GlobalWarming & ClimateChange News Desk – Such high-tide flooding that inundates roads and buildings along the west coast of the Americas tends to be uncommon outside of El Niño years, but that could change by the 2030s.
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Ace Press News From Cutting Room Floor: Published: Dec.04: 2023: NASA Climate Change News: TELEGRAM Ace Daily News Link https://t.me/+PuI36tlDsM7GpOJe
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In Brief:
An analysis by NASA’s sea level change science team finds that if a strong El Niño develops this winter, cities along the western coasts of the Americas could see an increase in the frequency of high-tide flooding that can swamp roads and spill into low-lying buildings.
El Niño is a periodic climate phenomenon characterized by higher-than-normal sea levels and warmer-than-average ocean temperatures along the equatorial Pacific.
These conditions can spread poleward along the western coasts of the Americas. El Niño, which is still developing this year, can bring more rain than usual to the U.S. Southwest and drought to countries in the western Pacific like Indonesia. These impacts typically occur in January through March.
The NASA analysis finds that a strong El Niño could result in up to five instances of a type of flooding called a 10-year flood event this winter in cities including Seattle and San Diego.
Places like La Libertad and Baltra in Ecuador could get up to three of these 10-year flood events this winter. This type of flooding doesn’t normally occur along the west coast of the Americas outside of El Niño years. The researchers note that by the 2030s, rising seas and climate change could result in these cities experiencing similar numbers of 10-year floods annually, with no El Niño required.
“I’m a little surprised that the analysis found these 10-year events could become commonplace so quickly,” said Phil Thompson, an oceanographer at the University of Hawaii and a member of NASA’s sea level change science team, which performed the analysis. “I would have thought maybe by the 2040s or 2050s.”
Ten-year floods are those that have a one in 10 chance of occurring in any given year.
They’re a measure of how high local sea levels become: The extent of flooding in a particular city or community depends on several factors, including a region’s topography and the location of homes and infrastructure relative to the ocean. Ten-year floods can result in what the National Oceanic and Atmospheric Administration classifies as moderate flooding, with some inundation of roads and buildings, and the possible need to evacuate people or move belongings to higher ground.
NASA’s coastal flooding analysis finds that by the 2030s, during strong El Niño years, cities on the west coast of the Americas could see up to 10 of these 10-year flood events. By the 2050s, strong El Niños may result in as many as 40 instances of these events in a given year.
Watching Sea Levels Rise
Water expands as it warms, so sea levels tend to be higher in places with warmer water. Researchers and forecasters monitor ocean temperatures as well as water levels to spot the formation and development of an El Niño.
“Climate change is already shifting the baseline sea level along coastlines around the world,” said Ben Hamlington, a sea level researcher at NASA’s Jet Propulsion Laboratory in Southern California and lead for the agency’s sea level change science team.
Sea levels are rising in response to planetary warming, as Earth’s atmosphere and ocean are heating up and ice sheets and shelves melt. This has already increased the number of high-tide, or nuisance, flooding days coastal cities experience throughout the year. Phenomena like El Niños and storm surges, which temporarily boost sea levels, compound these effects.
Missions that monitor sea levels, including the Surface Water and Ocean Topography (SWOT) satellite and Sentinel-6 Michael Freilich, help to monitor El Niños in the near term. SWOT in particular, collects data on sea levels right up to the coast, which can help to improve sea level rise projections. That kind of information could aid policymakers and planners in preparing their communities for rising seas in the next decades: SWOT captures sea levels around the globe
“As climate change accelerates, some cities will see flooding five to 10 times more often. SWOT will keep watch on these changes to ensure coastal communities are not caught off guard,” said Nadya Vinogradova Shiffer, SWOT program scientist and director of the ocean physics program at NASA Headquarters in Washington.
