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- Mathematics, Physics, and Computer Science Faculty Articles and Research (5)
- Air Quality Protection in the West (November 27-28) (3)
- Energy Field Tour 2003 (August 11-16) (3)
- Shifting Baselines and New Meridians: Water, Resources, Landscapes, and the Transformation of the American West (Summer Conference, June 4-6) (2)
- The Future of Natural Resources Law and Policy (Summer Conference, June 6-8) (2)
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- The Promise and Peril of Oil Shale Development (February 5) (2)
- All Faculty Scholarship for the College of the Sciences (1)
- Biology, Chemistry, and Environmental Sciences Faculty Articles and Research (1)
- Center for Global Health Publications (1)
- Global Issues in Public Health (1)
- Masters Theses & Specialist Projects (1)
- Research outputs 2014 to 2021 (1)
- Shale Plays in the Intermountain West: Legal and Policy Issues (November 12) (1)
- Technical Reports (1)
- The Climate of Environmental Justice: Taking Stock (March 16-17) (1)
Articles 1 - 26 of 26
Full-Text Articles in Physical Sciences and Mathematics
Possible Overestimation Of Nitrogen Dioxide Outgassing During The Beirut 2020 Explosion, Ashraf Farahat, Nayla El-Kork, Ramesh P. Singh, Feng Jing
Possible Overestimation Of Nitrogen Dioxide Outgassing During The Beirut 2020 Explosion, Ashraf Farahat, Nayla El-Kork, Ramesh P. Singh, Feng Jing
Biology, Chemistry, and Environmental Sciences Faculty Articles and Research
On 4 August 2020, a strong explosion occurred near the Beirut seaport, Lebanon and killed more than 200 people and damaged numerous buildings in the vicinity. As Amonium Nitrate (AN) caused the explosion, many studies claimed the release of large amounts of NO2 in the atmosphere may have resulted in a health hazard in Beirut and the vicinity. In order to reasonably evaluate the significance of NO2 amounts released in the atmosphere, it is important to investigate the spatio-temporal distribution of NO2 during and after the blast and compare it to the average day-to-day background emissions from …
Long-Term Aerosol Trends And Variability Over Central Saudi Arabia Using Optical Characteristics From Solar Village Aeronet Measurements, Mohammed Al Otaibi, Ashraf Farahat, Bassam Tawabini, M. Hafidz Omar, Emad Ramadan, Abdelgadir Abuelgasim, Ramesh Singh
Long-Term Aerosol Trends And Variability Over Central Saudi Arabia Using Optical Characteristics From Solar Village Aeronet Measurements, Mohammed Al Otaibi, Ashraf Farahat, Bassam Tawabini, M. Hafidz Omar, Emad Ramadan, Abdelgadir Abuelgasim, Ramesh Singh
Mathematics, Physics, and Computer Science Faculty Articles and Research
Natural and anthropogenic aerosols over the Kingdom of Saudi Arabia (KSA) play a major role in affecting the regional radiation budget. The long-term variability of these aerosols’ physical and optical parameters, including aerosol optical depth (AOD) and Ångström exponent (α), were measured at a location near central KSA using the Solar Village (SV) AERONET (Aerosol Robotic Network) station during the period December 1999–January 2013. The AERONET measurements show an overall increase in AOD on an annual basis. This upward trend is mainly attributed to a prolonged increase in the monthly/seasonal mean AOD during March–June and during August– September. In contrast, …
Studying The Impact On Urban Health Over The Greater Delta Region In Egypt Due To Aerosol Variability Using Optical Characteristics From Satellite Observations And Ground-Based Aeronet Measurements, Wenzhao Li, Elham Ali, Islam Abou Al-Magd, Moustafa Mohamed Mourad, Hesham El-Askary
Studying The Impact On Urban Health Over The Greater Delta Region In Egypt Due To Aerosol Variability Using Optical Characteristics From Satellite Observations And Ground-Based Aeronet Measurements, Wenzhao Li, Elham Ali, Islam Abou Al-Magd, Moustafa Mohamed Mourad, Hesham El-Askary
Mathematics, Physics, and Computer Science Faculty Articles and Research
