A5015481162- Impact of Light on Environment and Health
- Air Quality and Health Impacts
- Climate Change and Health Impacts
- Air Quality Monitoring and Forecasting
- Satellite Communication Systems
- Vehicle emissions and performance
- Astronomy and Astrophysical Research
- CCD and CMOS Imaging Sensors
- Optical Wireless Communication Technologies
- Stellar, planetary, and galactic studies
- International Maritime Law Issues
- Environmental law and policy
- Hydrology and Watershed Management Studies
- Energy, Environment, and Transportation Policies
- Photocathodes and Microchannel Plates
- Astronomical Observations and Instrumentation
- Global Health Care Issues
- Arctic and Russian Policy Studies
- Atmospheric chemistry and aerosols
- Groundwater and Isotope Geochemistry
- Space Satellite Systems and Control
- Soil and Water Nutrient Dynamics
- Coastal and Marine Management
- Climate Change and Geoengineering
- COVID-19 impact on air quality
NSF’s NOIRLab
2023
Community Science and Data Center
2023
Universidad de Santiago de Chile
1999-2009
University of Tennessee at Knoxville
2001-2002
Abstract Temuco is one of the most highly wood-smoke-polluted cities in world. Its population 2004 was 340,000 inhabitants with 1587 annual deaths, which 24% were due to cardiovascular and 11% respiratory causes. For hospital admissions, diseases represented 6% 13%. Emergency room visits for acute infections 28%. The objective study presented here determine relationship between air pollution from particulate matter less than or equal 10 µm aerodynamic diameter (PM10; mostly PM2.5, <2.5...
ABSTRACT Light pollution at astronomical observatories is one of the main factors to be taken into account preserve their scientific productivity and useful lifetime. Using Garstang–Cinzano model applied Visible Infrared Imaging Radiometer Suite (VIIRS) 2021 satellite radiance data, we have compared 28 sites, all hosting telescopes with apertures larger than 3 m, plus some additional selected sites. We computed analysed five indicators light pollution: zenith; averaged 60° zenith distance;...
Abstract Light pollution is recognized as a global issue that, like other forms of anthropogenic pollution, has significant impact on ecosystems and adverse effects living organisms. Plentiful evidence suggests that it been increasing at an unprecedented rate all spatial scales. Chile—which, thanks to its unique environmental conditions, become one the most prominent astronomical hubs world—seems be no exception. In this paper we present results first observing campaign aimed quantifying...
We present optical (UBVRI) sky brightness measurements from 1992 through 2006. The data are based on CCD imagery obtained with the CTIO 0.9, 1.3, and 1.5 m telescopes. B‐ V‐band in reasonable agreement previously made at Mauna Kea, although basis of a small number images per year, there discrepancies for years 1994. Our CCD‐based not significantly different than values Cerro Paranal. find that yearly averages best correlated 10.7 cm solar flux taken 5 days prior to measurements. This implies...
A computer model called the Ozone Risk Assessment Model (ORAM) was developed to evaluate health effects caused by ground-level ozone (O3) exposure. ORAM coupled with U.S. Environmental Protection Agency's (EPA) Third-Generation Community Multiscale Air Quality (Models-3/CMAQ), state-of-the-art air quality that predicts O3 concentration and allows examination of various scenarios in which emission rates precursors (basically, oxides nitrogen [NOx] volatile organic compounds) are varied. The...
The growing number of satellite constellations in low Earth orbit (LEO) enhances global communications and observation, support space commerce is a high priority many governments. At the same time, proliferation satellites LEO has negative effects on astronomical observations research, preservation dark quiet sky. These reflect sunlight onto optical telescopes, their radio emission impacts observatories, jeopardising our access to essential scientific discoveries through astronomy. changing...
The MOBILE6 emissions model, currently under development, uses mileage accumulation rates that assume the average 25-year-old car has been driven more than 337 962 km (210,000 mi), and pickup truck 402 336 (250,000 mi). Cumulative is used in model to calculate emission factors increase with due air pollution control device “deterioration.” Odometer readings taken previous studies by Environmental Protection Agency additional data indicate accumulations may be much less [i.e., 201 168...
Abstract Large constellations of bright artificial satellites in low Earth orbit pose significant challenges to ground-based astronomy [1]. Currently orbiting constellation have visual brightnesses between apparent magnitudes 4 and 6, satellite operators, astronomers, other users the night sky are working on brightness mitigation strategies [2,3]. Here we report outcome an international optical observation campaign a prototype satellite, AST Space Mobile’s “BlueWalker 3”. BlueWalker 3...
Light pollution is recognized as a global issue that, like other forms of anthropogenic pollution, has significant impact on ecosystems and adverse effects living organisms. Multiple evidence suggests that it been increasing at an unprecedented rate all spatial scales. Chile, which thanks to its unique environmental conditions become one the most prominent astronomical hubs world, seems be no exception. In this paper we present results first observing campaign aimed quantifying artificial...