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AceNewsDesk – The Thanksgiving holiday typically brings families and friends together in a celebration of common gratitude for all the good things that have happened during the previous year
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Ace Press News From Cutting Room Floor: Published: Nov.23: 2023: NASA News: TELEGRAM Ace Daily News Link https://t.me/+PuI36tlDsM7GpOJe
People celebrate the holiday in various ways, with parades, football marathons, and attending religious services, but food remains the over-arching theme. For astronauts embarked on long-duration space missions, separation from family and friends is inevitable and they rely on fellow crew members to share in the tradition and enjoy the culinary traditions as much as possible. In this most unusual of years when the pandemic may alter typical Thanksgiving gatherings, it seems appropriate to review how astronauts over the years have celebrated the holiday during their time in space. Enjoy the stories and photographs from orbital Thanksgiving celebrations over the years.
@acenewsservices Thanksgiving 1973. Left: Skylab 4 astronauts Gerald P. Carr, Edward G. Gibson, and William R. Pogue, the first crew to celebrate Thanksgiving in space. Right: Gibson, left, Pogue, and Carr demonstrate eating aboard Skylab.
Skylab 4 astronauts Gerald P. Carr, Edward G. Gibson, and William R. Pogue were the first crew to celebrate Thanksgiving in space on Nov. 22, 1973. On that day, their seventh of an 84-day mission, Gibson and Pogue completed a 6-hour and 33-minute spacewalk, while Carr remained in the Multiple Docking Adaptor with no access to food. All three made up for missing lunch by consuming two meals at dinner time, although neither included special items for Thanksgiving.
Thanksgiving 1985. Left: STS-61B payload specialists Charles D. Walker, left, and Rodolfo Neri Vela of Mexico enjoy the first Thanksgiving aboard a space shuttle in Atlantis’ middeck. Middle: The STS-61B crew enjoying their Thanksgiving dinner while floating in Atlantis’ middeck. Right: Mexican payload specialist Neri Vela, who introduced tortillas to space menus.
Twelve years passed before the next orbital Thanksgiving celebration. On Nov. 28, 1985, the seven-member crew of STS-61B, NASA astronauts Brewster H. Shaw, Bryan D. O’Connor, Jerry L. Ross, Mary L. Cleave, and Sherwood C. “Woody” Spring, and payload specialists Charles D. Walker from the United States and Rodolfo Neri Vela from Mexico, feasted on shrimp cocktail, irradiated turkey, and cranberry sauce aboard the space shuttle Atlantis. Neri Vela introduced tortillas to space menus, and they have remained favorites among astronauts ever since. Unlike regular bread, tortillas do not create crumbs, a potential hazard in weightlessness, and have multiple uses for any meal of the day. The crew of STS-33, NASA astronauts Frederick D. Gregory, John E. Blaha, Manley L. “Sonny” Carter, F. Story Musgrave, and Kathryn C. Thornton, celebrated Thanksgiving aboard space shuttle Discovery in 1989. Gregory and Musgrave celebrated their second Thanksgiving in space two years later, joined by fellow STS-44 NASA astronauts Terrence T. “Tom” Henricks, James S. Voss, Mario Runco, and Thomas J. Hennen aboard space shuttle Atlantis.
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Thanksgiving 1996. Left: STS-80 astronauts Tamara E. Jernigan, left, Kent V. Rominger, and Thomas D. Jones enjoy Thanksgiving dinner in Columbia’s middeck. Right: The STS-80 crew during aboard Columbia exchanging Thanksgiving greetings with John E. Blaha aboard the Mir space station.
In 1996, Blaha celebrated his second Thanksgiving in space with Russian cosmonauts Valeri G. Korzun and Aleksandr Y. Kaleri aboard the space station Mir. Blaha watched the beautiful Earth through the Mir windows rather than his usual viewing fare of football. The STS-80 crew of NASA astronauts Kenneth D. Cockrell, Kent V. Rominger, Tamara E. Jernigan, Thomas D. Jones, and Musgrave, now on his third turkey day holiday in orbit, celebrated Thanksgiving aboard space shuttle Columbia. Although the eight crew members were in different spacecraft in different orbits, they exchanged holiday greetings via space-to-space radio. This marked the largest number of people in space on Thanksgiving Day up to that time. One year later, NASA astronaut David A. Wolf celebrated Thanksgiving with his Russian crewmates Anatoli Y. Solovev, who translated the holiday into Russian as den blagodarenia, and Pavel V. Vinogradov aboard Mir. They enjoyed smoked turkey, freeze-dried mashed potatoes, peas, and milk. Also in orbit at the time was the crew of STS-87, NASA astronauts Kevin R. Kregel, Steven W. Lindsey, Kalpana Chawla, and Winston E. Scott, Takao Doi of the Japan Aerospace Exploration Agency, and Leonid K. Kadenyuk of Ukraine, aboard Columbia. The nine crew members aboard the two spacecraft broke the one-year-old record for the largest number of people in space at one time for Thanksgiving, also setting the record for the most nations represented, four.
