Main Menu
Google Search
Current GWH News
Global Warming Hoax News From Around the Web

World Climate Report

» A Classic Tale of Global Warming Alarmism

» More Evidence Against a Methane Time Bomb

» Agriculture: Tropical Cyclones are Welcome Visitors

» Sea Level Acceleration: Not so Fast

» Hansen Is Wrong

» Earth’s Carbon Sink Still Strong and Growing

» Wild Speculation on Climate and Polar Bears

» Illiteracy at NASA

» The Heat Was On—Before Urbanization and Greenhouse Gases

» What’s to Blame for the Rains on the Plains?

NewsBusters - Global Warming

» CNN's Blitzer: 'I Don't Remember' Biden's Law School Plagiarism

» CNN's Chetry: 'Please Tell Me It's Not Lipstick Again'

» MRC Report Asks: Why No Fairness Doctrine for PBS?



Climate Science: Roger Pielke Sr. Research Group

» Roger Pielke Sr. is now on Twitter!

» 2012 Climate Science Weblog in Review by Dallas Jean Staley – A Guest Post

» The Weblog Is Retiring

» Publication Of “Reply to “Comment On ‘Ocean Heat Content And Earth’s Radiation Imbalance. II. Relation To Climate Shifts’ ” by Nuccitelli Et Al. By Douglass and Knox 2012

» Q&A From A Group Of Retired NASA Personnel And Associates

» The Importance of Land Use/Land Practices On Climate – A Perspective From Jon Foley

» Interview With James Wynn In The English Department At Carnegie Mellon University

» University Of Alabama At Huntsville October 2012 Lower Tropospheric Temperature Analysis

» USA Election Day 2012

» New Paper “Climatic Variability Over Time Scales Spanning Nine Orders of Magnitude: Connecting Milankovitch Cycles With Hurst–Kolmogorov Dynamics” By Markonis And Koutsoyiannis


» Was early onset industrial-era warming anthropogenic, as Abram et al. claim?

» Re-examining Cook’s Mt Read (Tasmania) Chronology

» Esper et al 2016 and the Oroko Swamp

» Gergis and Law Dome

» Joelle Gergis, Data Torturer

» Gergis

» Are energy budget TCR estimates biased low, as Richardson et al (2016) claim?

» Deflategate: Controversy is due to Scientist Error

» Schmidt’s Histogram Diagram Doesn’t Refute Christy

» Gavin Schmidt and Reference Period “Trickery”



Global Warming News

» Clean Power Plan Oral Argument Transcript Available Here!

» President Obama and Chinese President Xi will officially join the Paris Climate Treaty on 3rd September

» South China Morning Post reports: China and US to ratify landmark Paris climate deal ahead of G20 summit, sources reveal

» Posting: Little-Known Documents Pertinent to Assessing the Legality of EPA’s Clean Energy Incentive Program

» Kyoto-Financed Cook Stoves Fail as Health/Climate “Intervention”

» CEQ Finalizes NEPA Guidance for Greenhouse Gases: Will Pointless Keystone XL Controversy Become ‘New Normal’?

» Democratic Platform Vows To Meet Climate Challenge with Good-Paying Jobs, Cheaper Energy from Green Sources, and National Mobilization

» Cognitive Dissonance Among Elected Climate Alarmists

» Republican Party Platform: Paris Climate Treaty Requires Ratification; Defund UNFCCC; and Block EPA Climate Rules

» Philippine President Rejects Paris Climate Treaty








More Global Warming Hoax News Feeds

Since Exxon Hasn't Sent Us Our First Million Dollars Yet You're Welcome To Help Pay Our Bills Until They Do.


