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By NASA
1 min read
Preparations for Next Moonwalk Simulations Underway (and Underwater)
During Aviation Day at NASA’s Glenn Research Center, researcher Will Banks, right, assists a student with the installation of his test article into a demonstration wind tunnel to gain a drag force measurement. Credit: NASA/Sara Lowthian-Hanna For students considering careers in STEM, the field of aviation offers diverse and abundant opportunities they may never have realized.
During Aviation Day on Aug. 27, NASA Glenn Research Center’s Office of STEM Engagement welcomed middle and high school students to the research center in Cleveland. The one-day event enabled students to learn more about the field of aviation and advancements in technology related to the aviation industry.
Test engineer Cecila Otero, left, explains factors to consider when testing inside the 1×1 Supersonic Wind Tunnel facility at NASA’s Glenn Research Center. Credit: NASA/Sara Lowthian-Hanna An aerodynamic drag challenge, virtual reality cockpit, and tours of icing and wind tunnel facilities were among the activities that connected students with NASA scientists and engineers working in aeronautics.
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By NASA
Earth Observer Earth Home Earth Observer Home Editor’s Corner Feature Articles Meeting Summaries News Science in the News Calendars In Memoriam More Archives 4 min read
Celebrating the First Earth Day Event at NASA Headquarters
Photo. Young attendees pose in front of the NASA Worm at the Earth Day celebration at NASA HQ. Photo credit: NASA Introduction
Organized by the Science Mission Directorate’s Science Support Office (SSO), NASA hosted its 12th annual Earth Day Celebration event from April 18–19, 2024. For the first time ever, the two-day event was held at NASA Headquarters (HQ) in Washington, DC.
The in-person event, which was free and open to the public, featured the newly installed Earth Information Center (EIC) exhibit – see Photos 1–4. The event featured 17 hands-on activities offered in NASA HQ’s East Lobby as well as two adjacent outdoor tents. Event participants were given an activity passport called the “Passport to Fun” listing all the activities and encouraging attendees to visit the stations and interact with NASA staff – see Figure 1. After completing six or more activities, attendees were able to claim giveaway items, e.g., lenticulars, NASA bags, posters, and calendars.
Photos 1–3. Student attendees at the Earth Information Center (EIC) interactive exhibit. Photo credits: NASA Photos 1–3. Student attendees at the Earth Information Center (EIC) interactive exhibit. Photo credits: NASA Photos 1–3. Student attendees at the Earth Information Center (EIC) interactive exhibit. Photo credits: NASA
Photo 4. Mark Subbarao [GSFC—Scientific Visualization Studio Lead] engages attendees with NASA science in front of the EIC Hyperwall. Photo credit: NASA Figure 1. Earth Day Activity Passport. Figure credit: NASA Prior to the event, Trena Ferrell [GSFC—Earth Science Education and Public Outreach Lead] arranged for groups of students from several local schools to visit the NASA Earth Day event. This included over 300 students from DuVal High School, Morgan State University, Howard University, Prince George’s County Environmental Academy, Prince George’s County Virtual Academy, International Hispanic School, and homeschoolers. On April 19, all of the students who were present at that time gathered for a plenary in the Webb Auditorium. Ferrell welcomed the attendees and provided introductions to prepare them for a virtual presentation by former NASA astronaut Paul Richards, who interacted with attendees and answered questions for roughly 20 minutes.
After Richard’s presentation, the attendees heard from Karen St. Germain [NASA HQ—Director of NASA’s Earth Science Division], whose in-person remarks emphasized to the students the crucial albeit less publicized studies that NASA does of our home planet. Related to this year’s Earth Day theme, “Water Touches Everything,” she discussed the ability of NASA’s Earth observing satellites to track water in all its forms as it circulates throughout the Earth system. St. Germain then answered questions from the audience for 15 minutes – see Photos 5–8.
Photo 5.Trena Ferrell [GSFC—Earth Science Education and Public Outreach Lead] welcomed student attendees to the Earth Day event. Photo credit: NASA Photos 6–7. Former NASA astronaut Paul Richards takes audience questions at the NASA Earth Day event. Photo credit: NASA Photos 6–7. Former NASA astronaut Paul Richards takes audience questions at the NASA Earth Day event. Photo credit: NASA Photo 8. Karen St. Germain [NASA Headquarters—Director of NASA’s Earth Science Division] provided remarks and answered student questions in the Webb Auditorium. Photo credit: NASA
NASA Administrator Bill Nelson visited the event on April 19, accompanied by Karen St. Germain and several NASA staff members who guided him as he explored the activities offered – see Photos 9–10.
