[Sign Up Now] to Receive Our FREE Daily SCVTV-SCVNews Digest by E-Mail

Inside
Weather
Santa Clarita CA
Cloudy
Cloudy
72°F
 
Calendar
Today in
S.C.V. History
June 22
1972 - Vasquez Rocks added to National Register of Historic Places [list]


| Wednesday, Dec 16, 2015
15-239c
Global changes in lake temperatures over the past 25 years. Red shades indicate warming; blue shades indicate cooling. The study found Earth’s lakes are warming about 0.61 degrees Fahrenheit (0.34 degrees Celsius) per decade on average, faster than overall warming rates for the ocean and atmosphere. Credits: Illinois State University/USGS/California University of Pennsylvania

[NASA] – Climate change is rapidly warming lakes around the world, threatening freshwater supplies and ecosystems, according to a new NASA and National Science Foundation-funded study of more than half of the world’s freshwater supply.

Using more than 25 years of satellite temperature data and ground measurements of 235 lakes on six continents, this study — the largest of its kind — found lakes are warming an average of 0.61 degrees Fahrenheit (0.34 degrees Celsius) each decade. The scientists say this is greater than the warming rate of either the ocean or the atmosphere, and it can have profound effects.

The research, published in Geophysical Research Letters, was announced Wednesday at the American Geophysical Union meeting in San Francisco.

15-239main

A combination of satellite data and ground measurements, such as from instrumented buoys like this one in Lake Tahoe on the California/Nevada border, were used to provide a comprehensive view of changing lake temperatures worldwide. The buoy measures the water temperature from above and below. Credits: Limnotech

As warming rates increase over the next century, algal blooms, which can rob water of oxygen, are projected to increase 20 percent in lakes. Algal blooms that are toxic to fish and animals are expected to increase by 5 percent. Emissions of methane, a greenhouse gas 25 times more powerful than carbon dioxide on 100-year time scales, will increase 4 percent over the next decade, if these rates continue.

“Society depends on surface water for the vast majority of human uses,” said co-author Stephanie Hampton, director of Washington State University’s Center for Environmental Research, Education and Outreach in Pullman. “Not just for drinking water, but manufacturing, for energy production, for irrigation of our crops. Protein from freshwater fish is especially important in the developing world.”

Water temperature influences a host of its other properties critical to the health and viability of ecosystems. When temperatures swing quickly and widely from the norm, life forms in a lake can change dramatically and even disappear.

“These results suggest that large changes in our lakes are not only unavoidable, but are probably already happening,” said lead author Catherine O’Reilly, associate professor of geology at Illinois State University, Normal. Earlier research by O’Reilly has seen declining productivity in lakes with rising temperatures.

Study co-author Simon Hook, science division manager at NASA’s Jet Propulsion Laboratory (JPL) in Pasadena, California, said satellite measurements provide a broad view of lake temperatures over the entire globe. But they only measure surface temperature, while ground measurements can detect temperature changes throughout a lake. Also, while satellite measurements go back 30 years, some lake measurements go back more than a century.

“Combining the ground and satellite measurements provides the most comprehensive view of how lake temperatures are changing around the world,” he said.

The researchers said various climate factors are associated with the warming trend. In northern climates, lakes are losing their ice cover earlier in the spring and many areas of the world have less cloud cover, exposing their waters more to the sun’s warming rays.

Previous work by Hook, using satellite data, indicated many lake temperatures were warming faster than air temperature and that the greatest warming was observed at high latitudes, as seen in other climate warming studies. This new research confirmed those observations, with average warming rates of 1.3 degrees Fahrenheit (0.72 degrees Celsius) per decade at high latitudes.

Warm-water tropical lakes may be seeing less dramatic temperature increases, but increased warming of these lakes still can have significant negative impacts on fish. That can be particularly important in the African Great Lakes, where fish are a major source of food.

“We want to be careful that we don’t dismiss some of these lower rates of change,” said Hampton. “In warmer lakes, those temperature changes can be really important. They can be just as important as a higher rate of change in a cooler lake.”

In general, the researchers write, “The pervasive and rapid warming observed here signals the urgent need to incorporate climate impacts into vulnerability assessments and adaptation efforts for lakes.”

NASA uses the vantage point of space to increase our understanding of our home planet, improve lives and safeguard our future. NASA develops new ways to observe and study Earth’s interconnected natural systems with long-term data records. The agency freely shares this unique knowledge and works with institutions around the world to gain new insights into how our planet is changing.

For more information about NASA’s Earth science activities, visit http://www.nasa.gov/earth.

 

 

Comment On This Story
COMMENT POLICY: We welcome comments from individuals and businesses. All comments are moderated. Comments are subject to rejection if they are vulgar, combative, or in poor taste.
REAL NAMES ONLY: All posters must use their real individual or business name. This applies equally to Twitter account holders who use a nickname.

