Ocean acidification

This thread is for discussion of ocean acidification, its causes, properties and ramifications.

Leave a Reply

12 Comment threads
12 Thread replies
Most reacted comment
Hottest comment thread
5 Comment authors
Notify of

The PH Scale

0 – 14,

7 is neutral,

7 -14 is alkaline,

0 – 7 is acid,

the ocean is 8+

Go figger!


Acid Seas, Back to Basic

Dennis Ambler, February 2010

Richard C (NZ)

Huff Post is really getting silly now.

Climate Science Round-Up: Ocean Fertilization (or Climate Liposuction)


Ocean Acidification Database

CO2 Science

Richard C (NZ)

NGO pleads for $15 billion “ocean acidification” monitoring system

Posted on November 1, 2010 by Anthony Watts

Via Eurekalert, from the NGO Partnership for Observation of the Global Oceans (POGO), a press release that says, “panic! please send money”. Here’s the punch line:

The Foundation says the average level of pH at the ocean surface has dropped from 8.2 to 8.1 units, “rendering the oceans more acidic than they have been for 20 million years,”

Note that any pH lower than 7.0 is considered “acidic”. Distilled (pure) water has a pH of 7.0. Right now the ocean with a pH of 8.1 is considered “basic”.


$15 billion could buy an awful lot of litmus paper.

Richard C (NZ)

Are oceans becoming more acidic and is this a threat to marine life?

By Dr J Floor Anthoni (2007)



This looks like a really good site. Lots of useful information.

Richard C (NZ)

Yes, RT quoted it in a reply to Chris that was more educational than my sarc.


Lots of marine issues in an NZ context, I’ll put under “climate” “blogs” eventually.


… and a lot of rubbish as well. I think the author is a bit out of his depth.


The great men of Otago (Doug Mackie and Keith Hunter) are planning an 18 part series on Ocean Acidification over at Skeptical Science.


As Mackie points out at Hot topic

“Denialists have not touched ocean acidification because they don’t understand it.”

No Doug, that’s right.
Actually, we haven’t had time to deal with this particular issue, and I am so glad that the great NZers in Otago have managed to lay claim to this last bastion of CAGW

Don’t worry guys, the Zulus are coming.

Richard C (NZ)

NIWA’s acidic ocean ————————————————————————————————————————— New Climate Change Atlas for our massive ocean real estate Monday, 3 October 2011, 9:22 am Press Release: NIWA The seas surrounding New Zealand could warm by up to 4oC in the coming century. The last ten years of monthly monitoring results have shown an increase in acidity in Subantarctic waters off Otago. This is probably due to the recorded increase in atmospheric CO2 and subsequent CO2 uptake by the ocean. This trend is consistent with that observed in long-term time series studies in other regions of the ocean. Ocean acidification has been shown to affect reproduction, behavior, and physiological functions of some species. Background facts • surface waters will warm, freshen (i.e., become less salty), and so become less dense. This will increase the density gradient between surface and deeper waters (i.e., stratification), which will reduce the upward supply of plant nutrients to the surface from deeper waters • the surface layer where the phytoplankton live will become thinner and so the phytoplankton will receive more light • the warmer ocean will contain less dissolved oxygen, and the volume of the mid-water column oxygen-deficient zones will increase •… Read more »

Richard C (NZ)

The seas surrounding New Zealand could warm by up to 4oC in the coming century.

Are they serious? This has to be one of the most outlandish claims I have seen in a long time.

Richard C (NZ)

A team led by Dr. Daniel Mayor, an Independent Research Fellow at the University of Aberdeen’s Oceanlab, investigated how future global warming and ocean acidification scenarios affected the health of copepod eggs.

Unlike many other climate-change studies, they repeated their experiment at a later date and found different results.

Dr. Mayor said: “Both of our experiments indicated that the health of copepod eggs remains unaffected when they are exposed to ocean acidification levels predicted for the end of the 21st century. This is great news.


