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An extra-tropical cyclone seen in the Pacific Ocean off the coast of Japan on March 10, 2014, by NASA’s GPM Microwave Imager.Credit: NASA NASA’s Global Precipitation Measurement Mission: 10 years, 10 stories
From peering into hurricanes to tracking El Niño-related floods and droughts to aiding in disaster responses, the Global Precipitation Measurement (GPM) mission has had a busy decade in orbit. As the GPM mission team at NASA and the Japan Aerospace Exploration Agency (JAXA) commemorates its Feb. 27, 2014 launch, here are 10 highlights from the one of the world’s most advanced precipitation satellites.
First Images Available from NASA-JAXA Global Rain and Snowfall Satellite
Less than a month after launch, NASA and JAXA released the first images captured by the GPM Core Observatory. It measured precipitation falling inside a March 10, 2014, cyclone over the northwest Pacific Ocean, approximately 1,000 miles east of Japan.
Read the Full Article NASA Releases First Global Rainfall and Snowfall Map from New Mission
Combining data from a constellation of satellites that together observe every part of the world roughly every three hours, the GPM team mapped how rain and snow storms move around the planet. As scientists have worked to understand all the elements of Earth’s climate and weather systems – and how they could change in the future – GPM has provided comprehensive and consistent measurements of precipitation.
Read the Full Article GPM Satellite Sees First Atlantic Hurricane
The GPM Core Observatory flew over Hurricane Arthur five times between July 1 to 5, 2014 – the first time a precipitation-measuring satellite was able to follow a hurricane through its full life cycle with high-resolution measurements. In the July 3 image, Arthur was just off the coast of South Carolina. GPM data showed that the hurricane was asymmetrical, with spiral arms (rain bands) on the eastern side of the storm but not on the western side.
Read the Full Article NASA Working with Partners to Provide Response to Harvey
In 2017, NASA used assets and expertise from across the agency to help respond to Hurricane Harvey in southern Texas. The agency’s GPM mission team produced rainfall accumulation graphics and unique views of the structure of Harvey during various phases of development and landfall.
Read the Full Article Predicting Floods
Predicting floods is notoriously tricky, as the events depend on a complex mixture of rainfall, soil moisture, the recent history of precipitation, and much more. Snowmelt and storm surges can also contribute to unexpected flooding. With funding from NASA, researchers developed a tool that maps flood conditions across the globe.
Read the Full Article NASA, Pacific Disaster Center Increase Landslide Hazard Awareness
A NASA-based team built a new tool to examine the risk of landslides. They developed a machine learning model that combines data on ground slope, soil moisture, snow, geological conditions, distance to faults, and the latest near real-time precipitation data from NASA’s IMERG product (part of the GPM mission). The model has been trained on a database of historical landslides and the conditions surrounding them, allowing it to recognize patterns that indicate a landslide is likely.
Read the Full Article NASA Measures Raindrop Sizes From Space to Understand Storms
For the first time, scientists collected three-dimensional snapshots from space of raindrops and snowflakes around the world. With this detailed global dataset, scientists started to improve rainfall estimates from satellite data and in numerical weather forecast models. This is particularly helpful for understanding and preparing for extreme weather events.
This is a conceptual image showing how the size and distribution of raindrops varies within a storm. Blues and greens represent small raindrops that are 0.5-3mm in size. Yellows, oranges, and reds represent larger raindrops that are 4-6mm in size. A storm with a higher ratio of yellows, oranges, and reds will contain more water than a storm with a higher ratio of blues and greens.Credit: NASA Goddard Read the Full Article NASA Maps El Niño’s Shift on U.S. Precipitation
The GPM team amassed and analyzed data to show the various changes in precipitation across the United States due to the natural weather phenomenon known as El Niño.
Read the Full Article Using Satellites to Predict Malaria Outbreaks
University researchers turned to data from NASA’s fleet of Earth-observing satellites to track environmental events that typically precede a malaria outbreak. With NASA funding and a partnership with the Peruvian government, they worked to develop a system to help forecast potential malaria outbreaks down to the neighborhood level and months in advance. This gave authorities a tool to help prevent outbreaks from happening.
Read the Full Article Two Decades of Rain, Snowfall from NASA’s Precipitation Missions
NASA’s Precipitation Measurement Missions (PMM) – including GPM and the Tropical Rainfall Measurement Mission – have together collected rain and snowfall from space for more than 20 years. Since 2019, scientists have been able to access PMM’s multi-satellite record as one dataset.
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Night-Shining Cloud Mission Ends; Yields High Science Results for NASA
NASA’s Aeronomy of Ice in the Mesosphere (AIM) mission, seen in this visualization, contributed to NASA’s understanding of the region that borders between Earth’s atmosphere and space. NASA After 16 years studying Earth’s highest clouds for the benefit of humanity – polar mesospheric clouds – from its orbit some 350 miles above the ground, NASA’s Aeronomy of Ice in the Mesosphere, or AIM, mission has come to an end.
Initially slated for a two-year mission, AIM was extended numerous times due to its high science return. While AIM has faced hurdles over the years – from software hiccups to hardware issues – an incredibly dedicated team kept the spacecraft running for much longer than anyone could have anticipated. On March 13, 2023, the spacecraft’s battery failed following several years of declining performance. Multiple attempts to maintain power to the spacecraft were made, but no further data could be collected, so the mission has now ended.