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Thanksgiving 2001, Expedition 3 crewmembers enjoying Thanksgiving dinner aboard the space station. Left: NASA astronaut Frank L. Culbertson, left, and Vladimir N. Dezhurov of Roscosmos. Middle: Dezhurov, left, and Mikhail V. Tyurin of Roscosmos. Right: Tyurin, left, and Culbertson.
The Expedition 1 crew of NASA astronaut William M. Shepherd, and Yuri P. Gidzenko and Sergei K. Krikalev of Roscosmos celebrated the first Thanksgiving aboard the International Space Station on Nov. 23, 2000, three weeks after their arrival aboard the facility. The crew took time out of their busy schedule to enjoy ham and smoked turkey and send words of thanks to people on the ground who provided excellent support to their flight. Crews have celebrated Thanksgiving in space every November since then. In 2001, Expedition 3 crew members NASA astronaut Frank L. Culbertson, and Vladimir N. Dezhurov and Mikhail V. Tyurin of Roscosmos enjoyed the first real Thanksgiving aboard the space station, complete with a cardboard turkey as decoration. The following year’s orbital Thanksgiving celebration included the largest number of people to that time, the combined 10 crewmembers of Expedition 5, STS-113, and Expedition 6. After a busy day that included the first Thanksgiving Day spacewalk aboard the space station, the crews settled down to a dinner of smoked turkey, mashed potatoes, and green beans with mushrooms. Blueberry-cherry cobbler rounded out the meal.
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Thanksgiving 2008. Left: The Thanksgiving dinner reheating in space shuttle Endeavour’s food warmer. Right: The crews of Expedition 18 and STS-126 share a meal in the space shuttle middeck.
Expedition 18 crew members NASA astronauts E. Michael Fincke and Gregory E. Chamitoff and Yuri V. Lonchakov representing Roscosmos, welcomed the STS-126 crew of NASA astronauts Christopher J. Ferguson, Eric A. Boe, Heidemarie M. Stefanyshyn-Piper, Donald R. Pettit, Stephen G. Bowen, R. Shane Kimbrough, and Sandra H. Magnus during Thanksgiving in 2008. They dined in the space shuttle Endeavour’s middeck on smoked turkey, candied yams, green beans and mushrooms, cornbread dressing and a cranapple dessert.
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Thanksgiving 2009. Left: Crew members from Expedition 21 and STS-129 share an early Thanksgiving meal. Right: The Thanksgiving dinner for the Expedition 21 and STS-129 crews.
The following year saw the largest and an internationally diverse group celebrating Thanksgiving in space. The six Expedition 21 crew members, NASA astronauts Jeffrey N. Williams and Nicole P. Stott, Roman Y. Romanenko and Maksim V. Suraev of Roscosmos, Frank L. DeWinne of the European Space Agency, and Robert B. Thirsk of the Canadian Space Agency hosted the six members of the STS-129 crew, NASA astronauts Charles O. Hobaugh, Barry E. Wilmore, Michael J. Foreman, Robert L. Satcher, Randolph J. Bresnik, and Leland D. Melvin. The twelve assembled crew members represented the United States, Russia, Belgium, and Canada. The celebration took place two days early, since the shuttle undocked from the space station on Thanksgiving Day.