This research addresses the aerosol characteristics and variability over Cairo and the Greater Delta region over the last 20 years using an integrative multi-sensor approach of remotely sensed and PM10 ground data. The accuracy of these satellite aerosol products is also evaluated and compared through cross-validation against ground observations from the AErosol RObotic NETwork (AERONET) project measured at local stations. The results show the validity of using Multi-angle Imaging Spectroradiometer (MISR) and Moderate Resolution Imaging Spectroradiometer (MODIS) sensors on the Terra and Aqua platforms for quantitative aerosol optical depth (AOD) assessment as compared to Ozone Monitoring Instrument (OMI), Sea-viewingWide Field-of-view …
Spatio-Temporal Pattern Estimation Of Pm2.5 In Beijing-Tianjin-Hebei Region Based On Modis Aod And Meteorological Data Using The Back Propagation Neural Network, Xialing Ni, Chunxiang Cao, Yuke Zhou, Xianghui Cui, Ramesh Singh
Spatio-Temporal Pattern Estimation Of Pm2.5 In Beijing-Tianjin-Hebei Region Based On Modis Aod And Meteorological Data Using The Back Propagation Neural Network, Xialing Ni, Chunxiang Cao, Yuke Zhou, Xianghui Cui, Ramesh Singh
Mathematics, Physics, and Computer Science Faculty Articles and Research
With the economic growth and increasing urbanization in the last three decades, the air quality over China has continuously degraded, which poses a great threat to human health. The concentration of fine particulate matter (PM2.5) directly affects the mortality of people living in the polluted areas where air quality is poor. The Beijing-Tianjin-Hebei (BTH) region, one of the well organized urban regions in northern China, has suffered with poor air quality and atmospheric pollution due to recent growth of the industrial sector and vehicle emissions. In the present study, we used the back propagation neural network model approach to estimate …
Outdoor Air Quality, Taylor Curley
Outdoor Air Quality, Taylor Curley
Global Issues in Public Health
Outdoor air quality is a significant issue for the entire world. It affects any and all people, but is more of an issue in low-income countries and among people that are more susceptible to respiratory issues such as young children, pregnant women, the elderly, and people who already suffer from respiratory problems like asthma. Poor air quality is caused by the burning of fossil fuels which releases particles and chemicals into the air like carbon dioxide, particulate matter, and nitrogen to name a few. It can cause multiple health issues such as respiratory problems to people who are exposed to …
Contributions Of Wood Smoke And Vehicle Emissions To Ambient Concentrations Of Volatile Organic Compounds And Particulate Matter During The Yakima Wintertime Nitrate Study, Graham Vanderschelden, Benjamin De Foy, Courtney Herring, Susan D. Kaspari, Tim Vanreken, Bertram Jobson
Contributions Of Wood Smoke And Vehicle Emissions To Ambient Concentrations Of Volatile Organic Compounds And Particulate Matter During The Yakima Wintertime Nitrate Study, Graham Vanderschelden, Benjamin De Foy, Courtney Herring, Susan D. Kaspari, Tim Vanreken, Bertram Jobson
All Faculty Scholarship for the College of the Sciences
A multiple linear regression (MLR) chemical mass balance model was applied to data collected during an air quality field experiment in Yakima, WA, during January 2013 to determine the relative contribution of residential wood combustion (RWC) and vehicle emissions to ambient pollutant levels. Acetonitrile was used as a chemical tracer for wood burning and nitrogen oxides (NOx) as a chemical tracer for mobile sources. RWC was found to be a substantial source of gas phase air toxics in wintertime. The MLR model found RWC primarily responsible for emissions of formaldehyde (73%), acetaldehyde (69%), and black carbon (55%) and mobile sources …
Dispersion Of Ammonia From Concentrated Animal Feeding Operations, Austin D. Wardall
Dispersion Of Ammonia From Concentrated Animal Feeding Operations, Austin D. Wardall