2 Comments

  1. Anonymous says:

    Fake! All pictures are cgi or paintings! NASA is a big fraud! Waste of the tax dollars!

  2. The lakes warm and cool ,and levels go up and down. El Niño will warm them and fill them.tClimate changes and we can’t stop it. The rain this year will help the drought for sure. Get ready!

Leave a Comment


SCV NewsBreak
LOCAL NEWS HEADLINES
Friday, Jun 22, 2018
USA Today: Six Flags Magic Mountain No. 1 Theme Park
After four weeks of spirited voting, USA Today announced Friday that readers have voted Six Flags Magic Mountain the winner of the 2018 Best Theme Park contest.
Friday, Jun 22, 2018
After Firearms Raid, Acosta Calls for More Law Enforcement Funding
The state of California has a list of more than 10,000 known individuals in illegal possession of firearms, but has not provided adequate resources for law enforcement to recover their weapons, Assemblyman Dante Acosta (R-Santa Clarita) said in a statement Friday.
Friday, Jun 22, 2018
Study: Prop. 47 Decreased Racial Disparities in Drug Arrests
A voter-approved ballot measure aimed at reducing California’s prison population and ending racial disparities in the war on drugs has produced most of the cost-saving, equity-focused results it promised, with some exceptions, according to a study published Thursday.
Keep Up With Our Facebook