Thanksgiving 2010. Left: Expedition 25 commander and NASA astronaut Scott J. Kelly awaits his crewmates at the Thanksgiving dinner table. Right: The Expedition 25 crew of Oleg I. Skripochka of Roscosmos, left, Kelly, NASA astronaut Douglas H. Wheeler, Aleksandr Y. Kaleri and Fyodor N. Yurchikhin of Roscosmos, and NASA astronaut Shannon Walker sending Thanksgiving greetings to the ground before digging into their dinner.
Thanksgiving 2013. Left: Expedition 38 NASA astronauts Michael S. Hopkins, left, and Richard A. Mastracchio showing off food items destined for the Thanksgiving Day dinner. Right: Close-up of the Thanksgiving dinner items, including turkey, ham, macaroni and cheese, green beans and mushrooms, and dressing.
Thanksgiving 2014. Left: Eager for Thanksgiving, Expedition 42 commander and NASA astronaut Barry E. “Butch” Wilmore sets out his meal several days in advance. Right: Expedition 42 crew members Wilmore, left, Samantha Cristoforetti of the European Space Agency, Aleksandr M. Samokutyayev and Anton N. Shkaplerov of Roscosmos, NASA astronaut Terry W. Virts, and Elena O. Serova of Roscosmos enjoy the Thanksgiving Day dinner.
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Thanksgiving 2015. Left: Expedition 45 crew members Mikhail B. Korniyenko, left, Oleg D. Kononenko, and Sergei A. Volkov of Roscosmos, NASA astronaut Kjell N. Lindgren, Kimiya Yui of the Japan Aerospace Exploration Agency, and NASA astronaut Scott J. Kelly pose before the Thanksgiving dinner table. Right: Kelly, left, and Lindgren show off the Thanksgiving dinner items.
@acenewsservices Thanksgiving 2016. Left: Expedition 50 crew members Oleg V. Novitsky, left, Sergei N. Ryzhikov, and Andrei I. Borisenko of Roscosmos, Thomas G. Pesquet of the European Space Agency, and NASA astronauts R. Shane Kimbrough and Peggy A. Whitson pose before the Thanksgiving dinner table. Right: The Expedition 50 crew tucks into the feast.@acenewsviews @acenewsservices Thanksgiving 2017. Left: The Thanksgiving table is set. Middle: The Expedition 53 crew of Paolo A. Nespoli of the European Space Agency, left, NASA astronauts Joseph M. Acaba and Mark T. Vande Hei, Sergei N. Ryazansky and Aleksandr A. Misurkin of Roscosmos, and NASA astronaut Randolph J. Bresnik patiently awaits the start of the dinner. Right: The Expedition 53 crew digs in.@acenewsservices Thanksgiving 2019. Left: The turkey is in the oven, or more precisely the smoked turkey packages are in the Galley Food Warmer. Right: Expedition 61 crew members NASA astronaut Christina H. Koch, left, Aleksandr A. Skvortsov of Roscosmos, NASA astronaut Jessica U. Meir, Oleg I. Skripochka of Roscosmos, NASA astronaut Andrew R. Morgan, and Luca S. Parmitano of the European Space Agency celebrate Thanksgiving aboard the space station.@acenewsservices Thanksgiving 2020. Left: Expedition 64 NASA astronaut Kathleen H. “Kate” Rubins prepares the Thanksgiving dinner. Right: The Expedition 64 crew of NASA astronaut Michael S. Hopkins, Soichi Noguchi of the Japan Aerospace Exploration Agency, Sergei V. Kud-Sverchkov and Sergei N. Ryzhikov of Roscosmos, and NASA astronauts K. Meghan McArthur, Victor J. Glover, and Rubins enjoying the Thanksgiving meal including frozen treats for dessert.@acenewsservices Thanksgiving 2021. Left: Thanksgiving dinner cooking in the “oven” aboard the space station. Right: Expedition 66 crew members NASA astronauts Raja J. Chari, left, Kayla S. Barron, Mark T. Vande Hei, Thomas H. Marshburn, Russian cosmonauts Anton N. Shkaplerov and Pyotr V. Dubrov (partially visible), and European Space Agency astronaut Matthias J. Maurer (taking the photo) enjoy the Thanksgiving feast.Thanksgiving 2022. Expedition 68 crew members NASA astronauts Nicole A. Mann, left, Josh A. Cassada, and Francisco “Frank” C. Rubio, and Koichi Wakata of the Japan Aerospace Exploration Agency send Thanksgiving Day greetings.Thanksgiving 2023. Expedition 70 crew members Andreas E. Mogensen, of the European Space Agency, front left, NASA astronauts Loral A. O’Hara and Jasmin Moghbeli, and Satoshi Furukawa of the Japan Aerospace Exploration Agency beam down their Thanksgiving message to everyone on the ground.
