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Articles by Michael Prather
Trade-offs in aviation impacts on climate favour non-CO2 mitigation - Nature
Abstract Climate assessments of civil aviation1,2 have consistently quantified the dominant climate-forcing components: (1) CO2 emissions, (2) NOx (NO + NO2) emissions and (3) persistent contrails. All three components exert a positive radiative forcing (RF) and lead to climate warming of similar magnitudes. The aviation community is actively seeking to reduce its climate footprint through advanced engine technologies, more sustainable aviation fuel and optimal routing plans3,4,5,6,7,8,9,10,11,12.
Resetting tropospheric OH and CH4 lifetime with ultraviolet H2O absorption
Editor’s summary Methane is the second most important anthropogenic greenhouse gas after carbon dioxide, so understanding its atmospheric chemistry is essential for the development of models to successfully project climate change. Current models uniformly underestimate the atmospheric lifetime of methane because they uniformly overestimate how much hydroxyl radical (OH), the chemical species responsible for most of the destruction of methane, the atmosphere contains.
A multi-model assessment of the Global Warming Potential of hydrogen - Communications Earth & Environment
Abstract With increasing global interest in molecular hydrogen to replace fossil fuels, more attention is being paid to potential leakages of hydrogen into the atmosphere and its environmental consequences. Hydrogen is not directly a greenhouse gas, but its chemical reactions change the abundances of the greenhouse gases methane, ozone, and stratospheric water vapor, as well as aerosols.
LADWP Will Continue to Protect Sensitive Tribal Areas and Work with Local Tribal Representatives at Owens Lake - Sierra Wave: Eastern Sierra News
By on in Air Pollution, Great Basin Unified Air Polution Control District, LADWP, Press Release Sept. 30, 2022 (LOS ANGELES) — On September 27, 2022, the Sacramento Superior Court issued a ruling that rejected Great Basin Unified Air Pollution Control District’s (Great Basin) argument that it had unlimited regulatory control over LADWP. The Court also refused to uphold more than $1 million in fines assessed by Great Basin that would have been paid by LADWP customers.
State Commission Offers Overwhelming Support to Acknowledge Indigenous History at Owens Lake - Sierra Wave: Eastern Sierra News
By on in Bureau of Land Management (BLM), Indigenous, Inyo County, Native American Tribe, Press Release In a unanimous vote, the nine members of the California State Historical Resources Commission affirmed support for nominating Patsiata Tübiji Nüümü-na Awaedu Ananisudüheina (Patsiata Historic District) to the National Register of Historic Places. “Patsiata” is the Indigenous name for Owens Lake, and the nomination has been prepared by the Patsiata Tribal Oversight Committee (PTOC).
Lone Pine Paiute-Shoshone Reservation Earth Day Event - Sierra Wave: Eastern Sierra News
Great fun for family. Chad and Riley Nosala prepare to pick up trash on Reservation roadways. The Lone Pine Paiute-Shoshone Reservation invites the community to participate in the 8th Annual Lone Pine Tribal Earth Day Celebration on Saturday, April 17, 2021 from 9:00AM-12:30PM.
Don’t rush into a hydrogen economy until we know all the risks to climate [GasTransitions]
The use of hydrogen as a fuel could make global warming worse by affecting chemical reactions in the atmosphere, write researchers Michael Prather and Graeme Pearman. They argue that more research needs to be done before we put all our cards on a hydrogen economy. Article originally published on The Conversation. [Gas Transitions Volume 1, Issue 8]
Overexplaining or underexplaining methane’s role in climate change
Methane lies at the nexus of climate and air quality, being both a major anthropogenic greenhouse gas—causing about one-half of the warming of carbon dioxide—and a precursor of tropospheric ozone pollution. Over the industrial era, atmospheric methane abundances rose from about 720 parts per billion (ppb) (10−9 mole fraction) to over 1,850 ppb today. Humans have driven this change largely through agriculture, waste, and fossil fuel emissions.
Don't rush into a hydrogen economy until we know all the risks to our climate
Alexander Kirch/Shutterstock By Graeme Pearman, University of Melbourne and Michael Prather, University of California, Irvine There is global interest in the potential for a hydrogen economy, in part driven by a concern over climate change and the need to move away from fossil fuels.
Don't rush into a hydrogen economy until we know all the risks to our climate
There is global interest in the potential for a hydrogen economy, in part driven by a concern over climate change and the need to move away from fossil fuels. This month, for example, Australia’s national science agency, CSIRO, released a report showing the use of clean hydrogen as a fuel could slash aviation emissions, including a complete transition from conventional jet fuel around 2050.
Large changes in biomass burning over the last millennium inferred from paleoatmospheric ethane in polar ice cores
Cultural and scientific challenges suggest that the notion of restoring significant amounts of carbon to soils is an overly optimistic and inherently flawed proposition.
Letter: Responding to LADWP and commercial ranch leases
Response to KSRW’s May 31 article entitled ‘LADWP offers update on status commercial ranch leases in Mono.’ The current question in the Eastern Sierra is, “Should the City of Los Angeles dry up LADWP grazing leases in the Crowley Lake area of Mono County – lands where, for over 150 years, ranchers have created meadows and wetlands that support a rich variety of wildlife including our Bi-state sage grouse?” The drying up of 6,000 acres (nearly 10 square miles) of irrigated meadows will morph...
The Seasonality and Geographic Dependence of ENSO Impacts on US Surface Ozone Variability
We examine the impact of El Niño-Southern Oscillation (ENSO) on surface ozone abundance observed over the continental United States (US) during 1993-2013. The monthly ozone decreases (increases) during El Niño (La Niña) years with amplitude up to 1.8?ppb per standard deviation of Niño 3.4 index. The largest ENSO influences occur over two southern US regions during the fall when the ENSO develops and over two western US regions during the winter to spring after the ENSO decays.
Michael Prather - Chatham Star Tribune: Obituaries
He was born on December 25, 1976, in Pittsylvania County, and was the the son of Ricky Lynn Prather and the late Rosa Francis Prather. Michael was a loving husband and father who will be greatly missed. He enjoyed cars, sports, amusement parks and cherished being a father and spending time with his family.
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