Masters Theses & Specialist Projects
The purpose of this research is to investigate the dispersion of ammonia (NH3) from three Concentrated Animal Feeding Operations (CAFOs) in western Kentucky, as well as to investigate the Weather Research and Forecasting – Chemistry (WRF-Chem) model’s sensitivity response to initial NH3 concentrations under both wet conditions (significant precipitation) and dry conditions (no precipitation). As expected, pollutant concentrations generally were significantly higher near their points of origin and generally declined away from the sources. Contrary to expectations, ammonia tended to rise through the planetary boundary layer (PBL) regardless of atmospheric conditions. Results showed modeled NH3 pollution levels at the surface …
Fine Particulate Air Pollution And Hospital Emergency Room Visits For Respiratory Disease In Urban Areas In Beijing, China, In 2013, Qin Xu, Xia Li, Shuo Wang, Chao Wang, Fangfang Huang, Qi Gao, Lijuan Wu, Lixin Tao, Jin Guo, Wei Wang, Xiuhua Guo
Fine Particulate Air Pollution And Hospital Emergency Room Visits For Respiratory Disease In Urban Areas In Beijing, China, In 2013, Qin Xu, Xia Li, Shuo Wang, Chao Wang, Fangfang Huang, Qi Gao, Lijuan Wu, Lixin Tao, Jin Guo, Wei Wang, Xiuhua Guo
Research outputs 2014 to 2021
Background
Heavy fine particulate matter (PM2.5) air pollution occurs frequently in China. However, epidemiological research on the association between short-term exposure to PM2.5 pollution and respiratory disease morbidity is still limited. This study aimed to explore the association between PM2.5 pollution and hospital emergency room visits (ERV) for total and cause-specific respiratory diseases in urban areas in Beijing. Methods Daily counts of respiratory ERV from Jan 1 to Dec 31, 2013, were obtained from ten general hospitals located in urban areas in Beijing. Concurrently, data on PM2.5 were collected from the Beijing Environmental Protection Bureau, …
Household Bush Burning Practice And Related Respiratory Symptoms In Grenada, The Caribbean, Muge Akpinar-Elci, Kareem Coomansingh, James Blando, Larissa Mark
Household Bush Burning Practice And Related Respiratory Symptoms In Grenada, The Caribbean, Muge Akpinar-Elci, Kareem Coomansingh, James Blando, Larissa Mark
Center for Global Health Publications
The practice of household bush burning in Grenada occurs frequently, though it is not well documented. The effects of the emissions from bush burning on respiratory health of the population have never been researched in Grenada. The goal of the study was to measure the frequency of bush burning and to investigate the relationship between bush burning practice and respiratory health in Grenada. In this cross-sectional study, a questionnaire was used to gather information from households in the parishes of St. George and St. Andrew, Grenada. In total, 225 participants were recruited and their responses on household bush burning and …
Annual Patterns Of Atmospheric Pollutions And Episodes Over Cairo Egypt, Y. Aboel Fetouh, Hesham El-Askary, Mohamed El Raey, Mohamed Allali, W. A. Sprigg, Menas Kafatos
Annual Patterns Of Atmospheric Pollutions And Episodes Over Cairo Egypt, Y. Aboel Fetouh, Hesham El-Askary, Mohamed El Raey, Mohamed Allali, W. A. Sprigg, Menas Kafatos
Mathematics, Physics, and Computer Science Faculty Articles and Research
The Nile Delta major cities, particularly Cairo, experienced stagnant air pollution episodes, known as Black Cloud, every year over the past decade during autumn. Low-elevated thermal inversion layers play a crucial role in intensifying pollution impacts. Carbon monoxide, ozone, atmospheric temperature, water vapor, and methane measurements from the tropospheric emission spectrometer (TES) on board the Aura have been used to assess the dominant component below the inversion layer. In this study, time series analysis, autocorrelations, and cross correlations are performed to gain a better understanding of the connections between those parameters and their local effect. Satellite-based data were obtained for …
