Saturday, August 13, 2005
***Stern, A Three Layer Atmosphere Ocean Model of Global Climate Change
Using sophisticated multicointegration econometric modelling, Stern suggests that climate changes from anthropogenic forces occur slowly but continue warming over a long time. For example, the level of warming from anthropogenic forces to date is 3.25K, only 1/2 of which will occur in the first 100 years.
***Amundsen, Baldursson, Mortensen, Price Volatility and Banking in Green Certificate Markets
Banking of green certificates for renewable power improves the market by reducing average price, decreasing market volatility, and creating speculation that smoothes the market. Banking of Green Certificates
For a full list with abstracts, see New Economics Papers: nepenv_20050725_13_papers
For a full list with abstracts, Download nepenv_20050725_13_papers.html
Friday, August 12, 2005
Research published on line by the National Academy of Science indicates that carbon sinks lose their ability to absorb CO2 over time.
Open Access Text: Evolution of Carbon Sinks in a Changing Climate
Three Science reports (online, not yet published) address weather probe/satellite data previously interpreted to show cooling of the troposphere in the Tropics (rather than the expected warming) during the last two decades. This data had led to some to question the validity of current climate models because tropospheric warming should accompany surface warming.
The reports all address different aspects of the problem,
but all three indicate the troposphere is warming,
not cooling, and current climate change models are sound.
Santer et al conclude that the models have excellent agreement with observed surface and tropospheric temperatures on the monthly and annual time scales. Partial agreement with observed tropospheric temperatures over the decadal timescale together with empirical evidence of increases in tropospheric water vapor and tropopause height
suggest warming, not cooling, of the free troposphere.
Link: Santer, et al abstract -
Amplification of Surface Temperature Trends
and Variability in the Tropical Atmosphere
Mears and Wentz correct the satellite data for biases caused by satellite angle and diurnal cycle (time of day). Based on their correction method, global tropospheric temperatures are increasing at roughly .193 K per decade instead of .087 K per decade previously estimated;
tropical tropospheric temperatures are increasing at 9 K per decade instead of the slight cooling estimated using a different correction method. Mears and Wentz Abstract
Sherwood, Lanzante, and Meyer report that the bias caused by solar heating (time of day or diurnal cycle) has lessened over time, even though
corrections made to account for that bias have not. Taking this into account, they calculated a .14 C warming per decade in the tropical troposphere, rather than cooling.
Sherwood, Lanzante, and Meyer abstract
The Oregon Supreme Court yesterday decided that a state decision preventing Boise Cascade's from logging 9 acres of a 40 acre parcel in order to protect the spotted owl did not violate either the Oregon or the US Constitution.
The Court adopted "no economically viable use" of the "whole parcel" as the test of regulatory takings under the Oregon Constitution.
The Court also decided that there was no taking under the US constitution. The Court determined that there was no Lucas taking because of the whole parcel rule, no taking under Agins because Lingle eliminated the substantive due process test, and no taking under Loretto because a rule that does not allow a property owner all uses of its property is different than providing an easement to a third party who installs equipment. The Court also upheld the trial court's resolution of the Penn Central question as a matter of law; no jury is required to decide whether regulatory action constitutes a taking under Penn Central, if there are no undisputed historical facts.
Thursday, August 11, 2005
The Georgetown Regulatory Takings Conference is on October 27-28, 2005:
Georgetown Environmental Law and Policy Institute brochure
Tuesday, August 9, 2005