»Washington’s War Against Your Air Conditioner
John Kerry explained in a speech in New York last month, the Obama administration targeted HFCs. Ker ...
»Toronto Star Editorial: ‘UN should not bar skeptics from climate conference’ – ‘A troubling precedent’ – ‘UN should change its mind’
Toronto Star Editorial: PEN Canada, Canadian Journalists for Free Expression and the Canadian Associ ...
»Species may be listed as threatened based on climate change projections, court says
»NYT: Global Warming Will Cause ‘Surge’ In Forced Child Marriages
Experts “fear that growing migration to already overcrowded Dhaka, as climate change pressures exace ...
»Dem VP Nominee Kaine Compares Fighting Global Warming to a Twelve-Step Program
Kaine compared defeating climate change to a twelve-step program. According to Kaine, unless you adm ...
»EPA Chief: ‘People Have to Start Living a Life That’s Commensurate with Reductions in Greenhouse Gases’
»NASA’s Lead Climate Scientists: Sky literally is falling because of ‘Climate Change’
As the world reaches a globally significant carbon emissions milestone, the sky is literally fallin ...
»GOP Senator On Climate Change: ‘Mankind Has Actually Flourished In Warmer Temperatures’
»When Asked To Show Evidence Of Man-Made Warming, Scientists Can’t Do It
»Actor Mark Ruffalo calls Obama ‘immoral’ at climate rally for allowing fracking

Date published: Wed, 26 Oct 2016 07:01:17 +0000

»What Do 16 Years of CERES Data Tell Us About Global Climate Sensitivity?
Short Answer: It all depends upon how you interpret the data. It has been quite a while since I have ...
»New Santer et al. Paper on Satellites vs. Models: Even Cherry Picking Ends with Model Failure
(the following is mostly based upon information provided by Dr. John Christy) Dr. John Christy ...
»Global Warming be Damned: Record Corn, Soybeans, Wheat
For many years we have been warned that climate change is creating a “climate crisis”, w ...
»4,001 Days: The Major Hurricane Drought Continues
Also, The Hurricane Center Doesn’t Overestimate…But It Does Over-warn Today marks 4,001 ...
»Matthew Could Get Loopy, Hit Florida Twice
(UPDATED 7:25 a.m. EDT Thursday October 6) Several days ago, it seemed unlikely that Major Hurricane ...
»UAH Global Temperature Update for September 2016: +0.44 deg. C
September Temperature Unchanged from August NOTE: This is the eighteenth monthly update with our new ...
»Matthew to Arrive 4,000 days after Last Major Hurricane
Updated 7:30 a.m. EDT Saturday, Oct. 1. Major Hurricane Matthew was briefly a Category 5 hurricane o ...
»The Faster a Planet Rotates, the Warmer its Average Temperature
This is a followup to my post from yesterday where I provided time-dependent model results of the da ...
»Errors in Estimating Earth’s No-Atmosphere Average Temperature
ABSTRACT While the non-linearity of the Stefan-Boltzmann equation leads to at least a 60 deg. C over ...

Date published: Fri, 21 Oct 2016 16:28:08 +0000

»My Climate Plan, Wherein a Climate Skeptic Actually Advocates for A Carbon Tax
I am always amazed at how people like to draw conclusions about what I write merely from the title, ...
»Come See My Climate Talk on Wednesday Evening, February 24, at Claremont-McKenna College
I am speaking on Wednesday night at the Athenaeum at Claremont-McKenna College near Pomona on Wednes ...
»US Average Temperature Trends in Context
Cross-posted from Coyoteblog. There was some debate a while back around about a temperature chart so ...
»Revisiting (Yet Again) Hansen’s 1998 Forecast on Global Warming to Congress
I want to briefly revisit Hansen’s 1998 Congressional forecast.  Yes, I and many others have c ...
»Matt Ridley: What the Climate Wars Did to Science
I cannot recommend Matt Ridley’s new article strongly enough.  It covers a lot of ground be he ...
»Manual Adjustments in the Temperature Record
I have been getting inquiries from folks asking me what I think about stories like this one, where P ...
»Mistaking Cyclical Variations for the Trend
I titled my very first climate video “What is Normal,” alluding to the fact that climate ...
»Typhoons and Hurricanes
(Cross-posted from Coyoteblog) The science that CO2 is a greenhouse gas and causes some warming is h ...
»Those Who Follow Climate Will Definitely Recognize This
This issue will be familiar to anyone who has spent time with temperature graphs.  We can ask oursel ...
»Layman’s Primer on the Climate Skeptic Position
I am a “lukewarmer”, which means a skeptic that agrees that man-made CO2 is incrementall ...

