Warning: INSERT command denied to user 'dbo256360593'@'74.208.59.62' for table 'watchdog' query: INSERT INTO watchdog (uid, type, message, variables, severity, link, location, referer, hostname, timestamp) VALUES (0, 'php', '%message in %file on line %line.', 'a:4:{s:6:\"%error\";s:12:\"user warning\";s:8:\"%message\";s:402:\"INSERT command denied to user 'dbo256360593'@'74.208.59.62' for table 'captcha_sessions'\nquery: INSERT into captcha_sessions (uid, sid, ip_address, timestamp, form_id, solution, status, attempts) VALUES (0, '283cfa52263d93c038ffa44298fe6e22', '3.226.245.48', 1596857928, 'user_login_block', 'bdfc81f1f0c27001047d512fa199bd7a', 0, 0)\";s:5:\"%file\";s:88:\"/homepages/45/d175009339/htdocs/tahoetowhitney.org/sites/all/modules/captcha/captcha.inc\";s:5: in /homepages/45/d175009339/htdocs/tahoetowhitney.org/includes/database.mysqli.inc on line 134
Permafrost shifts to Carbon Contributor as Changing Arctic Climate Drives Chemistry & Ecology Changes

Permafrost shifts to Carbon Contributor as Changing Arctic Climate Drives Chemistry & Ecology Changes


Alex Wierbinski's picture

By Alex Wierbinski - Posted on 19 December 2019

 

OCEANS, ICE, & OUR MELTING PERMAFROST

Caribou on the Permafrost
A caribou atop cliff bluffs that are eroding into a coastal lagoon along the Beaufort Sea on the North Slope of Alaska. UMass Amherst/M. Rawlins.
A caribou atop cliff bluffs that are eroding into a coastal lagoon along the Beaufort Sea on the North Slope of Alaska. A new analysis of the changing character of runoff, river discharge and other watershed features on the North Slope of Alaska reveals significant increases in the proportion of subsurface runoff and cold season discharge, fine photo by UMass Amherst/M. Rawlins.

 

Permafrost Now a Carbon Contributor with Changing Chemistry & Ecology as Arctic Warms

Thawing Permafrost Affecting Northern Alaska's Land-to-Ocean River Flows,
University of Massachusetts Amherst, December 18, 2019.

MAIN POINTS

Permafrost Carbon Release Point
No Longer Storing Carbon...
"Our model estimates of permafrost thaw are consistent with the notion that permafrost region ecosystems are shifting from a net sink to a net source of carbon."

See
Arctic shifts to a carbon source due to winter soil emissions

New Ecology & Chemistry Emerging
Specifics of the Shift
"...warming is expected to shift the Arctic from a surface water-dominated system to a groundwater-dominated system, with deeper water flow paths through newly thawed soils."

Water Chemistry Changes
Flowing to Oceans
"Freshwater and riverborne nutrients, mainly dissolved organic carbon, are transported to coastal estuaries and lagoons that lie at the land-sea interface."

Changing Now
Cold Season Discharge
"...observed significant increases in cold season discharge, such as 134% of the long-term average for the North Slope, and 215% in the Colville River basin."

Major Changes
Flows
"...a significant increase in the ratio of subsurface runoff to total runoff for the region and for 24 of the 42 study basins, with the change most prevalent across the northern foothills of the Brooks Range."

Storage
"...observed a decline in terrestrial water storage, which they attribute to losses in soil ice that outweigh gains in soil liquid water storage."

Earlier Spring
"The timing of peak spring freshet discharge, the flow of snowmelt into the sea, also has shifted earlier by 4.5 days."

Changes Underway
"Our model includes a state-of-the-art simulation of soil freeze-thaw cycles that allows us to better understand how permafrost thaw is influencing the magnitude and timing of hydrological flows."

Brooks Range Changing
"...results point to greater impacts of warming across the Brooks Range, including increasing cold season (November to April) river discharge and a higher proportion of subsurface runoff."

Real Consequences
"Further, the changing terrestrial inflows may be influencing food web structure within the lagoons."

Human Effect
"Local native communities rely on the fish and other resources in the lagoon ecosystem for their subsistence lifestyle. More than 150 species of migratory birds and waterfowl are supported by the region's food webs, and the lagoons are a rich source of fish for native communities."

"Barrow, Nuiqsut and Kaktvik hunters and residents rely on the high productivity of the Beaufort Lagoon systems to support fish and bird populations they live on"

More Information & Insight
How Permafrost is/will be Crashing
"...developing models and leveraging in situ and remote sensing measurements to better understand flows into the Beaufort Lagoons and predict how permafrost thaw and water cycle intensification will affect lagoon ecosystem dynamics in the future."

 

Recent Related Permafrost Research

December 13
Arctic shifts to a carbon source due to winter soil emissions

 

Links to recent permafrost research
from previous article above.

 

 

 

ECO-CRASH NEWS

Fish-Ice-Oceans-Water

News of Man & Nature, December 2019

 

 

 

TOP

 

 

  

More
Nature News

 

Climate Destruction News

 

Trees

Bee News

Bear News

Spider Forum

Bird News

Small Mammals

Frogs and Reptiles

Butterfly News

 

Health and Fitness

Mountain Safety

Mosquito News

Female Trail

High Sierra History

 

Astro-Phys, Space, & Science News

High Sierra Geology News

Fish, Oceans, & Water News

Anthropocene

 

 

TOP

 

permafrost, melting, thawing, water, water cycle, storage, chemistry, flows, ponds, Brooks Range, natives, food webs

 

Powered by Drupal, an open source content management system

Latest News: RSS FEED

Syndicate content

Support Tahoe to Whitney

The Tahoe to Whitney Trail Guide and Magazine are walked, written, funded, and supported by my efforts, with the help of kindred spirits and my sister.

We offer valuable Trail Guide, Skills, Weather, News and Analysis.

My goal is to get you out to see your natural and social potential. Help me keep this unique resource accessible and expanding towards its potential. We've a lot of miles to cover ahead...

I NEED HELP!
If you feel these efforts are valuable, I'm cordially inviting you to support them, here:

 

 

I am currently working towards publishing the completed guide between Tahoe & Yosemite as an e-book, while converting this "blog" to a fine magazine format. You will like the results! Help Tahoe to Whitney reach its potential!

 

Why Support Tahoe to Whitney?
Mission Statement


Warning: INSERT command denied to user 'dbo256360593'@'74.208.59.62' for table 'watchdog' query: INSERT INTO watchdog (uid, type, message, variables, severity, link, location, referer, hostname, timestamp) VALUES (0, 'php', '%message in %file on line %line.', 'a:4:{s:6:\"%error\";s:12:\"user warning\";s:8:\"%message\";s:452:\"INSERT command denied to user 'dbo256360593'@'74.208.59.62' for table 'accesslog'\nquery: INSERT INTO accesslog (title, path, url, hostname, uid, sid, timer, timestamp) values('Permafrost shifts to Carbon Contributor as Changing Arctic Climate Drives Chemistry & Ecology Changes', 'node/2579', '', '3.226.245.48', 0, '283cfa52263d93c038ffa44298fe6e22', 337, 1596857928)\";s:5:\"%file\";s:87:\"/homepages/45/d175009339/htdocs/tahoet in /homepages/45/d175009339/htdocs/tahoetowhitney.org/includes/database.mysqli.inc on line 134