TagClimate(76)

This document is a technical annex to the U.S. Greenhouse Gas Emissions and Sinks Inventory, outlining the methodologies used to measure and categorize national greenhouse gas emissions from 1990 to 2015. It identifies 'key categories' — the emission sources with the greatest impact on total national greenhouse gas levels, trends, and uncertainty — using standardized IPCC guidelines. The largest emission sources identified include road transportation, coal-fired electricity generation, and natural gas combustion across industrial, residential, and commercial sectors.

This August 2022 report by Cascadia Consulting Group analyzes greenhouse gas emissions across King County, Washington, examining where emissions come from, what is driving trends over time, and how the county can meet its climate goals. The report covers sectors including transportation, electricity, natural gas, solid waste, and land use, tracking data from multiple inventory years and comparing per-capita emissions across jurisdictions. It also models future emissions scenarios to assess the impact of federal, state, and regional policies on reaching reduction targets through 2050.

This July 2022 report from the Mission Possible Partnership outlines a global strategy for reducing aviation's greenhouse gas emissions to net zero by 2050, in line with the 1.5°C climate target. It identifies key milestones, technologies, and investments needed across the aviation value chain, including sustainable aviation fuels and new propulsion systems. The strategy is intended to guide airlines, policymakers, and financial institutions in taking coordinated action this decade.

King County's 2020 Strategic Climate Action Plan (SCAP) is a five-year blueprint outlining the county's priorities for reducing greenhouse gas emissions and preparing for climate change impacts, with a strong emphasis on racial equity and frontline communities. The plan builds on accomplishments since the 2015 SCAP, including an 11 percent reduction in per-person emissions, expanded transit ridership, and increased green building certifications. It is updated every five years and guides collaboration across county departments, cities, community partners, and residents.

King County's 2020 Strategic Climate Action Plan (SCAP), published in May 2021, outlines the county's strategies for reducing greenhouse gas emissions, supporting frontline communities, and preparing for climate change impacts. The plan covers areas including transportation, building energy, green infrastructure, food systems, housing, and environmental justice, with a strong emphasis on equity and community engagement. Note: this document addresses countywide climate policy and does not contain specific content related to Sea-Tac Airport noise policy.

King County's 2020 Strategic Climate Action Plan outlines the county's comprehensive approach to addressing climate change through three main areas: reducing greenhouse gas emissions, supporting sustainable and resilient frontline communities, and preparing for climate change impacts. The plan emphasizes equity and community engagement, particularly for historically underserved populations, and was developed with input from a Climate Equity Community Task Force representing diverse community organizations. It builds on progress made since the county's 2015 climate plan and sets targets and policies across transportation, energy, buildings, food systems, and land use.

A 2021 seminar by DLR researcher Christiane Voigt examines how aviation contributes to climate change through CO2 emissions, contrail cirrus clouds, and NOx gases, with contrail cirrus identified as the largest single warming factor at 57.4 mW m⁻². The presentation outlines strategies to reduce aviation's climate footprint, including the use of alternative fuels, lean combustion technology, and contrail avoidance routing. Findings draw on data from recent aircraft measurement campaigns and observed emission reductions during the 2020 COVID-19 lockdown.