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NASA’s EMIT Will Map Tiny Dust Particles to Study Big Climate Impacts
Credit: NASA/JPL-Caltech
Storm Chasing Scientists Fly Into the Clouds to Understand Winter Snowstorms
NASA’s storm-chasing planes fly through blizzards to improve snowfall forecasts
‘Rocked’: NASA scientists brave bumpy flights into winter storms
A BIOS Treasure: The Tudor Hill Marine Atmospheric Observatory
by: Bermuda Institute of Ocean Sciences
TEMPO Air Pollution Sensor Integrated with Satellite Host
Credits: Image courtesy of Maxar
An air quality sensor that will dramatically improve the way scientists measure air pollution over North America has been joined with its satellite host.
NASA’s Tropospheric Emissions: Monitoring of Pollution (TEMPO) instrument was integrated with Intelsat 40e by Maxar’s Space Program Delivery team in Palo Alto, California. From its geostationary orbit — a high Earth orbit that allows satellites to match Earth’s rotation — TEMPO will take hourly daytime observations of air quality over an area that extends from Puerto Rico to northern Canada, from the Atlantic to the Pacific, encompassing the entire continental United States.
“Because of the hard work and dedication of the entire TEMPO team including our Maxar, Intelsat, and Ball Aerospace partners, we are excited to have completed this significant step toward launching with the IS40e spacecraft ” said Kevin Daugherty, TEMPO project manager at NASA’s Langley Research Center in Hampton, Virginia. “We are looking forward to completing the instrument integration and spacecraft testing in the coming months bringing us closer to delivery of TEMPO’s critical air quality science.”
Air pollution — including ozone, nitrogen dioxide and formaldehyde, and tiny atmospheric particles called aerosols — can have serious consequences for human health and the environment.
Currently scheduled to launch in 2022, TEMPO will also form part of an air quality satellite “virtual constellation” that will offer a more holistic view of how pollution is transported around the Northern Hemisphere. Ball Aerospace in Broomfield, Colorado built the TEMPO instrument.
Kelly Chance, of the Smithsonian Astrophysical Observatory in Cambridge, Massachusetts, is the principal investigator for TEMPO.
NASA Langley Research Center Last Updated: Dec 1, 2021 Editor: Joe Atkinson
https://www.nasa.gov/feature/langley/tempo-air-pollution-sensor-integrated-with-satellite-host
Preparing for Landing: NASA’s S-MODE Wraps up Last Week of Experiments
By Dragana Perkovic-Martin, Principal Investigator for DopplerScatt at NASA’s Jet Propulsion Laboratory // SOUTHERN CALIFORNIA //
11/02/21
Yesterday was a hard down day for the team – everyone needed a rest after a very active week before. The hard down days are in NASA airborne rules and ensure that fatigue does not set in and keep everyone’s safety the top priority.
Spooky! NASA King Air B200 and the early morning fog at NASA Ames Research Center. Photo credit: Alex Wineteer / NASA JPL
To fly or not to fly … Today is supposed to be a good day for optical measurements but the pesky fog is really not willing to leave the area of S-MODE operations. We sit and wait for updates from the ship, satellite imagery and forecasts. In the meantime, we are using the Saildrone measurements of wind speed in the area of interest to determine if it’s worthwhile to operate DopplerScatt. The winds are very low. The hourly reports are telling us that the winds have been below DopplerScatt’s threshold for the whole morning, reporting wind speeds of one meter per second. At this wind speed the ocean surface is very still, so still that it may look like a mirror. This is bad news for radar signals bouncing off the surface as their strength depends on the surface roughness. No dice for DopplerScatt today, and the same decision was made for the MOSES and MASS instruments on the Twin Otter.
11/03/21
Remember that pesky problem with the monitor from last week? I overnighted a replacement monitor for the DopplerScatt team since yesterday was a doozy with no flights, they decided to swap out the monitor and keyboard on the plane. Trouble is they did not test that it worked. We just thought, “well what could go wrong, it’s the same model.” What do you know, it did go wrong! I’ll spare you the details and the frantic messaging between myself and the operators, but after some time they realized that the power cable was not plugged in and the monitor was not getting power. All in a day of DopplerScatt deployments!