We hope you enjoyed these stories, photographs, and videos from Thanksgivings celebrated in space. We would like to wish everyone here on the ground and the seven-member crew of Expedition 70 aboard the space station a very happy Thanksgiving!
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AceBreakingNews – The Elon Musk-owned company says the latest mission will help improve the future reliability of the vehicle, which is a critical part of NASA’s ambitions to return astronauts to the moon.
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Ace Press News From Cutting Room Floor: Published: Nov.18: 2023: Sky News: TELEGRAM Ace Daily News Link https://t.me/+PuI36tlDsM7GpOJe
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SpaceX has lost contact with its Starship mega rocket following explosions during its second test flight from south Texas.
The two-stage 397ft rocket – the largest and most powerful ever built – arced out over the Gulf of Mexico after blasting off from the Elon Musk-owned company’s launch site near Boca Chica.
SpaceX was aiming for an altitude of 150 miles – just high enough for the spacecraft to travel around the globe before ditching into the Pacific near Hawaii 90 minutes after lift-off.
The two-stage 397ft rocket is the largest and most powerful ever built
But while the super heavy first-stage booster appeared to have successfully separated it exploded a short time later.
The main Starship craft continued into space but a few moments later a company broadcaster said mission control had lost contact with the vehicle.
SpaceX’s livestream host John Insprucker said: “We have lost the data from the second stage… we think we may have lost the second stage.”
About eight minutes into the test mission, a camera view tracking the core Starship booster appeared to show an explosion that indicated the vehicle failed at that time on reaching an altitude of 91 miles (148km).
The company said in a post on the social media site X, formerly known as Twitter: “With a test like this, success comes from what we learn, and today’s test will help us improve Starship’s reliability as SpaceX seeks to make life multiplanetary.”
The launch had been scheduled for Friday but was delayed by a day for a last-minute change of flight-control hardware.
Since then, SpaceX had made dozens of improvements to the booster and its 33 engines, as well as the launch pad.
The rocket is a critical part of NASA’s ambitions to return astronauts to the moon.
Mr Musk has also said that Starship could also be used for missions to Mars.
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As Saturn — seen here via NASA’s Cassini spacecraft — moves around the Sun, our viewpoint changes. (NASA/JPL-Caltech/Space Science Institute via Reuters )none
AceNewsDesk – If you can get your hands on a telescope, there are few sights more spectacular than the magnificent ringed planet — Saturn.
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Ace Press News From Cutting Room Floor: Published: Nov.12: 2023: Jonti Horner is professor of astrophysics at the University of Southern Queensland. This piece first appeared on The Conversation.TELEGRAM Ace Daily News Link https://t.me/+PuI36tlDsM7GpOJe
As Saturn — seen here via NASA’s Cassini spacecraft — moves around the Sun, our viewpoint changes. (NASA/JPL-Caltech/Space Science Institute via Reuters )none
Currently, Saturn is clearly visible in the evening sky, at its highest just after sunset. It’s the ideal time to use a telescope or binoculars to get a good view of the Solar System’s sixth planet and its famous rings.
But in the past few days, a slew of articles have run like wildfire through social media. Saturn’s rings, those articles claim, are rapidly disappearing — and will be gone by 2025!
So what’s the story? Could the next couple of months, before Saturn drops out of view in the evening sky, really be our last chance to see its mighty rings?
