麻豆影视

Climate and Environment

    • Tall waves could mean more ice-forming clouds, according to study that seeks to improve climate models

    In this July 27, 2017, file photo, an iceberg floats past the Finnish icebreaker MSV Nordica as it sails the Davis Strait toward Greenland. (AP Photo/David Goldman, File) In this July 27, 2017, file photo, an iceberg floats past the Finnish icebreaker MSV Nordica as it sails the Davis Strait toward Greenland. (AP Photo/David Goldman, File)
    Share
    TORONTO -

    Could the height of waves in freezing cold water have something to do with how ice forms in clouds? According to new analysis of a research vessel鈥檚 trip through the Chukchi Sea, there could be a connection, one that could help make climate models more accurate.

    As global warming causes more sea ice to melt in the Arctic region, it allows for stronger winds to whip up taller waves, sending sea spray high into the air. The new study, published last month in, looks at how particles flung from waves could promote the development of ice-forming clouds.

    The formation of clouds, and how exactly it occurs, is an important part of weather systems, and helps us understand how to track something called the surface heat budget: how much heat is required to make a respective body of water鈥檚 temperature rise from its winter minimum to its summer maximum. This surface heat budget then informs climate models that researchers use to track climate change.

    鈥淭he insight gained from this study is very important if we are to accurately predict the effects of global warming on the Arctic,鈥 a press release stated.

    This new study looks at data collected in November 2018, by a research vessel on an Arctic cruise in the Chukchi Sea, north of the Bering Strait. The ship was taking meteorological observations and analyzing the different types of organic particles that sea spray throws up into the air from the peak of waves.

    In order to take these measurements, researchers on the ship launched particle sensors into clouds using balloons. They also took measurements from different depths of the ocean itself to understand how the roughness of the ocean on any given day is related to weather and the oceanic particles interacting with clouds.

    The particles they were most interested in are called ice-nucleating particles (INPs). These are particles that essentially act as 鈥渟eeds鈥 in the sky, promoting the growth of ice in clouds by freezing droplets.

    During the research vessel鈥檚 trip, there were different weather phases. During the first phase, the winds were up, but the temperature of the air was 鈥渞easonably high鈥 as well. The air temperature decreased over a period of three days. During a two-day span later in the research, the wind speed hit its maximum, but the air temperature and the water temperature were -- at times -- differing by up to 10 degrees.

    鈥淪ea surface temperature during this month was a record maximum, which promoted the delay of sea ice advance in this area,鈥 the study stated.

    The study found that during these high-wave conditions, there was a higher concentration of INPs, which 鈥渃orresponded to greater quantities of ice crystals in lower-level clouds.鈥 During these conditions, the concentration of INPs increased by a factor of 10 times compared to earlier periods.

    When researchers analyzed the aerosols themselves, they found 鈥渁 high amount of [organic carbon] associated with high content of sea salt鈥 which suggests that a big source of the INPs found in clouds is the sea spray itself.

    The Chukchi Sea itself is also a 鈥渕arine biological hot spot,鈥 the study pointed out. It is relatively shallow and has well mixed ocean layers, in which particles closer to the bottom can be drawn up towards the surface during rough conditions.

    The release stated that this discovery puts researchers closer to understanding what promotes ice-forming clouds, which are an important part of understanding Arctic weather.

    鈥淚ce clouds reflect much less shortwave solar radiation than water clouds, and thus the phase of clouds greatly affects the surface heat budget of the polar regions,鈥 the release stated. 鈥淭hey may also increase the amount of snowfall, which in turn positively affects sea-ice formation.鈥

    More studies are needed to look more deeply at just how the cycle works, and how climate change interacts with it, but researchers say this puts us a step closer.

    鈥淯nderstanding the relationship between cloud formation and the new sea state originating from the recent Arctic sea-ice decline is critical for skillful weather and sea-ice forecasts, as well as future climate projections,鈥 Jun Inoue, with the National Institute of Polar Research in Japan, said in the release. 

    CTVNews.ca Top Stories

    Two nephews of the beloved Harry R. Hamilton share stories about his life and legacy.

    The union representing some 1,200 dockworkers at the Port of Montreal has overwhelmingly rejected a deal with their employers association.

    Canada

    • Two nephews of the beloved Harry R. Hamilton share stories about his life and legacy.

    • The union representing some 1,200 dockworkers at the Port of Montreal has overwhelmingly rejected a deal with their employers association.