“AIM was dedicated to studying the atmospheric region that borders between our atmosphere and space,” said AIM mission scientist Diego Janches, of NASA’s Goddard Space Flight Center in Greenbelt, Maryland. “AIM’s help understanding this region has been of critical importance to providing insights on how the lower atmosphere affects space weather.”
Known as night-shining or noctilucent clouds, they are seen at twilight in the summer months, typically at high latitudes near the North and South Poles. Before the mission, scientists knew these types of clouds varied with latitude, season, and solar activity, but didn’t know why. This mission was launched to understand the variations and study why the clouds form and their links to climate change by measuring the thermal, chemical, and other properties of the environment in which the clouds form.
Noctilucent clouds appeared in the sky above Edmonton, Alberta, in Canada on July 2, 2011. NASA/Dave Hughes “NASA’s AIM has been an incredibly successful mission,” said Scott Bailey, AIM principal investigator and professor at Virginia Tech. “It has answered core questions that have helped us understand how noctilucent clouds and atmospheric gravity waves vary over time and location.”
Over the years, AIM made many big discoveries. Data from the mission has thus far led to nearly 400 peer-reviewed publications. This includes findings on how these clouds can be created by meteor smoke and water vapor from rocket exhaust, how events near Earth’s surface can trigger changes in the clouds, and how ice high in the atmosphere can cause mysterious radar echoes, which are created in certain regions of the atmosphere during the summer.
As the mission progressed, scientists realized AIM’s data could also be used to study undulations in the air called atmospheric gravity waves. These waves transfer momentum and energy as they travel through the atmosphere. They link weather events at Earth’s surface with atmospheric disturbances that occur far away from the initial event, including in the uppermost part of the atmosphere where they can disrupt GPS signals.
“We’ve had many difficulties, but we’ve still gotten an incredible amount of data from AIM because of our really excellent, heroic, and hardworking team that comes through every time,” Bailey said.
AIM’s first hurdles started only months after launch in 2007, when the telecommunication receiver started to malfunction intermittently. With a clever use of radio signals, the team was able to reprogram the spacecraft to communicate in Morse code, which allowed it to maintain communications even after the receiver stopped working. While communication with the spacecraft became thousands of times slower than planned, AIM was still able to make its measurements and send home 99% of the data it collected.
Shortly thereafter, the spacecraft again encountered a mission-threatening issue. The spacecraft repeatedly sent itself into safe mode, which effectively shut down the spacecraft and required a time-consuming series of tasks to reboot. But again, the engineers were able to upload new software to the spacecraft to circumvent the issue and keep AIM functional. The new software patch has prevented over a thousand such incidents on the spacecraft since.
In 2019, AIM’s battery started to decline, but through great effort and ingenuity, the mission operations team maintained the battery power, enabling the spacecraft to continue returning data. In early 2023, the battery experienced a significant drop-off in performance which meant the spacecraft could not regularly receive commands or collect data. Unfortunately, this hardware issue was not one that could be repaired remotely, and the satellite finally ceased collecting data in March 2023.
“We’re saddened to see AIM reach the end of its lifetime, but it’s been amazing how long it has lasted,” Bailey said. “It’s given us more data and insight into noctilucent clouds and atmospheric gravity waves than we could ever have hoped for.”
Though the spacecraft has seen its last night-shining clouds, scientists will continue to study AIM’s data for years to come. As for the spacecraft itself, it will slowly lose orbital height and burn up upon atmosphere re-entry in 2026.
“There are still gigabytes upon gigabytes of AIM data to study,” said Cora Randall, AIM deputy principal investigator and senior research scientist at the Laboratory for Atmospheric and Space Physics in Boulder, Colorado. “And as our models and computational capabilities continue to improve, people will make many more discoveries using the AIM datasets.”
For more information about the mission, visit: https://go.nasa.gov/3TgIDwD
By Mara Johnson-Groh
NASA’s Goddard Space Flight Center, Greenbelt, Md.
Last Updated Mar 01, 2024 Related Terms
AIM (Aeronomy of Ice in the Mesosphere) Goddard Space Flight Center Heliophysics Heliophysics Division Mesosphere Science & Research The Sun Explore More
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By European Space Agency
Video: 00:07:30 Meet the people working on the testing of Ariane 6. Europe’s next rocket, Ariane 6, has passed all its qualification tests in preparation for its first flight, and now the full-scale test model will be removed from the launch pad to make way for the real rocket that will ascend to space.
To make way for launch, teams from ArianeGroup, France’s space agency CNES and ESA have started to remove the Ariane 6 test model by disconnecting the cables and fuel lines that pass through the launch tower.
Find out about the progress being made at the end of testing by the people who know Ariane 6 best. Featuring interviews with ESA’s launch system architect Pier Domenico Resta, CNES Inspector General Bernard Chemoul, CNES Ariane 6 project manager Olivier Bugnet, ESA Launch system engineer Frank Saingou, ArianeGroup system test program manager Valérie and ArianeGroup production engineering manager Lydia Amakoud.
Ariane 6 is an all-new design, created to succeed Ariane 5 as Europe's heavy-lift launch system. With Ariane 6's upper stage restart capability, Europe's launch capability will be tailored to the needs of multiple payload missions, for example to orbit satellite constellations. This autonomous capability to reach Earth orbit and deep space supports Europe's navigation, Earth observation, scientific and security programmes. Ongoing development of Europe's space transportation capabilities is made possible by the sustained dedication of thousands of talented people working in ESA's 22 Member States.
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