Date published: Fri, 18 Mar 2016 16:20:20 +0000

»Now That World Government Has Been Achieved The Planet Can Start Cooling
By Elmer Beauregard Obama has done it, he has fulfilled his promise to  “fundamentally transfo ...
»Obama Will Bypass Congress And Join UN Climate Treaty, Sources Say
By Michael Bastasch, The Daily Caller The U.S. and China will formally join the United Nations globa ...
»Very Clever ‘Thanks Famous Actors’ Trump Ad
»Crystal Serenity AKA Stucky McStuckBoat Sets Out On Historic Voyage
By Elmer Beauregard Yesterday the Crystal Serenity AKA Stucky McBoatStuck left port from Seward Alas ...
»After Brexit, Clexit
Summary Statement by Viv Forbes, Founding Secretary of Clexit Harmful, Costly, Unscientific Climate ...

Date published: Wed, 05 Oct 2016 22:02:23 +0000

»Was early onset industrial-era warming anthropogenic, as Abram et al. claim?
A guest post by Nic Lewis Introduction A recent PAGES 2k Consortium paper in Nature, Abram et al., t ...
»Re-examining Cook’s Mt Read (Tasmania) Chronology
In today’s post, I’m going to re-examine (or more accurately, examine de novo) Ed Cook ...
»Esper et al 2016 and the Oroko Swamp
Jan Esper, prominent in early Climate Audit posts as an adamant serial non-archiver, has joined with ...
»Gergis and Law Dome
In today’s post, I’m going to examine Gergis’ dubious screening out of the Law Dom ...
»Joelle Gergis, Data Torturer
In 2012, the then much ballyhoo-ed Australian temperature reconstruction of Gergis et al 2012 myster ...
redirect to here
»Are energy budget TCR estimates biased low, as Richardson et al (2016) claim?
A guest post by Nic Lewis   Introduction and Summary In a recently published paper (REA16), Mar ...
»Deflategate: Controversy is due to Scientist Error
I’ve submitted an article entitled “New Light on Deflategate: Critical Technical Errors ...
»Schmidt’s Histogram Diagram Doesn’t Refute Christy
In my most recent post,  I discussed yet another incident in the long running dispute about the inco ...
»Gavin Schmidt and Reference Period “Trickery”
In the past few weeks, I’ve been re-examining the long-standing dispute over the discrepancy b ...

Date published: Fri, 21 Oct 2016 20:26:02 +0000

Date published: not known

»Proof WA Water Corporation does not reliably record rain
After a wet weekend 15th-16th October WA Water Corporation recorded rain at only 2 of their 7 Perth ...
»Stopping the Australian Coal Export Boom
Jo Nova has a blog – US donors funding activists to shut down Australian mines, ports and rail ...
»Innovative variation on ABC anti-mining campaign
Rehabilitating abandoned mines could create thousands of ‘badly needed’ jobs opines the ...
»5 minute data South Australian electricity blackout
AEMO is fine tuning their story with another edition out. – at least this edition has a better ...
»Chart history of ACT elections 1989-2016
Just major voting groups percentages – data mostly from ACTEC and the ABC. The hordes of vario ...
»Obfuscating reply from WA Minister for Water re my call for rainfall audit
My emails asking for an audit are in comments. My Table below from 15 Sep – of catchment stati ...
»Electricity prices fudged now – just like temperature
AEMO daily Regional Reference Price for South Australia clearly fudged – if this carries on th ...
»Negative electricity prices show our grid administration is in fairyland
For 4 hours now South Australian electricity prices have been zero or negative. How do we expect to ...
»Worsening electricity reserve shortfalls predicted in South Australia
Looking ahead 2 years to 2018 electricity grid authority AEMO predicts reserve shortfalls in South A ...
»Stunning display of common sense by Australian Industry Minister
Government’s energy policy worsened South Australian state-wide blackout Are scales falling fr ...

