Volume 23: July 2020

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Last 15 Postings

Equilibrium Climate Sensitivity is Over-estimated in a Key CMIP6 Model
(6 July 2020)
The latest version of a key CMIP6 climate model is demonstrated to perform worse than its predecessor in estimating the long-term warming response to higher levels of CO2 during the early Eocene climate optimum...
Fish Diversity is Unaffected by Ocean Acidification at a Natural CO2 Vent Site (3 July 2020)
Researchers report that "nekton-benthic fish assemblages from CO2 vents seem to be able to cope with ocean acidification under the CO2 emission scenarios forecasted for the end of the century, by forming well-structured fish assemblages." Continuing, they say "because of their behavioral and physiological features (mobile habitus, capacity of acid-base regulation) and indirect effects at CO2 vents (i.e., greater food availability), fish can balance the potential higher energetic cost to live under high pCO2/low pH environments without major changes in community structure." And that finding is great news and shows predictions of widespread fish decline and even extinction due to rising atmospheric CO2 are wildly incorrect...

Plant Growth Database (2 July 2020)
Our latest result of plant growth responses to atmospheric CO2 enrichment obtained from experiments described in the peer-reviewed scientific literature is for Potato (Ahmadi Lahijani et al., 2019). To access the entire database, click here.
A CO2-induced Herbivory Decline of the Corn Leaf Aphid on Barley (1 July 2020)
Aphids feeding on elevated CO2-grown barley seedlings experienced "significantly decreased body weight, fecundity, and intrinsic rate of population increase, which may result in decreased population abundance under elevated atmospheric CO2"...

Plant Growth Database (30 June 2020)
Our latest result of plant growth responses to atmospheric CO2 enrichment obtained from experiments described in the peer-reviewed scientific literature is for Sweet Pepper (Pérez-Jiménez et al., 2019). To access the entire database, click here.

Effects of Elevated CO2 and Heat Stress on Tomato Seedlings
(29 June 2020)
Higher levels of CO2 impacted genes associated with hydrogen peroxide accumulation that helped decrease stomatal aperture, which ultimately "played a crucial role in elevated CO2-induced heat tolerance by maintaining a balance between water retention and heat loss"...
Transgenerational Plasticity of Marine Bivalves to Ocean Acidification (26 June 2020)
A recent review paper examining the impacts of ocean acidification on five bivalve species reveals that each species experienced positive transgenerational responses to an elevated pCO2 scenario projected for the year 2100...

Plant Growth Database (25 June 2020)
Our latest result of plant growth responses to atmospheric CO2 enrichment obtained from experiments described in the peer-reviewed scientific literature is for Durum Wheat (Thompson et al., 2019). To access the entire database, click here.
Interactive Effects of CO2 and Temperature on Cassava (24 June 2020)
This study puts to rest alarmist concerns that cassava plants will contain greater (and potentially deadly) concentrations of cyanide in the future because of rising atmospheric CO2....

Plant Growth Database (23 June 2020)
Our latest result of plant growth responses to atmospheric CO2 enrichment obtained from experiments described in the peer-reviewed scientific literature is for Foxtail Millet (Li et al., 2019). To access the entire database, click here.

The Response of Two Maize Varieties to CO2 Enrichment
(22 June 2020)
Climate alarmists have long claimed that C4 plants like maize are unresponsive to CO2 enrichment, yet more and more research -- like that observed here -- is falsifying that narrative, showing that yields of many C4 crops will likely experience significant gains in the future...
Long-term Carbon Accumulation Rates of Two Alaska Peatlands (19 June 2020)
Global warming alarmists contend rising temperatures should be degrading permafrost peatlands and releasing long-sequestered carbon back into the atmosphere. Real-world data based on the work of Taylor et al. reveal the opposite is occurring -- carbon accumulation rates have increased three-fold during the era of modern warming...

Plant Growth Database (18 June 2020)
Our latest result of plant growth responses to atmospheric CO2 enrichment obtained from experiments described in the peer-reviewed scientific literature is for White Mangrove (Jacotot et al., 2018). To access the entire database, click here.

A 423-year Moisture Reconstruction for San Luis Potosi, Mexico
(17 June 2020)
In examining the record, its observed cyclic nature, coupled with what appears to be an absence of any trend in the data, suggests that rising concentrations of atmospheric CO2 have had no measurable impact on droughts or pluvials in the region...

Plant Growth Database (16 June 2020)
Our latest result of plant growth responses to atmospheric CO2 enrichment obtained from experiments described in the peer-reviewed scientific literature is for Wheat (Li et al., 2019). To access the entire database, click here.

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Petition of the Center for the Study of Carbon Dioxide and Global Change to the United States Environmental Protection Agency for Repeal of EPA's 2009 Endangerment Finding
On March 9, the Center for the Study of Carbon Dioxide and Global Change filed a petition with the United States Environmental Protection Agency, asking the agency to repeal its Endangerment Finding for Greenhouse Gases Under Section 202(a) of the Clean Air Act. Read a press release associated with this filing. A pdf version of the petition can be downloaded here for review.

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