in the two-thirds of Earth covered by water may jeopardize up to two-thirds of NASA's infrastructure built within mere feet of sea level.

Some NASA centers and facilities are located in coastal real estate because the shoreline is a safer, less inhabited surrounding for launching rockets. But now these launch pads, laboratories, airfields, and testing facilities are potentially at risk because of sea level rise. We’ve worked internally at NASA to identify climate risks and support planning at our centers.

NASA Climate Science

Climate change is one of the most complex issues facing us today. It involves many dimensions – science, economics, society, politics, and moral and ethical questions – and is a global problem, felt on local scales, that will be around for decades and centuries to come. With our Eyes on the Earth and wealth of knowledge on the Earth’s climate system and its components, we are one of the world’s experts in climate science.

Visit our Climate site to explore and learn more.

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One Hot Year after Another

Globally, 2020 was the hottest year on record, effectively tying 2016, the previous record. Overall, Earth’s average temperature has risen more than 2 degrees Fahrenheit since the 1880s.

Temperatures are increasing due to human activities, specifically emissions of greenhouse gases, like carbon dioxide and methane. 

Heat and the energy it carries are what drive our planet: winds, weather, droughts, floods, and more are expressions of heat. The right amount of heat is even one of the things that makes life on Earth possible. But too much heat is changing the way our planet’s systems act.

My World’s on Fire

Higher temperatures drive longer, more intense fire seasons. As rain and snowfall patterns change, some regions are getting drier and more vulnerable to damage, setting the stage for more fires.

2020 saw several record-breaking fires, both in Australia in the beginning of the year, and in the western U.S. through northern summer and fall. Smoke from fires in both regions reached so high into the atmosphere that it formed clouds and continues to travel around the globe today.

In the Siberian Arctic, unusually high temperatures helped drive at least 19 fires in the region. More than half of them were burning peat soil -- decomposed organic materials -- that stores a lot of carbon. Peat fires release vast amounts of carbon into the atmosphere, potentially leading to even more warming.

The Water’s Getting Warm

It wasn’t just fire seasons setting records. 2020 had more named tropical storms in the Atlantic and more storms making landfall in the U.S. than any hurricane season on record.

Hurricanes rely on warm ocean water as fuel, and this year, the Atlantic provided. 30 named storms weren’t the only things that made this year’s hurricane season notable.

Storms like Eta, Delta, and Iota quickly changed from smaller, weaker tropical storms into more destructive hurricanes. This rapid intensification is complicated, but it’s likely that warmer, more humid weather -- a result of climate change -- helps drive it.

The Ice Is Getting Thin

Add enough heat, and even the biggest chunk of ice will melt. That’s true whether we’re talking about the ice cubes in your glass or the vast sheets of ice at our planet’s poles. Right now, the Arctic region is warming about three times faster than the rest of our planet, which has some major effects both locally and globally.

This year, Arctic sea ice hit a near-record low. Sea ice is actually made of frozen ocean water, and it grows and thaws with the seasons, typically reaching an annual minimum extent in September.

Warmer ocean water led to more ice melting this year, and 2020’s annual minimum extent continued a long trend of shrinking Arctic sea ice extent.

A Long Trend

We study Earth and how it’s changing from the ground, the sky, and space. Using data from sensors all around the planet, we calculate the global average temperature, working with our partners at NOAA.

Many other organizations also track global temperature using their own instruments and methods, and they all match remarkably well. The last seven years were the hottest seven years on record. Earth is getting warmer.

We also study the effects of increasing temperatures, like the melting sea ice and longer fire seasons mentioned above. Additionally, we can study the cause of climate change from space, with a bird’s eye view of increasing carbon in the atmosphere.

The planet is changing because of human activities. We’re working together with other agencies to monitor changes and understand what this means for people in the future.

Make sure to follow us on Tumblr for your regular dose of space: http://nasa.tumblr.com.

Are there any parts of the Earth still left unexplored?

Satellite Data in Ag-tion: From Space to Your Plate

As Earth’s climate changes, some places are drying out and others are getting wetter, including the land that produces the food we eat. Farmers have to figure out how to adapt to changing climate conditions.

Our fleet of satellites has been watching over Earth for more than half a century. Some, like our joint Landsat mission with the U.S. Geological Survey (USGS), collect valuable data about the crops that make up our food supply and the water it takes to grow them.

Combining this wealth of satellite data with observations on the ground allows us to track how crop production changes over the years.

For example, this map shows how croplands have changed over the years to feed a growing population. The Agriculture Department (USDA) has used Landsat data since 2008 to track crops growing in the continental United States.

Agricultural scientists can even focus in on data for individual crops like corn, wheat and soybeans. They can look closely at regional crops, like citrus, that grow in only a few areas.

This nationwide view — provided by Landsat satellites orbiting 438 miles above Earth — is important to track the nation’s food supply. But with data from other satellites, like our ECOSTRESS instrument and ESA’s (the European Space Agency) Sentinel-2, agricultural scientists can monitor how healthy crops are in real time and predict when they’ll be ready to harvest.

In this false-color image of California farmland, red areas peak early in the season, whereas blue areas peak late. This information helps farmers watch over the plants in their fields, predict when they’ll be ready to harvest, and maximize crop production.

But while growing more and more crops sounds good, there can be challenges, like water. Especially when there’s not enough of it.

During California’s recent drought, just over 1 million acres of fertile farmland (shown in green) were fallow, or unused (red) in 2015. That’s nearly double the number of unused fields in 2011, the last year with normal rainfall before the drought.

Irrigating acres and acres of farmland takes lots of water. With remote sensing, scientists can track how irrigation fluctuates with climate change, new water management policies, or new technologies. Research like this helps farmers grow the most crops with the least amount of water.

As our climate changes, it’s more important than ever for farmers to have the knowledge they need to grow crops in a warming world. The data collected by our Earth-observing satellites help farmers learn about the planet that sustains us — and make better decisions about how to cultivate it.

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Moving at the Speed of Arctic Ice

Time-lapses taken from space can help track how Earth’s polar regions are changing, watching as glaciers retreat and accelerate, and ice sheets melt over decades.

Using our long data record and a new computer program, we can watch Alaskan glaciers shift and flow every year since 1972. Columbia Glacier, which was relatively stable in the 1970s, has since retreated rapidly as the climate continues to warm.

The Malaspina Glacier has pulsed and spread and pulsed again. The flashes and imperfect frames in these time-lapses result from the need for cloud-free images from each year, and the technology limitations of the early generation satellites.

In Greenland, glaciers are also reacting to the warming climate. Glaciers are essentially frozen rivers, flowing across land. As they get warmer, they flow faster and lose more ice to the ocean. On average, glaciers in Greenland have retreated about 3 miles between 1985 and 2018. The amount of ice loss was fairly consistent for the first 15 years of the record, but started increasing around 2000.

Warmer temperatures also affect Greenland farther inland, where the surface of ice sheets and glaciers melts, forming lakes that can be up to 3 miles across. Over the last 20 years, the number of meltwater lakes forming in Greenland increased 27% and appeared at higher elevations, where temperatures were previously too cold for melt.

Whether they're studying how ice flows into the water, or how water pools atop ice, scientists are investigating some of the many aspects of how climate affects Earth's polar regions. 

For more information, visit climate.nasa.gov.

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