Photo 9. NASA Administrator Bill Nelson [center, rear] spent time circulating among the NASA Earth Day hands-on activities. Here, he visits the “Measuring Light the Landsat Way” activity station, where Mike Taylor [GSFC/Science Systems and Applications, Inc.—Landsat Outreach Team] [left] explains how Landsat utilizes the electromagnetic spectrum and spectral signatures to better understand Earth. Photo credit: NASA Photo 10. [Left to right] Faith McKie [Acting NASA Press Secretary], Bill Nelson, Karen St. Germain, and Tom Wagner [Associate Director for Earth Action in the Earth Science Division of NASA’s Science Mission Directorate] during the Earth Day media briefing. Photo credit: NASA
Throughout the two-day event, it is estimated that as many as 1500 public participants attended along with the 300 students already discussed. While SSO staff distributed 500 activity passports, many small groups and families shared a single passport. SSO staff estimates that the true number of participants may be close to 1500 – see Photos 11–19.
Photo 11. A young Earth Day participant interacts with Ellen Gray [NASA GSFC—Earth Science News Team]. Photo credit: NASA Photo 12. Jenny Mottar [NASA HQ—Art Director for the Science Mission Directorate] and Kevin Miller [GSFC—SSO Senior Graphic Designer] hand out “Water Touches Everything” NASA Earth Day posters to student attendees. Photo credit: NASA Photos 13. Ross Walter [GSFC—Data Visualizer and Animator, Landsat Outreach Team] engages with students at the “Viewing Earth From Above with Landsat” station. Photo credit: NASA Photos 14. Students explore the Chesapeake Bay as seen by Landsat 8 with a large, vinyl floor mat. Photo credit: NASA Photo 15. Students play a Global Ecosystem Dynamics Investigation (GEDI) Jeopardy game at the “GEDI Knights Measure Forests from Space” table. Photo credit: NASA Photo 16. Student attendees make ultraviolet-bead bracelets and Helio Big Year buttons at the Heliophysics station. Photo credit: NASA Photo 17. Young attendees engage with Valerie Casasanto [GSFC—Ice, Cloud, and land Elevation Satellite-2 (ICESat-2) Outreach Lead], who helps them work on a three-dimensional glacier puzzle at the “ICESat-2: Ice, Trees, and Earth Height, If You Please!” station. Photo credit: NASA Photo 18. Young attendees engage with the “Meteorite Map Challenge.” Photo credit: NASA Photo 19. Dorian Janney [GSFC—GPM Outreach Specialist] engages visitors at the “Connect the Drops” station, where visitors learn how and why measuring global precipitation helps us better understand our home planet. Photo credit: NASA
Conclusion
NASA’s first Earth Day Celebration at NASA Headquarters was quite successful. While attendance was lower than previous events held at the more heavily trafficked Union Station or the National Mall, there was a steady stream of people throughout the exhibit on both days. It was also a great opportunity to showcase the new EIC to the public. Earth Day is the largest event organized annually by the SSO. This event requires months of planning, cross-divisional coordination, and intensive design of the hands-on activities – all carried from conceptualization through numerous revisions to implementation by more than 100 individuals from across the agency. This combined effort of SSO staff and assisting organizations results in an event that brings together thousands of visitors from a broad spectrum of ages and backgrounds to enjoy NASA science. This event would not have been possible were it not for the incredible efforts and collaboration put forth by so many of NASA’s outreach professionals. The SSO is grateful for all who helped to make this year’s Earth Day event a success and looks forward to Earth Day 2025.
Dalia Kirshenblat
NASA’s Goddard Space Flight Center/Global Science & Technology, Inc. (GSFC/GST)
dalia.p.zelmankirshenblat@nasa.gov
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Last Updated Sep 17, 2024 Related Terms
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By NASA
5 min read
Preparations for Next Moonwalk Simulations Underway (and Underwater)
This bar graph shows GISTEMP summer global temperature anomalies for 2023 (shown in yellow) and 2024 (shown in red). June through August is considered meteorological summer in the Northern Hemisphere. The white lines indicate the range of estimated temperatures. The warmer-than-usual summers continue a long-term trend of warming, driven primarily by human-caused greenhouse gas emissions. NASA/Peter Jacobs The agency also shared new state-of-the-art datasets that allow scientists to track Earth’s temperature for any month and region going back to 1880 with greater certainty.
August 2024 set a new monthly temperature record, capping Earth’s hottest summer since global records began in 1880, according to scientists at NASA’s Goddard Institute for Space Studies (GISS) in New York. The announcement comes as a new analysis upholds confidence in the agency’s nearly 145-year-old temperature record.
June, July, and August 2024 combined were about 0.2 degrees Fahrenheit (about 0.1 degrees Celsius) warmer globally than any other summer in NASA’s record — narrowly topping the record just set in 2023. Summer of 2024 was 2.25 F (1.25 C) warmer than the average summer between 1951 and 1980, and August alone was 2.34 F (1.3 C) warmer than average. June through August is considered meteorological summer in the Northern Hemisphere.