Date published: Wed, 26 Oct 2016 01:37:24 +0000
Latest Forum Posts
Posted by Eric Romano
Hey. Has anyone tried studying with Flashcards? Yo[more ...]
10/17 04:20

Posted by Anonymous
10/06 19:59

Posted by Matt Ronson
I was a busy student. I have financial problems. B[more ...]
09/27 00:58

Posted by Anonymous
This is truly awesome forum i really appreciate th[more ...]
09/13 04:14

Posted by Anonymous
09/06 20:14

Posted by Anonymous
Assignment writing services are bad for students. [more ...]
09/05 02:09

Posted by Anonymous
There is lots of interesting thread to discuss i a[more ...]
09/03 01:54

Posted by Anonymous
We here come out with the best essay writing servi[more ...]
08/25 23:02

Posted by Anonymous We come out with[more ...]
08/24 23:19

Posted by Anonymous is an onli[more ...]
08/24 00:45

Relevant Sponsors

Any Amount helps support improvements

* or *

Advertise on this site

Road Gear

License Plate Frames
Support the Truth

Skeptic License Plate Frame

It's Natural License Plate Frame
"It`s Natural"

Liberty License Plate Frame

* MORE *
Strong and durable metal license plate holder. Uses full color high resolution images. UV and Water Protection. Satisfaction Guaranteed
RSS Feeds
Our news can be syndicated by using these rss feeds.


Remember me

[ ]
[ ]
Mobile Version
e107mobileYou can now visit us on your mobile phone! Simply goto on your mobile phone or PDA to get started!

<< Previous thread | Next thread >>   
Ocean Sediment, It's A Gas by Dr. Doug L. Hoffman

Begin New Thread
Author Post
Wed May 11 2011, 08:56AMQuote
Registered Member #140
Joined: Sun May 11 2008, 12:38PM
Posts: 2178

Methane is an important greenhouse gas, 30 times more potent than CO2, but our knowledge of the methane cycle is woefully inadequate. Sediments on the ocean's floor contain immense quantities of methane and there are enormous fluxes of methane into and out of these sediments. Trapped frozen in ice, there are some 10,000 gigatons of carbon stored under the sea—twice as much carbon as contained in conventional fossil fuel reserves. Some scientists consider the release of this methane the single worst environmental danger we face as a species. A massive release of ocean floor methane could cause real runaway global warming that would have dramatic impact on life. But methane continually leaks from seabeds around the world, contributing to the total amount of carbon injected into the ecosystem. A new report finds that ocean methane concentrations have been underestimated by a factor of 10 to 20 fold.

Estimates of sedimentary methane production vary between 85 and 300 Tg per year, but analytical difficulties have made previous measurements too imprecise to tell what the true amount is. Most previous estimates were calculated from ship board readings, not measurements taken at depth. According to a report in Geophysical Research Letters, Zhang et al., in order to avoid the sampling issues that have plagued other methods, employed an in situ technique to measure methane concentrations in sediments. Motivation for the research and general results are listed in the abstract:

Ocean sediment dissolved CH4 concentrations are of interest for possible climate-driven venting from sea floor hydrate decomposition, for supporting the large-scale microbial anaerobic oxidation of CH4 that holds the oceanic CH4 budget in balance, and for environmental issues of the oil and gas industry. Analyses of CH4 from recovered cores near vent locations typically show a maximum of ∼1 mM, close to the 1 atmosphere equilibrium value. We show from novel in situ measurement with a Raman-based probe that geochemically coherent profiles of dissolved CH4 occur rising to 30 mM (pCH4 = 3 MPa) or an excess pressure ∼3× greater than CO2 in a bottle of champagne. Normalization of the CH4 Raman ν1 peak to the ubiquitous water ν2 bending peak provides a fundamental internal calibration. Very large losses of CH4 and fractions of other gases (CO2, H2S) must typically occur from recovered cores at gas rich sites. The new data are consistent with observations of microbial biomass and observed CH4 oxidation rates at hydrate rich sites and support estimates of a greatly expanded near surface oceanic pore water CH4 reservoir.