Aerosol Climatology Over Nile Delta Based On Modis, Misr And Omi Satellite Data, H. S. Marey, J. C. Gille, Hesham El-Askary, E. A. Shalaby, Mohamed El Raey
Aerosol Climatology Over Nile Delta Based On Modis, Misr And Omi Satellite Data, H. S. Marey, J. C. Gille, Hesham El-Askary, E. A. Shalaby, Mohamed El Raey
Mathematics, Physics, and Computer Science Faculty Articles and Research
Since 1999 Cairo and the Nile delta region have suffered from air pollution episodes called the “black cloud” during the fall season. These have been attributed to either burning of agriculture waste or long-range transport of desert dust. Here we present a detailed analysis of the optical and microphysical aerosol properties, based on satellite data. Monthly mean values of Moderate Resolution Imaging Spectroradiometer (MODIS) aerosol optical depth (AOD) at 550 nm were examined for the 10 yr period from 2000–2009. Significant monthly variability is observed in the AOD with maxima in April or May (_0.5) and October (_0.45), and a …
Slides: Shale And Air Quality: The View From The Other Side, Jeremy Nichols
Slides: Shale And Air Quality: The View From The Other Side, Jeremy Nichols
Shale Plays in the Intermountain West: Legal and Policy Issues (November 12)
Presenter: Jeremy Nichols, Climate & Energy Program Director, WildEarth Guardians, Denver, CO
18 slides
Slides: The Peril Of Energy Usage, Mike Tupper
Slides: The Peril Of Energy Usage, Mike Tupper
The Promise and Peril of Oil Shale Development (February 5)
Presenter: Mike Tupper, Executive Vice President, Composite Technology Development, Inc.
9 slides
Slides: The Logistics And Energy Needs Of Oil Shale Extraction, Alan K. Burnham
Slides: The Logistics And Energy Needs Of Oil Shale Extraction, Alan K. Burnham
The Promise and Peril of Oil Shale Development (February 5)
Presenter: Dr. Alan K. Burnham, Chief Technology Officer, American Shale Oil, LLC
10 slides
Slides: Energy Production And The West's Wild Places, Amy Mall
Slides: Energy Production And The West's Wild Places, Amy Mall
Shifting Baselines and New Meridians: Water, Resources, Landscapes, and the Transformation of the American West (Summer Conference, June 4-6)
Presenter: Amy Mall, Senior Policy Analyst, Natural Resources Defense Council
28 slides
Slides: Paying The Price For Power: When L.A. Turns On The Lights, Northwestern New Mexico Feels It, Jonathan Thompson
Slides: Paying The Price For Power: When L.A. Turns On The Lights, Northwestern New Mexico Feels It, Jonathan Thompson
Shifting Baselines and New Meridians: Water, Resources, Landscapes, and the Transformation of the American West (Summer Conference, June 4-6)
Presenter: Jonathan Thompson, Editor, High Country News
23 slides
The Role Of Case Studies In Natural Resources Law [Summary], John Copeland Nagle
The Role Of Case Studies In Natural Resources Law [Summary], John Copeland Nagle
The Future of Natural Resources Law and Policy (Summer Conference, June 6-8)
4 pages.
"John Nagle, Univ. of Notre Dame Law School" -- Agenda
Historical Evolution And Future Of Natural Resources Law And Policy: The Beginning Of An Argument And Some Modest Predictions, Sally K. Fairfax, Helen Ingram, Leigh Raymond
Historical Evolution And Future Of Natural Resources Law And Policy: The Beginning Of An Argument And Some Modest Predictions, Sally K. Fairfax, Helen Ingram, Leigh Raymond
The Future of Natural Resources Law and Policy (Summer Conference, June 6-8)
8 pages.
Includes bibliographical references
"Sally Fairfax, UC-Berkeley, Helen Ingram, UC-Irvine, and Leigh Raymond, Purdue University" -- Agenda
Indigenous Peoples And Environmental Justice: The Impact Of Climate Change, Rebecca Tsosie
Indigenous Peoples And Environmental Justice: The Impact Of Climate Change, Rebecca Tsosie
The Climate of Environmental Justice: Taking Stock (March 16-17)
Presenter: Rebecca Tsosie, Professor of Law, Arizona State University
1 page.