Jim Mck

I quess it is not surprising to see articles like this appearing ahead of Doha. I am sure Dorothee will have earned a ticket. Headline: “Rising acidity levels threaten ocean’s food chain, study finds” http://www.smh.com.au/environment/rising-acidity-levels-threaten-oceans-food-chain-study-finds-20121126-2a23p.html After 80% of the article details ridiculous claims about absorption of ACO2 causing dangerous rises in ocean acidity, we find that has nothing to do with the research. Instead: “We know that the seawater becomes more corrosive below a certain depth which occurs at around 1,000m. However, at one of our sampling sites, we discovered that this point was reached at 200m depth. Marine snails – pteropods – live in this top layer of the ocean,” Bednarek said. Climate models forecast more intense winds in the Southern Ocean this century if CO2 continues to increase, which will make the mixing of deep water with more [should that be less]acidic surface waters more frequent, the study said. This will make calcium carbonate reach the upper surface layers of the Southern Ocean by 2050 in winter and by 2100 all year round, said the study’s co-author Dorothee Bakker, research officer at the University of East Anglia.” Seemingly any piece of… Read more »

Mike Jowsey

University of East Anglia
Ahhhh…. So.

Richard C (NZ)

The best continuous long-term record of observed pH is the Monterey Bay Aquarium from 1996-present (from The Hockey Schtick):



Multiple plots of the pH spot check data vs. time, for the period 1995 – present as
measured in the incoming water to the Monterey Bay Aquarium drawn from a
~50ft depth. Each of the following pages contains a 10-year period of the data,
with the monthly mean ± standard error of the spot checks being presented. The
pH was analyzed using the method outlined with this project. Both short-term
seasonal changes and longer-term events, such as El Nino, are present in the


Theory, meet reality.

Richard C (NZ)

Touchy Feely Science – one chart suggests there’s a ‘pHraud’ in omitting Ocean Acidification data in Congressional testimony


The chart:

comment image?w=720&h=554

Richard C (NZ)

NOAAgate: how ‘ocean acidification’ could turn out to be the biggest con since Michael Mann’s Hockey Stick by James Delingpole, 23 Dec 2014 Christmas has come a couple of days early for climate sceptics, in what may well prove to be one of the biggest blows to the Global Warming religion since Climategate. This time the pillar of green faith which has been rudely dismantled by sceptical investigators is an alleged phenomenon known as “ocean acidification.” For years this has been touted by environmentalists as possibly the greatest threat to the planet after “global warming.” According to Jane Lubchenko, the head of the National Oceanic and Atmospheric Administration (NOAA), it is “climate change’s equally evil twin” because of the disastrous consequences it may have for everything from the navigational systems of spawning salmon to the health of coral reefs. Ocean acidification is said to be caused when excess atmospheric carbon dioxide is absorbed by the sea, reducing its pH levels to make it more acidic. But, as Watts Up With That reports new evidence unearthed by an inquisitive graduate student suggests that “ocean acidification” may be a scientific fraud to rank with the… Read more »

Richard C (NZ)

‘What if Obama’s climate change policies are based on pHraud?’ Marita Noon “Ocean acidification” (OA) is receiving growing attention. While someone who doesn’t follow climate change science might think OA is a stomach condition resulting from eating bad seafood, OA is claimed to be a phenomenon that will destroy ocean life—all due to mankind’s use of fossil fuels. It is a foundational theory upon which the global warming/climate change narrative is built. […] Within the Quest text is a link to a chart by Dr. Richard A. Feely, who is a senior scientist with the Pacific Marine Environmental Laboratory (PMEL)—which is part of the National Oceanic and Atmospheric Administration (NOAA). Feely’s climate-crisis views are widely used to support the narrative. Feely’s four-page report: Carbon Dioxide and Our Ocean Legacy, offered on the NOAA website, contains a similar chart. This chart, titled “Historical & Projected pH & Dissolved Co2,” begins at 1850. Feely testified before Congress in 2010—using the same data that shows a decline in seawater pH (making it more acidic) that appears to coincide with increasing atmospheric carbon dioxide. In 2010, Feely received the $100,000 cash prize from the Heinz Family Foundation… Read more »

Richard C (NZ)

Sabine’s excuse for using modeled data over real data? – ‘earlier data is not of “sufficient quality.”‘

December 25, 2014. WUWT reader Peter Gadiel writes:

After reading of the critique of Sabine’s exclusion of the historical data on ocean acidification I emailed him. I thought his response might be of interest to you at WUWT. He says the earlier data is not of “sufficient quality.”


Richard C (NZ)

Evidence discovered that ‘ocean acidification’ scare may be as fraudulent as ‘global warming’

Written by Thomas Lifson, American Thinker on 26 December 2014.