Latest Additions to SCVNews.com
Los Angeles County Registrar-Recorder/County Clerk Dean C. Logan announced the sixth ballot counting update for the June 5 Statewide Direct Primary Election on Friday.
Sixth Election Results Update for June 5 Primary Election
The Master's University women's cross country team released its 2018 schedule Friday, the highlight coming Nov. 3 when it hosts the Golden State Athletic Conference Championships at Central Park in Saugus.
TMU Women’s Cross Country Releases 2018 Schedule
Minimum wage laws change July 1, so the Santa Clarita Valley Economic Development Corporation and SCV law firm Poole & Shaffery, LLP will present a "Minimum Wage Forum" at College of the Canyons' University Center on Wednesday, August 1 from 7:30 a.m. to 10:30 a.m.
August 1: Minimum Wage Forum at COC University Center
Allison Needham of the Santa Clarita Valley Economic Development Corporation outlines the top five digital trends shaping 2018 so far.
It’s Personal: 5 Digital Trends Shaping 2018
The Robert T. Brentnall Pawsibilities Foundation, a Santa Clarita-based nonprofit animal rescue organization (Tax ID# is 47-5634745), is asking the community to help a family with a litter of German shepherd puppies, by adopting one or donating funds to help care for them.
Animal Rescue Group Seeks Help for German Shepherd Puppies
CalArts School of Art faculty member Shirley Tse will represent Hong Kong at the 2019 Venice Biennale in Venice, Italy, happening now through November 2019.
CalArts’ Shirley Tse to Represent Hong Kong at Venice Biennale
University administrators are falling short in their responsibilities to swiftly hold accountable staff and faculty named in sexual violence complaints and align disciplinary policies with federal guidelines, according to a state audit released Thursday of three University of California campuses.
UCLA, 2 More UC Campuses Faulted for Sex Misconduct Process
The Academy of Motion Picture Arts and Sciences is proud to announce commitments from four additional industry partners – AMC Networks, Moving Picture Institute, Telsey + Company, and Xperi – to participate in Academy Gold, an entertainment industry-wide internship enhancement and mentorship program for students and young professionals from underrepresented communities.
Academy Launches Summer ‘Gold’ Diversity Internships
The Los Angeles County Board of Supervisors in their meeting Tuesday will consider a motion urging California to create an emblem program for licensed cannabis stores so consumers will know which stores are legal.
Supes Propose Statewide Cannabis Store Licensing Program
The JetHawks began the second half of the 2018 season with a win, beating Inland Empire, 7-5, at The Hangar Thursday night.
JetHawks Start Strong in Second Half, Beat IE 7-5
After four weeks of spirited voting, USA Today announced Friday that readers have voted Six Flags Magic Mountain the winner of the 2018 Best Theme Park contest.
USA Today: Six Flags Magic Mountain No. 1 Theme Park
The next meeting of the Los Angeles County Board of Supervisors is set for Tuesday, June 26, starting at 9:30 a.m.
June 26: LA County Board of Supervisors Meeting
The state of California has a list of more than 10,000 known individuals in illegal possession of firearms, but has not provided adequate resources for law enforcement to recover their weapons, Assemblyman Dante Acosta (R-Santa Clarita) said in a statement Friday.
After Firearms Raid, Acosta Calls for More Law Enforcement Funding
A voter-approved ballot measure aimed at reducing California’s prison population and ending racial disparities in the war on drugs has produced most of the cost-saving, equity-focused results it promised, with some exceptions, according to a study published Thursday.
Study: Prop. 47 Decreased Racial Disparities in Drug Arrests
A Santa Clarita Valley Sheriff's Station deputy reportedly clocked a Las Vegas woman driving 93 miles an hour near the Saugus Speedway and arrested her on charges of excessive speed and reckless driving late Wednesday night.
Nevada Woman Arrested for Speeding, Reckless Driving in Saugus
1972 - Vasquez Rocks added to National Register of Historic Places [list]
The ARTree still has openings for next week's Junior Arts Sampler and "I Made That!" pastel classes.
ARTree Summer Classes Still Available
The Santa Clarita Arts Commission will hold a study session, Monday, June 25, at 6:30 p.m.
June 25: Arts Commission Study Session
The California Enterprise Development Authority will hold a teleconference meeting, Thursday, June 28, 2018 at 10:30 a.m.
June 28: California Enterprise Development Authority Teleconference Meeting
The Santa Clarita City Council will hold a special meeting Tuesday, June 26, at 5:30 p.m.
June 26: Santa Clarita City Council Special Meeting
Firefighters are battling a brush fire at the Sunshine Canyon Landfill that started around 3:00 p.m. Thursday.
Firefighters Battling 1-2 Acre Fire Near Newhall Pass
Glenn Frankel and Keri Walsh have been named 2018 Academy Film Scholars by the Academy of Motion Picture Arts and Sciences.
Academy Honors 2018 Film Scholars
Join the Santa Clarita Valley Chamber of Commerce and Sweat Box Sauna Bar as they celebrate the opening of their new location.
June 27: Grand Opening Celebration Sweat Box Sauna Bar
Fresh Mustang connections to Major League Baseball didn't end with the draft earlier this month. Master's graduate David Sheaffer, who transferred before his final collegiate season to pursue an international MBA program, signed a free agent contract with the Seattle Mariners on June 10.
TMU Alum Signs with Seattle Mariners
There are spots still available on the Saugus Spartans Football program for kids between the ages of 6-8 years old.
Spots Still Open on Saugus Spartans Football Program
An already extremely tight inventory bumped into rising interest rates to further complicate home sales during May in the Santa Clarita Valley, which saw drops in home and condominium closed escrows compared to a year ago, the Southland Regional Association of Realtors reported Thursday.
SCV Home, Condo Sales Drop Amid Tight Inventory, Rising Interest Rates
Detectives from the Santa Clarita Valley Sheriff's Station are looking for a male suspect who stole a tip jar from a local coffee shop. Details below are from the Facebook page of the SCV Sheriff's Station:
Detectives Seek Public’s Help in Nabbing Tip Jar Thief
Adoption is a meaningful way for individuals and couples to fulfill their dream of parenting. There are approximately 64,000 children in foster care in California.
July 28: Children’s Bureau Foster Care, Adoption Information Meeting
The Los Angeles County Sheriff’s Department will be conducting a specialized Motorcycle Safety Enforcement Operation on Friday, June 22, in the city of Santa Clarita in an effort to lower deaths and injuries.
LASD to Conduct Specialized Motorcycle Safety Operation
LOS ANGELES – According to the South Coast Air Quality Management District, air quality will be unhealthy for all individuals in Santa Clarita Valley and for sensitive individuals in East San Gabriel Valley area tomorrow, Friday, June 22.
Air Quality Advisory Issued for SCV
1941 - Ernie Hickson buys out Trem Carr's interest in their Monogram movie ranch, renames it "Placeritos" (later called Melody). [story]
CalArts alumna and faculty member Brigette Barrager (BFA Film/Video 07) was awarded the Christopher Award for Distinguished Achievement for her illustration of "Pocket Full of Colors."
CalArts Faculty Brigette Barrager Wins Christopher Award
"Window Lace," the first exhibit by CalArts students to be presented at the Westfield Valencia Town Center Mall, is now open on the mall's first floor across from H&M and will be on display through the end of summer 2018.
CalArts Opens its First Art Exhibit at Westfield Valencia Mall
The Academy of Motion Picture Arts and Sciences today announced that Jennifer Todd has won the runoff election for the open Producers Branch seat on the 2018–19 Board of Governors.
Producer Jennifer Todd Voted to Academy Board of Governors
California's median home price reached a new high in May, while home sales retreated both on a monthly and annual basis, wiping out most of the gains posted for the year, the California Association of Realtors said Tuesday.
California Median Home Price Hits Record High, Sales Drop in May
In an effort to transform California’s relationship to energy markets in the western region of the country, lawmakers on Tuesday advanced a bill that would merge California into a regional energy market.
California’s Controversial Energy-Grid Bill Advances