Now showing items 21-40 of 42

• #### Implications of the Recent Reductions in Natural Gas Prices for Emissions of $CO_2$ from the US Power Sector ﻿

(American Chemical Society, 2012)
$CO_2$ emissions from the US power sector decreased by 8.76% in 2009 relative to 2008 contributing to a decrease over this period of 6.59% in overall US emissions of greenhouse gases. An econometric model, tuned to data ...
• #### An inventory of primary air pollutants and CO2 emissions from cement production in China, 1990–2020 ﻿

(Elsevier BV, 2011)
Direct emissions of air pollutants from the cement industry in China were estimated by developing a technology-based methodology using information on the proportion of cement produced from different types of kilns and the ...
• #### Meteorologically Defined Limits to Reduction in the Variability of Outputs from a Coupled Wind Farm System in the Central US ﻿

(Elsevier, 2013-08-26)
Studies suggest that onshore wind resources in the contiguous US could readily accommodate present and anticipated future US demand for electricity. The problem with the output from a single wind farm located in any ...
• #### Multiple effects and uncertainties of emission control policies in China: Implications for public health, soil acidification, and global temperature ﻿

(Elsevier BV, 2011)
Policies to control emissions of criteria pollutants in China may have conflicting impacts on public health, soil acidification, and climate. Two scenarios for 2020, a base case without anticipated control measures and a ...
• #### A nested grid formulation for chemical transport over Asia: Applications to CO ﻿

(Wiley-Blackwell, 2004)
A global three-dimensional chemical transport model (GEOS-CHEM) was modified to permit treatment of a limited spatial regime with resolution higher than that adopted for the global background. Identified as a one-way nested ...
• #### Optimal Integration of Offshore Wind Power for a Steadier, Environmentally Friendlier, Supply of Electricity in China ﻿

(Elsevier, 2013)
Demand for electricity in China is concentrated to a significant extent in its coastal provinces. Opportunities for production of electricity by on-shore wind facilities are greatest however in the north and west of the ...
• #### Ozone Air Quality During the 2008 Beijing Olympics: Effectiveness of Emission Restrictions ﻿

(Copernicus Publications, 2009)
A series of aggressive measures was launched by the Chinese government to reduce pollutant emissions from Beijing and surrounding areas during the Olympic Games. Observations at Miyun, a rural site 100 km downwind of the ...
• #### Patterns in atmospheric carbonaceous aerosols in China: emission estimates and observed concentrations ﻿

(Copernicus GmbH, 2015)
China is experiencing severe carbonaceous aerosol pollution driven mainly by large emissions resulting from intensive use of solid fuels. To gain a better understanding of the levels and trends of carbonaceous aerosol ...
• #### Potential for Wind-Generated Electricity in China ﻿

(American Association for the Advancement of Science, 2009)
Wind offers an important alternative to coal as a source of energy for generation of electricity in China with the potential for substantial savings in carbon dioxide emissions. Wind fields derived from assimilated ...
• #### Prospects for shale gas production in China: Implications for water demand ﻿

(Elsevier BV, 2016)
Development of shale gas resources is expected to play an important role in China's projected transition to a low-carbon energy future. The question arises whether the availability of water could limit this development. ...
• #### Quantifying the Uncertainties of a Bottom-Up Emission Inventory of Anthropogenic Atmospheric Pollutants in China ﻿

(European Geosciences Union, 2011)
The uncertainties of a national, bottom-up inventory of Chinese emissions of anthropogenic $SO_2$, $NO_x$, and particulate matter (PM) of different size classes and carbonaceous species are comprehensively quantified, ...
• #### Recent Changes in Particulate Air Pollution over China Observed from Space and the Ground: Effectiveness of Emission Control ﻿

(American Chemical Society (ACS), 2010)
The Chinese government has moved aggressively since 2005 to reduce emissions of a number of pollutants including primary particulate matter (PM) and sulfur dioxide (SO2), efforts inadvertently aided since late 2008 by ...
• #### Regional CO pollution and export in China simulated by the high-resolution nested-grid GEOS-Chem model ﻿

(Copernicus GmbH, 2009)
An updated version of the nested-grid GEOS-Chem model is developed allowing for higher horizontal (0.5°×0.667°) resolution as compared to global models. CO transport over a heavily polluted region, the Beijing-Tianjin-Hebei ...
• #### Regional CO Pollution in China Simulated by the High-Resolution Nested-Grid GEOS-Chem Model ﻿

(Copernicus Publications, 2009)
An updated version of the nested-grid GEOS-Chem model is developed allowing for higher horizontal (0.5°×0.667°) and vertical resolution as compared to global models. CO transport over a heavily polluted region, the ...
• #### Seasonal variability of NOx emissions over east China constrained by satellite observations: Implications for combustion and microbial sources ﻿

(Wiley-Blackwell, 2007)
Observations of tropospheric column densities of NO2 obtained from the Global Ozone Monitoring Experiment (GOME) for a 3-year period (1997, 1998, and 2000) are used to derive average seasonal variations in surface emissions ...
• #### Soil Acidification in China: Is Controlling SO 2 Emissions Enough? ﻿

(American Chemical Society (ACS), 2009)
Facing challenges of increased energy consumption and related regional air pollution, China has been aggressively implementing flue gas desulfurization (FGD) and phasing out small inefficient units in the power sector in ...
• #### Thermodynamic disequilibrium of the atmosphere in the context of global warming ﻿

(Springer Science + Business Media, 2015)
The atmosphere is an example of a non-equilibrium system. This study explores the relationship among temperature, energy and entropy of the atmosphere, introducing two variables that serve to quantify the thermodynamic ...
• #### Top-down estimate of China's black carbon emissions using surface observations: Sensitivity to observation representativeness and transport model error ﻿

(Wiley-Blackwell, 2013)
This study examines the sensitivity of “top-down” quantification of Chinese black carbon (BC) emissions to the temporal resolution of surface observations and to the transport model error associated with the grid resolution ...
• #### Traffic restrictions associated with the Sino-African summit: Reductions of NOx detected from space ﻿

(Wiley-Blackwell, 2007)
Aggressive measures were instituted by the Beijing municipal authorities to restrict vehicular traffic in the Chinese capital during the recent Sino-African Summit. We show that reductions in associated emissions of NOx ...
• #### Variations of $O_3$ and CO in Summertime at a Rural Site Near Beijing ﻿

(Copernicus Publications on behalf of the European Geosciences Union, 2008)
Large intra-season differences in mixing ratios of CO and $O_3$ were detected at Miyun, a rural site north of Beijing, in summer 2006. Despite an increase in mean daytime mixing ratio of CO from 500 ppbv in June to 700 ...