Crew of the day from left to right: Karthik Srinivasan (JPL DopplerScatt operator), Hernan Posada (AFRC pilot), Jeroen Molemaker (UCLA MOSES operator), James Less (AFRC pilot). Photo credit: Alex Wineteer / NASA JPL
11/04/21
Today is a science extravaganza! We have a big day ahead of us with two NASA King Air B200 flights planned and all of the in-water assets sampling data throughout the day. The weather is finally cooperating and we have a clear yet windy day ahead of us. The plan today is to fly a morning flight – which just took off at 8am – and then another one leaving approximately 6 hours later and flying the exact same pattern. The comparison of data between the two will tell us about the daily variability of the ocean processes.
“This is one of the reasons why I am so excited about S-MODE,” said Hector Torres, DopplerScatt team member, operator and one of the main people responsible for simulating ocean processes. “The results based on theory and numerical simulations produced in the last five years are about to get confirmed or debunked today. Either way it will be a breakthrough!”
Flight one is now done! There were some pesky low clouds right in the area of collection that prevented MOSES from collecting quality data for half of the flight, but the second half was great. DopplerScatt data collection went as planned and data are churning already! We are seeing the first quick look data products trickle in as we watch the afternoon flight take off.
While the first flight was a bit difficult for our optical colleague running the MOSES system, Jeroen Molemaker from the University of California, Los Angeles, the afternoon was gloriously clear and provided a great opportunity for all airborne instruments to collect data at the same time.
Quick look composite image of the sea surface temperature as observed by the MOSES instrument on the November 4, 2021 afternoon flight. The tracks are overlaid on DopplerScatt derived surface current velocities from the morning flight, showing the spatial relationship between currents and density fields. The color scale blue to red has a range of 2°C. Credit: NASA’s S-MODE team / Jeroen Molemaker
Today the S-MODE pilot experiment operated as we envisioned many months ago, with all platforms sampling data throughout the day over the area of interest. The field experiment crew is tired but happy and the team is excited about the science that we will extract from this data set.
Goodnight moon. NASA King Air B200 on arrival at Moffett Field, California after a long day of flights. Photo credit: Alex Wineteer / NASA Jet Propulsion Laboratory
11/05/21
Today is the final day of the S-MODE pilot campaign. It’s a bittersweet feeling for me as it was so much fun to collaborate and coordinate daily activities with so many people. I will miss that, but I certainly will not miss the hectic calls of “we have a problem with …”
The NASA King Air B200 will fly in the afternoon collecting data in the western region of the S-MODE study area together with the Twin Otter aircraft. Meanwhile, our friends on the ship will start recovering the autonomous assets and make their way toward Newport, Oregon.
Trouble struck again as our GPS unit could not get itself aligned and produce a good navigation solution, requiring a power reset and making S-turns i.e. banking the aircraft left and right in succession. After this excitement things went smoothly for the rest of the flight. You never know what will go wrong during a field deployment, you just know that something will and you need to be prepared to react and fix things without letting the panic set in! Thankfully that is what happened today thanks to Alex Winteer, a DopplerScatt operator from NASA JPL. He performed a cool and collected power reset while in air!
Happy crew on their last flight of the S-MODE pilot campaign. On the left is Jeroen Molemaker (UCLA MOSES operator) and on the right is Alex Wineteer (JPL DopplerScatt operator). Photo credit: Karthik Srinivasan / NASA JPL
Now it is time to work on our post-deployment to do list and eagerly await results of data processing.
I will leave you with two short blurbs from DopplerScatt team members Alex and Karthik about their impressions of the pilot campaign.
“On most days, you don’t wake up looking forward to a boring day. As an instrument operator, a boring day during a deployment, however, is a different story. You look forward to sitting in a small round aluminum tube for 4.5 hours with nothing to do. That is a perfect day – a day when the radar just works. No last minute excitement of monitors not turning on (because someone unplugged it and forgot to plug it back in!) or the satellite phone connection not working. While the entire science team is excited about an action-packed day of coincident data collection, all the instrument operators look forward to is a day where everything just works as it should! Of course, sitting in an aluminum tube for many hours, staring out at the ocean with nothing to do makes you yearn for some excitement, but that is a fleeting thought until you get a text message via satellite link asking you to pay attention to the speed of the aircraft!”