Day 5. Friday, August 15, 2003: Rocky Mountain National Park, University Of Colorado Boulder. Natural Resources Law Center
Day 5. Friday, August 15, 2003: Rocky Mountain National Park, University Of Colorado Boulder. Natural Resources Law Center
Energy Field Tour 2003 (August 11-16)
1 page.
Contains references.
Day 3. Wednesday, August 13, 2003: Coalbed Methane Development, University Of Colorado Boulder. Natural Resources Law Center
Day 3. Wednesday, August 13, 2003: Coalbed Methane Development, University Of Colorado Boulder. Natural Resources Law Center
Energy Field Tour 2003 (August 11-16)
10 pages (includes color illustrations and maps).
Agenda: Energy Field Tour 2003, University Of Colorado Boulder. Natural Resources Law Center
Agenda: Energy Field Tour 2003, University Of Colorado Boulder. Natural Resources Law Center
Energy Field Tour 2003 (August 11-16)
Congressional staff tour held August 11-16, 2003
Summary: Binder of assorted articles, maps, brochures and other materials prepared for participants of the tour
Contents:
MONDAY, AUGUST 11, 2003: BLUE SPRUCE PEAKER PLANT: University of Colorado Natural Resources Law Center : congressional staff tour of Blue Spruce Energy Center / Peggy Duxbury -- 'Power Struggle', National Journal, June 27, 2003 / Margaret Kritz -- 'Calpine's Blue Spruce Energy Center begins commercial operation', Calpine press release, April 17, 2003 -- NATIONAL RENEWABLE ENERGY LAB: NREL at a glance -- NREL technologies -- SHOSHONE HYDROELECTRIC PLANT: 'River District Board supports spring Shoshone call …
To The U.S. Department Of Transportation: Comments Of The Environmental Defense Fund On The Secretary Of Transportation’S National Transportation Policy, Robert E. Yuhnke
To The U.S. Department Of Transportation: Comments Of The Environmental Defense Fund On The Secretary Of Transportation’S National Transportation Policy, Robert E. Yuhnke
Air Quality Protection in the West (November 27-28)
20 pages.
Agenda: Air Quality Protection In The West, University Of Colorado Boulder. Natural Resources Law Center
Agenda: Air Quality Protection In The West, University Of Colorado Boulder. Natural Resources Law Center
Air Quality Protection in the West (November 27-28)
Conference organizers, session moderators and/or speakers included University of Colorado School of Law professor Mark S. Squillace.
Visibility, acid rain, air toxics, and urban air pollution are the topics of an upcoming Center conference on air quality in the West. The conference will be held at the School of Law in Boulder on November 27-28, 1989. Presentations will describe the nature and scope of the issues, the existing legal framework and experience with its implementation, and proposed changes in the law. Emphasis will be placed on air quality issues in the West and efforts underway to address these problems. Special …
Diminishing Views: Air Quality In Western National Parks, Christine L. Shaver
Diminishing Views: Air Quality In Western National Parks, Christine L. Shaver
Air Quality Protection in the West (November 27-28)
17 pages.
Contains references.
The Application Of Laser Intracavity Absorption Detector To Gas Chromatography Of Trace Organic Pollutants In Water, Robert B. Green
The Application Of Laser Intracavity Absorption Detector To Gas Chromatography Of Trace Organic Pollutants In Water, Robert B. Green
Technical Reports
A helium-neon (HeNe) laser operating simultaneously at 3.39 um (infrared) and 0.63 um (visible) has been used as a selective detector for hydrocarbons in the effluent of a gas chromatograph. The infrared and visible laser transitions originate at the same energy level and are competitive. When a hydrocarbon enters the laser's resonant cavity, the 3.39 um energy is absorbed due to the C-H stretching vibration and the visible emission is enhanced. The visible laser emission is monitored with a photodiode as a quantitative measure of the concentration of the absorbing molecule. The minimum detectable concentration for propane using the double-beam …