Posts Tagged ‘ocean acidification’

New Papers at SPPI

Monday, August 17th, 2015

Source:  SPPI

Effects of Ocean Acidification and Warming on Corals (Laboratory Studies)

Most of the ocean acidification research conducted to date has focused solely on the biological impacts of declining seawater pH. Fewer studies have investigated the interactive effects of ocean acidification and temperature. This summary examines what has been learned in several of such studies for coral reefs, as reported in various laboratory-based studies on the topic. Contrary to what is widely assumed and reported, the studies reviewed here collectively reveal that many corals will remain unaffected by rising temperatures and atmospheric CO2 concentrations. Furthermore, in contrast to projections, some will likely experience growth and performance benefits.

Antarctic Sea Ice Trends

Noting that Antarctic sea ice may show high sensitivity to any anthropogenic-induced increase in temperature, Watkins and Simmonds (2000)1 analyzed temporal trends in different measures of the sea ice that surrounds Antarctica, using Special Sensor Microwave Imager data obtained from the Defense Meteorological Satellite Program for the nine-year period December 1987-December 1996, in search of the suspected signal. But contrary to what one would expect on the basis of climate model simulations, and especially in light of what climate alarmists of the day described as the unprecedented warming of the past quarter-century, the two scientists observed statistically significant increases in both sea ice area and extent; and when they combined their results with those of the preceding nine-year period (1978-1987), both parameters continued to show increases over that expanded time period. In addition, they found that the 1990s also experienced increases in the length of the sea-ice season.

Historic Trends in Global Sea Level

Periodically, individual scientists and groups of scientists analyze global sets of sea level data to see if there is any indication of a dramatic increase in the mean rate-of-rise of the global ocean surface in response to the supposedly unprecedented warming of the planet over the course of the 20th century and the initial phase of the 21st century, which latter phenomenon the world’s climate alarmists claim should be accelerating global sea level rise and leading to catastrophic coastal flooding throughout the world. Hence, we here provide a brief summary of the findings of several such studies that we have reviewed over the past several years.

 

Robert Ferguson, President

Science and Public Policy Institute

bferguson@sppinstitute.org

202-288-5699

Put the acid on Great Barrier Reef doomsayers

Monday, April 13th, 2015

Source: The Australiancoral-reef-1
by PATRICK MOORE

There is nothing more symbolic of the natural beauty of Australia than the Great Barrier Reef.

This makes it a powerful emotional tool to strike fear into the hearts of citizens. The ?ocean acidification? hypothesis, that corals and shellfish will die due to higher levels of carbon dioxide dissolved in the sea, is often used to stoke those fears.

Here?s why I don?t believe there is a shred of evidence to support these claims.

When the slight global warming that occurred between 1970 and 2000 came to a virtual standstill, the doomsayers adopted ­?climate change?, which apparently means all extreme weather events are caused by human emissions of CO2.

Cold, hot, wet, dry, wind, snow and large hailstones are attributed to humanity?s profligate use of fossil fuels. But the pause in global warming kept on and became embarrassing around 2005. (more…)