Monthly Archives: November 2017

A Litigious Climate Threatens Science

Litigation is what happens when scientists depart from a search for what is true or what is closer to reality (with mutual respect to other scientists who may disagree with them) to pursue political expediency in order to get their way.

“I’ve worked alongside climate researchers for decades. Almost all of them are ethical, dedicated to science and not particularly political. But some leading figures and organizations in this community are weakening the norms that make science robust. A lawsuit filed in September and recently made public is a case in point.” click here

Introducing the Tropospheric Transient Climate Response Index

“Christy and UAH’s Dr. Richard McNider created a new index: the Tropospheric Transient Climate Response, which is based on the bulk atmosphere. That is a more representative quantity for any impact of increased greenhouse gases.” click here

Satellite Temperatures Consistent Since the Early 1990s

“University of Alabama-Huntsville climate scientists John Christy and Richard McNider found that by removing the climate effects of volcanic eruptions early on in the satellite temperature record it showed virtually no change in the rate of warming since the early 1990s.” click here

Oroville Dam Spillway Repaired? or Not?

“The California Department of Water Resources acknowledged this week that many cracks have appeared in the new concrete of the Oroville Dam spillway, which cost over $500 million to repair.” click here

Senator Ed Markey off-base on climate model certainty

“My experience teaching climate models for the past decade convinces me that Kathleen was right when she said in the hearing: “The extent to which (temperature has risen in response to industrial carbon dioxide) is uncertain.”  This is in large part both because global temperature has been rising steadily, rebounding from a down-turn, since well before industrial gasses were an issue and because a number of natural, decades-long natural fluctuations in temperature, such as the North Atlantic Oscillation and the Pacific Oscillation and its cousin El Niῇo, are so poorly understood and measured.” click here

Solar Powered NF/RO Systems, Tanzania

Owusu-Agyeman I, Shen J, Schäfer AI. Renewable energy powered membrane technology: Impact of pH and ionic strength on fluoride and natural organic matter removal. The Science of the total environment. 2017 Nov 23;621:138-147. doi: 10.1016/j.scitotenv.2017.11.111.

Real water pH and ionic strength vary greatly, which influences the performance of membrane processes such as nanofiltration (NF) and reverse osmosis (RO). Systematic variation of pH (3-12) and ionic strength (2-10g/L as total dissolved solids (TDS)) was undertaken with a real Tanzanian water to investigate how water quality affects retention mechanisms of fluoride (F) and natural organic matter (NOM). An autonomous solar powered NF/RO system driven by a solar array simulator was supplied with constant power from a generator. An open NF (NF270) and a brackish water RO (BW30) membrane were used. A surface water with a very high F (59.7mg/L) and NOM (110mgC/L) was used. Retention of F by NF270 was <20% at pH<6, increased to 40% at pH6, and 60-70% at pH7-12, indicating a dominance of charge repulsion while being ineffective in meeting the guideline of 1.5mg/L. Increase in ionic strength led to a significant decline in retention of F (from 70 to 50%) and electrical conductivity (from 60 to 10%) by NF270, presumably due to charge screening. In contrast, BW30 retained about 50% of F at pH3, >80% at pH4, and about 99% at pH >5, due to the smaller pore size and hence a more dominant size exclusion. In consequence, only little impact of ionic strength increase was observed for BW30. The concentration of NOM in permeates of both NF270 and BW30 were typically >2mg/L. This was not affected by pH or ionic strength due to the fact that the bulk of NOM was rejected by both membranes through size exclusion. The research is carried out in the context of providing safe drinking water for rural and remote communities where infrastructure is lacking, and water quality varies significantly. While other studies focus on energy fluctuations, this research emphasises on feed water quality that affects system performance and may alter due to a number of environmental factors.

NOAA Science Corrupted by Politics

“Objective science once conducted by the National Oceanic and Atmospheric Administration (NOAA) was coopted by the Obama administration to push anti-fossil energy policies under the guise of CO2 influences on climate change and ocean acidification. Just as they got caught by a whistleblower fudging ocean temperature records in advance of 2015 U.N. Paris Climate talks, they also actively played politics to garner media alarm attributing CO2 emissions to invalidated claims of impacts upon aquatic ecosystems.” click here