The short answer is no. While it’s true the rings will become almost invisible from Earth in 2025, this is neither a surprise nor reason to panic. The rings will “reappear” soon thereafter. Here’s why.
Tipping and tilting Earth
To understand why our view of Saturn changes, let’s begin by considering Earth on its constant journey around the Sun. That journey takes us through the seasons — from winter to spring, summer and autumn, then back again.
What causes the seasons? Put simply, Earth is tilted towards one side, as seen from the Sun. Our equator is tilted by about 23.5 degrees from the plane of our orbit.Earth has seasons because its axis is tilted.
The axis always points in the same direction as our planet orbits the Sun.(Supplied: Bureau of Meteorology)
The result?
As we move around the Sun, we alternately tip one hemisphere and then the other towards our star. When your home hemisphere is tilted more towards the Sun, you get longer days than nights and experience spring and summer. When you’re tilted away, you get shorter days and longer nights, and experience autumn and winter.
From the Sun’s viewpoint, Earth appears to “nod” up and down, alternately showing off its hemispheres as it moves around our star. Now, let’s move on to Saturn.
Saturn, a giant tilted world
Just like Earth, Saturn experiences seasons, but more than 29 times longer than ours. Where Earth’s equator is tilted by 23.5 degrees, Saturn’s equator has a 26.7 degree tilt. The result? As Saturn moves through its 29.4-year orbit around our star, it also appears to nod up and down as seen from both Earth and the Sun.
What about Saturn’s rings? The planet’s enormous ring system, comprised of bits of ice, dust and rocks, spreads out over a huge distance — just over 280,000km from the planet. But it’s very thin — in most places, just tens of metres thick. The rings orbit directly above Saturn’s equator and so they too are tilted to the plane of Saturn’s orbit.The planet’s enormous ring system — captured here by NASA’s Hubble Space Telescope — is comprised of bits of ice, dust and rocks.
(NASA, ESA, A Simon (GSFC), M H Wong (University of California, Berkeley) and the OPAL Team via Reuters )
So why do Saturn’s rings ‘disappear’?
The rings are so thin that, seen from a distance, they appear to vanish when edge on. You can visualise this easily by grabbing a sheet of paper, and rotating it until it is edge on — the paper almost vanishes from view.
As Saturn moves around the Sun, our viewpoint changes. For half of the orbit, its northern hemisphere is tilted towards us and the northern face of the planet’s rings is tipped our way.
When Saturn is on the other side of the Sun, its southern hemisphere is pointed our way. For the same reason, we see the southern face of the planet’s rings tilted our way.
The best way to illustrate this is to get your sheet of paper, and hold it horizontally — parallel to the ground — at eye level. Now, move the paper down towards the ground a few inches. What do you see? The upper side of the paper comes into view. Move the paper back up, through your eye line, to hold it above you and you can see the underside of the paper. But as it passes through eye level, the paper will all but disappear.
That’s what we see with Saturn’s rings. As the seasons on Saturn progress, we go from having the southern side of the rings tilted our way to seeing the northern side. Then, the planet tips back, revealing the southern side once more.
Twice per Saturnian year, we see the rings edge on and they all but vanish from view.
That’s what’s happening in 2025 — the reason Saturn’s rings will seemingly “disappear” is because we will be looking at them edge on.
This happens regularly. The last time was in 2009 and the rings gradually became visible again, over the course of a few months. The rings will be edge on once again in March 2025. Then they’ll gradually come back into view as seen through large telescopes, before sliding out of view again in November 2025.
Thereafter, the rings will gradually get more and more obvious, reappearing first to the largest telescopes over the months that follow. Nothing to worry about.
If you want to clearly see Saturn’s rings, now is your best chance, at least until 2027 or 2028!
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GlobalWarming & ClimateChange News Desk – An unusually high tide, called a King Tide, floods a highway on-ramp in Northern California in January 2023. Sea level rise and El Niños can exacerbate this type of flooding
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Ace Press News From Cutting Room Floor: Published: Nov.12: 2023: NASA Climate Change News: TELEGRAM Ace Daily News Link https://t.me/+PuI36tlDsM7GpOJe
California King Tides Project
Such high-tide flooding that inundates roads and buildings along the west coast of the Americas tends to be uncommon outside of ElNiño years, but that could change by the 2030s.