In short, they found concentrations as much as 10 to 20 times higher than those determined by shipboard measurements and conclude that production rates are near the high end of past estimates. Researchers have known since the 1960s that there are large natural deposits of frozen ice containing methane lying on the ocean floor, where the high pressure and cold temperature keep them from melting. Oceanographers have pulled up frozen chunks of this material, called methane clathrate or hydrate, from more than 90 locations around the world.

Methane clathrate deep ocean deposit.

Clathrate hydrates are cage-like minerals in which water forms an ice-like cage structure in which gas molecules, such as methane, reside. Huge amounts of methane clathrate exist under the high pressures and cold temperatures of the seafloor, forming a major reservoir of greenhouse gas. Unsurprisingly, some energy companies are investigating ways to tap into this huge reservoir of trapped natural gas.

Other key findings include measurements giving a 30× increase in methane concentration and the conclusion that pore water methane is a massively underestimated carbon reservoir. Note that, when sediment particles get deposited on the seafloor they carry some ocean water with them. Water trapped in this way, scientists call “pore water” because it fills the pores between the sediment grains. Because this water is in contact with methane bearing clathrate ice, it also contains elevated levels of CH4.

In fact, there must be high levels of gas in the water saturating the mud that methane ice is buried in. Otherwise, according to Peter Brewer, ocean chemist at the Monterey Bay Aquarium Research Institute, the hydrate will not be stable. “If you just put a block of methane hydrate on the sea floor it will dissolve really fast,” says Brewer. “The hydrates in sediments have to be in equilibrium with the water around them, which must contain huge amounts of methane. One would guess it is about the same as the amount in the clathrate itself.”

This is why Brewer and his PhD student Xin Zhang, the papers lead author, equipped a remotely piloted submersible with a Raman-based probe to measure methane in place. Raman spectroscopy is well suited to chemical analysis on the ocean floor. The robotic sub can stick its metal probe into the mud next to a hydrate deposit and suck up water, and then a laser beam reveals the amount of methane and other substances in that water. Bottom line: there's a lot more methane down there than is apparent from cores brought to the surface.

A Raman spectroscopy laser on the sea floor.

So are the merchants of doom correct? Could a seafloor eruption of methane cause another episode of rapid warming like that of the PETM or even the more prolonged warming of the recently discovered Middle Eocene Climatic Optimum.? Brewer thinks that a mass releases of sea-floor methane is unlikely to cause a blip in today's climate. More likely would be for any released gas to get digested by bacteria or dissolved into sea water, instead of released to the atmosphere. “It's not a scare story,” says Brewer, in an article on

Other than having oceanographers all atwitter, what do these new findings mean? It means that we have discovered science has a long way to go before it can claim to truly understand the carbon cycle. Particularly the sort of mid term sequestration of carbon represented by methane clathrates, falling as it does between the short term cycle of vegetation growth and decomposition, and the long term cycle of geological sequestration. There is more carbon being cycled through Earth's environment than science knows about—10, 20, even 30 times more than previous estimates in this case. It comes from sources undetected and is consumed by processes unknown. But there is a larger lesson here.

What is important about the work done by Zhang et al. is that they devised better instruments and then actually went out and measured the gas they were studying. In other words they did real science—they didn't just muck about with computer models, or even haul samples back to the lab for measurement. They gathered data about methane ice from where it occurs: on the bottom of the ocean. Real experiment, real observations, real science. If only the twits making doomsday predictions based on their software playthings had as much scientific integrity. But then the whole global warming crisis would fizz away, like a clathrate hauled from its ocean larder.

Be safe, enjoy the interglacial and stay skeptical.

Back to top
Mon Dec 07 2015, 02:35AMQuote
Back to top
Moderators: Admin, Kristen Byrnes, R.Danneskjöld, MMulligan

Jump:     Back to top

Begin New Thread

Quick Reply:


Syndicate this thread: rss 0.92 Syndicate this thread: rss 2.0 Syndicate this thread: RDF
Powered by e107 Forum System
Translate to: French German Italian Spanish Portuguese GTM_LAN_DUTCH Russian Chinese Arabic Korean English