    • A man who was critically injured in a police-involved shooting in Hamilton late Sunday afternoon has died in hospital, says the province鈥檚 police watchdog.

    World

    Politics

    • Murray Sinclair鈥檚 family members say the late justice and senator has been laid to rest according to his wishes.

    • Prime Minister Justin Trudeau announced voters in Cloverdale鈥擫angley City will pick their next member of Parliament on Dec. 16.

    Health

    Sci-Tech

    Entertainment

    Business

    Lifestyle

    Sports

    Autos

    Local Spotlight

    For the second year in a row, the 鈥楪ift-a-Family鈥 campaign is hoping to make the holidays happier for children and families in need throughout Barrie.

    Some of the most prolific photographers behind CTV Skywatch Pics of the Day use the medium for fun, therapy, and connection.

    A young family from Codroy Valley, N.L., is happy to be on land and resting with their newborn daughter, Miley, after an overwhelming, yet exciting experience at sea.

    As Connor Nijsse prepared to remove some old drywall during his garage renovation, he feared the worst.

    A group of women in Chester, N.S., has been busy on the weekends making quilts 鈥 not for themselves, but for those in need.

    A Vancouver artist whose streetside singing led to a chance encounter with one of the world's biggest musicians is encouraging aspiring performers to try their hand at busking.

    Ten-thousand hand-knit poppies were taken from the Sanctuary Arts Centre and displayed on the fence surrounding the Dartmouth Cenotaph on Monday.

    A Vancouver man is saying goodbye to his nine-to-five and embarking on a road trip from the Canadian Arctic to Antarctica.

    • Weather watchers were treated to an exceptionally rare display on Friday evening as rare cloud formations filled Vancouver skies.

    • For some shoppers it was Nov. 1, but for others the first hints of Christmas - saccharine treats, festive-fragranced candles and gaudily wrapped gift sets - were being noticed in stores long before the final Halloween decor had been cleared.

    • Thousands of people are expected to gather in downtown Vancouver on Monday to observe the city鈥檚 100th Remembrance Day ceremony.

    • Toronto is expected to see an economic boost to the tune of nearly $300 million thanks to Taylor Swift鈥檚 upcoming Eras Tour, which will be making a stop in Canada鈥檚 largest city for a six-show run later this month.

    • One man was transported to hospital early Monday morning after a stabbing in the northwest end of the city, Toronto police say.

    • Calgarians will be observing Remembrance Day at a number of different ceremonies across the city, including at the Hangar Flight Museum.

    • A home in the northeast Calgary community of Saddle Ridge was damaged in a fire on Sunday.

    • WEATHER

      WEATHER

      Conditions were warm early Monday and expected to remain that way for most of the day.

    • WATCH LIVE

      WATCH LIVE

      CTVNewsOttawa.ca looks at Remembrance Day ceremonies in Ottawa.

    • After months of controversy surrounding a dog park in Ottawa's west end, a solution has been reached to divide the park in half.

    • With fewer interments and rising maintenance fees, the money for Canada's largest military cemetery will run out in three to four years.

    • The employers association at the Port of Montreal locked out nearly 1,200 longshore workers, bringing a halt to traffic at the port.

    • Though most businesses are expected to be open on Remembrance Day, there are some establishments that will be closed to commemorate the holiday.

    • LIVE @ 10:45 A.M. MT

      LIVE @ 10:45 A.M. MT

      Monday is Remembrance Day, a time to honour armed forces members who have died in the line of duty.

    • WEATHER

      WEATHER

      This is shaping up to be one of the warmest Remembrance Days in the past decade, at least, for temperatures.

    • Maritimers will stop Monday to remember those who have served, and continue to serve, in Canada's armed forces for Remembrance Day.

    • A Cape Breton senior recalls her life in German-occupied France, and her mother鈥檚 death, during the Second World War.

    • Thousand of people gathered at the Menin Gate in the Ypres, Belgium for Monday鈥檚 Remembrance Day Ceremony.

    • Remembrance Day is today, and a number of ceremonies are taking place around the province to honour those who gave their lives to serve our country.

    • A pillar in Canada鈥檚 history was honoured in Winnipeg Sunday afternoon, with thousands showing up to pay tribute to the life and legacy of the late Murray Sinclair.

    • Winnipeg police have identified two men involved in a stabbing incident earlier this week.

    • There will be two ceremonies taking place in Regina for Remembrance Day, hosted by the Royal Canadian Legion.