An analysis by NASA’s sea level change science team finds that if a strong El Niño develops this winter, cities along the western coasts of the Americas could see an increase in the frequency of high-tide flooding that can swamp roads and spill into low-lying buildings.
El Niño is a periodic climate phenomenon characterized by higher-than-normal sea levels and warmer-than-average ocean temperatures along the equatorial Pacific. These conditions can spread poleward along the western coasts of the Americas. El Niño, which is still developing this year, can bring more rain than usual to the U.S. Southwest and drought to countries in the western Pacific like Indonesia. These impacts typically occur in January through March.
The NASA analysis finds that a strong El Niño could result in up to five instances of a type of flooding called a 10-year flood event this winter in cities including Seattle and San Diego. Places like La Libertad and Baltra in Ecuador could get up to three of these 10-year flood events this winter. This type of flooding doesn’t normally occur along the west coast of the Americas outside of El Niño years. The researchers note that by the 2030s, rising seas and climate change could result in these cities experiencing similar numbers of 10-year floods annually, with no El Niño required.
NASA/JPL-Caltech
Data from the SWOT satellite shows sea level anomalies – how much higher or lower sea levels are compared to the average height – off the coast of Ecuador and Peru on Aug. 12, 2023, and Oct. 3, 2023. The data indicates the development of an El Niño along the west coast of the Americas.
“I’m a little surprised that the analysis found these 10-year events could become commonplace so quickly,” said Phil Thompson, an oceanographer at the University of Hawaii and a member of NASA’s sea level change science team, which performed the analysis. “I would have thought maybe by the 2040s or 2050s.”
Ten-year floods are those that have a one in 10 chance of occurring in any given year. They’re a measure of how high local sea levels become: The extent of flooding in a particular city or community depends on several factors, including a region’s topography and the location of homes and infrastructure relative to the ocean. Ten-year floods can result in what the National Oceanic and Atmospheric Administration classifies as moderate flooding, with some inundation of roads and buildings, and the possible need to evacuate people or move belongings to higher ground.
NASA’s coastal flooding analysis finds that by the 2030s, during strong El Niño years, cities on the west coast of the Americas could see up to 10 of these 10-year flood events. By the 2050s, strong El Niños may result in as many as 40 instances of these events in a given year.
Watching Sea Levels Rise
Water expands as it warms, so sea levels tend to be higher in places with warmer water. Researchers and forecasters monitor ocean temperatures as well as water levels to spot the formation and development of an El Niño.
“Climate change is already shifting the baseline sea level along coastlines around the world,” said Ben Hamlington, a sea level researcher at NASA’s Jet Propulsion Laboratory in Southern California and lead for the agency’s sea level change science team.
Sea levels are rising in response to planetary warming, as Earth’s atmosphere and ocean are heating up and ice sheets and shelves melt. This has already increased the number of high-tide, or nuisance, flooding days coastal cities experience throughout the year. Phenomena like El Niños and storm surges, which temporarily boost sea levels, compound these effects.
Missions that monitor sea levels, including the Surface Water and Ocean Topography (SWOT) satellite and Sentinel-6 Michael Freilich, help to monitor El Niños in the near term. SWOT in particular, collects data on sea levels right up to the coast, which can help to improve sea level rise projections. That kind of information could aid policymakers and planners in preparing their communities for rising seas in the next decades.
“As climate change accelerates, some cities will see flooding five to 10 times more often. SWOT will keep watch on these changes to ensure coastal communities are not caught off guard,” said Nadya Vinogradova Shiffer, SWOT program scientist and director of the ocean physics program at NASA Headquarters in Washington.
Editor says …Sterling Publishing & Media Service Agency is not responsible for the content of external site or from any reports, posts or links and thanks for following as always appreciate every like, reblog or retweet and comment thank you
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