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The Persistently Variable “Background” Stratospheric Aerosol Layer and Global Climate Change
An increase in the amount of aerosols in the stratosphere during the past decade has decreased the rate of global warming, and climate model projections neglecting these changes would continue to overestimate the radiative forcing and global warming in coming decades. Expand
Increase in background stratospheric aerosol observed with lidar at Mauna Loa Observatory and Boulder, Colorado - article no. L15808
The stratospheric aerosol layer has been monitored with lidars at Mauna Loa Observatory in Hawaii and Boulder in Colorado since 1975 and 2000, respectively. Following the Pinatubo volcanic eruptionExpand
Emergence of healing in the Antarctic ozone layer
Observations and model calculations together indicate that healing of the Antarctic ozone layer has now begun to occur during the month of September, and a chemically driven increase in polar ozone (or “healing”) is expected in response to this historic agreement. Expand
Rapid photochemical production of ozone at high concentrations in a rural site during winter
Photochemical ozone production near the Earth’s surface is considered to be a summertime, urban phenomenon. However, air-quality measurements in the rural Upper Green River Basin, Wyoming, showExpand
Anatomy of wintertime ozone associated with oil and natural gas extraction activity in Wyoming and Utah
Winter maximum daily 8-hour average (MDA8) ozone concentrations in the Upper Green River Basin, Wyoming (UGRBWY) and the Uintah Basin, Utah (UBUT) have frequently exceeded 100 ppb in January,Expand
Stratospheric Aerosol--Observations, Processes, and Impact on Climate
Interest in stratospheric aerosol and its role in climate have increased over the last decade due to the observed increase in stratospheric aerosol since 2000 and the potential for changes in theExpand
Global volcanic aerosol properties derived from emissions, 1990-2014, using CESM1(WACCM)
Accurate representation of global stratospheric aerosols from volcanic and non-volcanic sulfur emissions is key to understanding the cooling effects and ozone-losses that may be linked to volcanicExpand
Toward a comprehensive global electric circuit model: Atmospheric conductivity and its variability in CESM1(WACCM) model simulations
[1] As an important step in further modeling and understanding the global electric circuit, the Community Earth System Model (CESM1) has been extended to provide a calculation of conductivity in theExpand
Composition and physical properties of the Asian Tropopause Aerosol Layer and the North American Tropospheric Aerosol Layer
Both model and observations indicate a strong gradient of the sulfur-to-carbon ratio from Europe to the Asia on constant pressure surfaces, and the model suggests that emission increases in Asia between 2000 and 2010 led to an increase of aerosol optical depth of the ATAL by 0.002 on average which is consistent with observations. Expand
Recent anthropogenic increases in SO₂ from Asia have minimal impact on stratospheric aerosol
United States. National Oceanic and Atmospheric Administration (NOAA/ESRL-CIRES Graduate Fellowship program)