“Data from multiple record-keepers show that the warming of the past two years may be neck and neck, but it is well above anything seen in years prior, including strong El Niño years,” said Gavin Schmidt, director of GISS. “This is a clear indication of the ongoing human-driven warming of the climate.”
NASA assembles its temperature record, known as the GISS Surface Temperature Analysis (GISTEMP), from surface air temperature data acquired by tens of thousands of meteorological stations, as well as sea surface temperatures from ship- and buoy-based instruments. It also includes measurements from Antarctica. Analytical methods consider the varied spacing of temperature stations around the globe and urban heating effects that could skew the calculations.
The GISTEMP analysis calculates temperature anomalies rather than absolute temperature. A temperature anomaly shows how far the temperature has departed from the 1951 to 1980 base average.
New assessment of temperature record
The summer record comes as new research from scientists at the Colorado School of Mines, National Science Foundation, the National Atmospheric and Oceanic Administration (NOAA), and NASA further increases confidence in the agency’s global and regional temperature data.
“Our goal was to actually quantify how good of a temperature estimate we’re making for any given time or place,” said lead author Nathan Lenssen, a professor at the Colorado School of Mines and project scientist at the National Center for Atmospheric Research (NCAR).
This visualization of GISTEMP monthly temperatures with the seasonal cycle derived from the Global Modeling and Assimilation Office’s MERRA-2 model compares 2023 (in red) and 2024 (in purple), with a transparent ribbon around each indicating the confidence intervals from the new GISTEMP uncertainty calculation. The white lines show monthly temperatures from the years 1961 to 2022. June, July, and August 2024 combined were about 0.2 degrees Fahrenheit (about 0.1 degrees Celsius) warmer globally than any other summer in NASA’s record — narrowly topping the record set in 2023.NASA/Peter Jacobs/Katy Mersmann The researchers affirmed that GISTEMP is correctly capturing rising surface temperatures on our planet and that Earth’s global temperature increase since the late 19th century — summer 2024 was about 2.7 F (1.51 C) warmer than the late 1800s — cannot be explained by any uncertainty or error in the data.
The authors built on previous work showing that NASA’s estimate of global mean temperature rise is likely accurate to within a tenth of a degree Fahrenheit in recent decades. For their latest analysis, Lenssen and colleagues examined the data for individual regions and for every month going back to 1880.
Estimating the unknown
Lenssen and colleagues provided a rigorous accounting of statistical uncertainty within the GISTEMP record. Uncertainty in science is important to understand because we cannot take measurements everywhere. Knowing the strengths and limitations of observations helps scientists assess if they’re really seeing a shift or change in the world.
The study confirmed that one of the most significant sources of uncertainty in the GISTEMP record is localized changes around meteorological stations. For example, a previously rural station may report higher temperatures as asphalt and other heat-trapping urban surfaces develop around it. Spatial gaps between stations also contribute some uncertainty in the record. GISTEMP accounts for these gaps using estimates from the closest stations.
Previously, scientists using GISTEMP estimated historical temperatures using what’s known in statistics as a confidence interval — a range of values around a measurement, often read as a specific temperature plus or minus a few fractions of degrees. The new approach uses a method known as a statistical ensemble: a spread of the 200 most probable values. While a confidence interval represents a level of certainty around a single data point, an ensemble tries to capture the whole range of possibilities.
The distinction between the two methods is meaningful to scientists tracking how temperatures have changed, especially where there are spatial gaps. For example: Say GISTEMP contains thermometer readings from Denver in July 1900, and a researcher needs to estimate what conditions were 100 miles away. Instead of reporting the Denver temperature plus or minus a few degrees, the researcher can analyze scores of equally probable values for southern Colorado and communicate the uncertainty in their results.
What does this mean for recent heat rankings?
Every year, NASA scientists use GISTEMP to provide an annual global temperature update, with 2023 ranking as the hottest year to date.
Other researchers affirmed this finding, including NOAA and the European Union’s Copernicus Climate Change Service. These institutions employ different, independent methods to assess Earth’s temperature. Copernicus, for instance, uses an advanced computer-generated approach known as reanalysis.
The records remain in broad agreement but can differ in some specific findings. Copernicus determined that July 2023 was Earth’s hottest month on record, for example, while NASA found July 2024 had a narrow edge. The new ensemble analysis has now shown that the difference between the two months is smaller than the uncertainties in the data. In other words, they are effectively tied for hottest. Within the larger historical record the new ensemble estimates for summer 2024 were likely 2.52-2.86 degrees F (1.40-1.59 degrees C) warmer than the late 19th century, while 2023 was likely 2.34-2.68 degrees F (1.30-1.49 degrees C) warmer.
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Last Updated Sep 11, 2024 LocationGISS Related Terms
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