– Karthik Srinivasan, NASA JPL DopplerScatt operator
“I’ve been on quite a few field deployments with DopplerScatt, but none quite as exciting – or as important—as this one. Indeed, such a coordinated effort consisting of multiple aircraft and many assets in the water has never been attempted, and the resulting science will lead to new understanding of our ocean, atmosphere and the climate system as a whole. On Thursday, we attempted two flights for the first time. I operated the first flight: crew brief at 6:30 AM with a takeoff time of 8 AM. Thankfully, our instrument operated normally, and we were able to fly a bit lower –under the clouds – to ensure MOSES could see the ocean surface with its infrared camera. We landed five hours later, at around 1 PM, and I immediately took our data back to our field processing center in the aircraft hangar to start crunching. In the meantime, Karthik took off for our second flight of the day. By the time I finished the first round of processing, it was 5 PM and Karthik was almost back from the second flight, so I went downstairs to welcome him back (and grab the data!). A few hours later, we had both flights processed to quick look data products and I was exhausted. Being just one person, a small part of a much larger mission, it can be easy to lose sight of why we do this, especially when the hours are long. But when the data started pouring in, my exhaustion was quickly replaced by excitement. We were seeing a dataset no one had ever seen before. With these two flights, we are able to not just see the sub-mesoscale structure of the ocean surface over a large area, but we could also see its evolution over time and how the atmosphere interacts with that evolution! There is much work to go in analyzing these data, especially in comparing the many other instruments to our DopplerScatt measurements, but I am grateful to play a part in that analysis, discovery and understanding.”
– Alex Wineteer, NASA JPL DopplerScatt operator
NASA Selects New Mission to Study Storms, Impacts on Climate Models
NASA has selected a new Earth science mission that will study the behavior of tropical storms and thunderstorms, including their impacts on weather and climate models. The mission will be a collection of three SmallSats, flying in tight coordination, called Investigation of Convective Updrafts (INCUS), and is expected to launch in 2027 as part of NASA’s Earth Venture Program.
NASA selected INCUS through the agency’s Earth Venture Mission-3 (EVM-3) solicitation that sought complete, space-based investigations to address important science questions and produce data of societal relevance within the Earth science field. NASA received 12 proposals for EVM-3 missions in March 2021. After detailed review by panels of scientists and engineers, the agency selected INCUS to continue into development.
“Every one of our Earth science missions is carefully chosen to add to a robust portfolio of research about the planet we live on,” said Thomas Zurbuchen, associate administrator for the agency’s Science Mission Directorate in Washington. “INCUS fills an important niche to help us understand extreme weather and its impact on climate models – all of which serves to provide crucial information needed to mitigate weather and climate effects on our communities.”
INCUS aims to directly address why convective storms, heavy precipitation, and clouds occur exactly when and where they form. The investigation stems from the 2017 Earth Science Decadal Survey by the National Academies of Sciences, Engineering, and Medicine, which lays out ambitious, but critically necessary, research and observation guidance.
“In a changing climate, more accurate information about how storms develop and intensify can help improve weather models and our ability to predict risk of extreme weather,” said Karen St. Germain, NASA’s Earth Science division director. “This information not only deepens our scientific understanding about the changing Earth processes, but can help inform communities around the world.”
Climate change is increasing the heat in the oceans and making it more likely that storms will intensify more often and more quickly, a phenomenon NASA scientists continue to study.
Storms begin with rapidly rising water vapor and air that create towering clouds primed to produce rain, hail, and lighting. The greater the mass of water vapor and air that is transported upward in the atmosphere, the higher the risk of extreme weather. This vertical transport of air and water vapor, known as convective mass flux (CMF), remains one of the great unknowns in weather and climate. Systematic CMF measurements over the full range of conditions would improve the representation of storm intensity and constrain high cloud feedbacks – which can add uncertainty – in weather and climate models.
The principal investigator for INCUS is Susan van den Heever at Colorado State University in Fort Collins. The mission will be supported by several NASA centers including the Jet Propulsion Laboratory in Southern California, Goddard Space Flight Center in Greenbelt, Maryland, Marshall Space Flight Center in Huntsville, Alabama, with key satellite system components to be provided by Blue Canyon Technologies, and Tendeg LLC, both in Colorado. The mission will cost approximately $177 million, not including launch costs. NASA will select a launch provider in the future.