    • Regina author Valerie Crowther is celebrating the release of her book 鈥榃ar Letters: Linking Lives in the Second World War.鈥

    • It was a somber day at Mosaic Stadium as members of the Saskatchewan Roughriders officially cleaned out their stalls and closed the book on the 2024 season.

    • A team of tornado experts is heading to Fergus, Ont. after a storm ripped through the area Sunday night.

    • People across Canada will pause to reflect Monday at Remembrance Day Ceremonies across the country.

    • A man has been charged after a stabbing at an apartment building in Kitchener.

    • Saskatchewan RCMP are searching for a suspect after a man was seriously injured in a farm-related incident in Montreal Lake.

    • It was a somber day at Mosaic Stadium as members of the Saskatchewan Roughriders officially cleaned out their stalls and closed the book on the 2024 season.

    • The Regina Rams claimed the Hardy Cup after a hard fought battle against the Saskatoon Huskies 19-14 on Saturday in the first all Saskatchewan U-Sports western conference final since 2002.

    • WATCH LIVE

      WATCH LIVE

      The events will start at 10:15 a.m. with a parade that forms up in front of the Delta London Armories, marches east on Dundas Street and turns north onto Waterloo Street to Dufferin Avenue, the west to the Cenotaph.

    • Emergency crews responded to the scene on Road 68/Highway 2 east of Thamesford around 7 p.m.

    • On Friday, the Sarnia Police Service (SPS) received a report of an alleged abduction in the area of Kathleen Avenue and Walnut Avenue.

    • Watch Live

      Watch Live

      Barrie residents will gather on Monday to honour Canada鈥檚 veterans and pay tribute to those who served and sacrificed for the country.

    • Environment Canada issued a weather alert for Barrie, Collingwood and surrounding areas, alerting residents about the wicked winds that are expected to pick up to 80 kilometres per hour in the afternoon hours.

    • A driver is facing multiple charges after a multi-vehicle collision on Highway 400 early Sunday morning.

    • WATCH LIVE

      WATCH LIVE

      Representatives of the Windsor Veterans Memorial Services Committee, military representatives, wreath bearers, government officials, and members of the public will attend the Cenotaph at City Hall Square for the outdoor service.

    • One person has been arrested after Chatham-Kent Police Service (CKPS) received multiple complaints about an alleged drunk driver.

    • More details have been released about a police investigation at the Ambassador Bridge that connects Windsor, Ont. and Detroit, MI.

    • Environment Canada says heavy rain and winds could cause power outages on Vancouver Island as an "intense" storm system is set to hit the B.C. coast Sunday.

    • Six deer were struck by vehicles in six different locations in a six-hour period on B.C. highways on Saturday, according to the transportation ministry.

    • The union for locked-out port workers in British Columbia says the BC Maritime Employers Association cut off talks in less than an hour Saturday, refusing to budge on a final offer that the union has so far rejected.

    • The emergency department at South Okanagan General Hospital in Oliver, B.C., will be closed for 31 hours this weekend, the second such closure in a week and the third since the start of November.

    • Police in Kamloops, B.C., are reminding parents and guardians to check their children's Halloween candy after receiving a report of a mother finding a razor blade in one of her daughter's treats.

    • More than two years after Alannah Brown and Douglas Barker were found dead north of Penticton, police are asking for help identifying a vehicle they believe was associated with the crime.

    • The Southern Alberta Recreation Association is officially announcing the Town of Taber as next year鈥檚 host for the Southern Alberta Summer Games.

    • The Lethbridge Hurricanes broke open a close game with three goals in the first two minutes of the third period as they defeated the Warriors 7-3 in a game played Friday night in Moose Jaw.

    • There might not a lot snow just yet, but many southern Albertans are still itching to get outdoors.

    • It was just days before the COVID-19 pandemic shut the world down when the Shaft Bottom Boys of Sudbury broke a world record for 'Deepest Concert Underground.' Now, more than four years later, a Timmins band is looking to take the title.

    • Police have arrested a 15-year-old in connection with a break-in and $50,000 in damage done to the Centennial Arena in Elliot Lake in September.

    • Mayors of the five largest cities in northern Ontario met in North Bay the last two days to discuss a range of critical issues impacting their cities and the region.

    N.L.

    Shopping Trends

    The Shopping Trends team is independent of the journalists at 麻豆影视. We may earn a commission when you use our links to shop.聽Read about us.

    Stay Connected
    Follow 麻豆影视