NASA’s Earth Venture Program consists of science-driven, competitively selected, low-cost missions/investigations. This program provides opportunities for investment in innovative science to enhance our capability to better understand the current state of the Earth system and further improve predictions of future changes. The current Earth Venture program include full missions, satellite instruments for flights of opportunity, instruments for Earth science data record continuity, and sustained suborbital investigations.
For more information about NASA’s Earth science programs, visit: https://www.nasa.gov/earth
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NASA’s TROPICS Pathfinder Satellite Produces Global First Light Images and Captures Hurricane Ida
On August 8, NASA’s TROPICS Pathfinder satellite captured global first light images as well as a look inside the structure of Hurricane Ida before and after it made landfall.
The satellite launched on June 30, 2021 as the pathfinder – or test – satellite for NASA’s Time-Resolved Observations of Precipitation structure and storm Intensity with a Constellation of Smallsats (TROPICS) mission. The Pathfinder satellite provides an opportunity to test the technology, communication systems, and data processing before the six satellites comprising the TROPICS constellation launch in 2022. “[Pathfinder] is like a dress rehearsal of the mission,” said Bill Blackwell, the principal investigator for the TROPICS mission and a researcher at the Massachusetts Institute of Technology Lincoln Laboratory in Lexington, Massachusetts.
The future TROPICS constellation will orbit Earth in three planes, collecting temperature, water vapor, precipitation, and cloud ice measurements on a frequent, near-global scale to study storms and other meteorological events. The idea is that multiple satellites in spread out orbits will collect more frequent measurements around the globe, allowing scientists to study storms as they develop and then use the newly-acquired knowledge to improve forecasting capabilities. The TROPICS research team includes researchers from NASA, the National Oceanic and Atmospheric Administration (NOAA), and several universities and commercial partners.
“Early in the mission, the Pathfinder satellite has already demonstrated the usefulness of this data – especially the images of Hurricane Ida. We’re able to see a lot of features that we want to study with the TROPICS constellation,” said Blackwell.
Three images produced by the TROPICS Pathfinder satellite using different frequencies.
The TROPICS Pathfinder satellite captured its first global data on August 8, 2021, including a channel around 205 GHz (top). It’s the first time a frequency higher than 190 GHz has been used on a space-borne microwave cross-track sounder instrument, which collects temperature and water vapor data using microwave radiance observations.
Credits: NASA / TROPICS Pathfinder satellite
The global first light images show microwave data collected at several frequencies, each giving scientists a different piece of the larger puzzle of thermodynamics in Earth’s atmosphere. The image, comprised of 91 GHz data, shows water vapor, including swirls of atmospheric moisture over the ocean. The data from the 115 GHz frequency provides measurements of temperature at Earth’s surface and in the lower atmosphere. The 205 GHz data yields measurements of the precipitation-sized ice particles contained within clouds. “This is the first time we’ve flown a microwave cross-track sounder using that high of a frequency,” said Blackwell. The microwave cross-track sounder is an instrument that collects temperature and water vapor data using microwave radiance observations. “It’s very sensitive to observe ice in the cloud tops, which can give us an indication of the intensity of a storm.”
TROPICS Pathfinder also captured images of Hurricane Ida on August 28 and 29, just before and after the storm made landfall in Louisiana. Read the full story about these images on the NASA Applied Sciences website.
Images of Hurricane Ida before landfall (left) show a well-defined eye of the storm, as well as inner and outer rainbands that persisted as the storm made landfall in Louisiana (right).
Images of Hurricane Ida before landfall (left) show a well-defined eye of the storm, as well as inner and outer rainbands that persisted as the storm made landfall in Louisiana (right).
Credits: NASA / TROPICS Pathfinder satellite
“What the constellation will give us that we don’t have today is higher revisit rates – so we’ll be able to observe storms from space at microwave frequencies much more frequently than we can now,” said Blackwell.
By Sofie Bates
NASA’s Earth Science News Team
Link to original article NASA’s TROPICS Pathfinder Satellite Produces Global First Light Images and Captures Hurricane Ida
