Dr. Richard H. Grant Profile

Dr. Richard H. Grant

Professor at Purdue Univ

SPIE Involvement:

Author

Proceedings Article | 13 September 2005 Paper

Short-term impacts of elevated UV-B radiation on soybeans

Kent Apostol, Richard Grant, Cheryl Bawhey, Wei Gao

Proceedings Volume 5886, 58860I (2005) https://doi.org/10.1117/12.613320

KEYWORDS: Ultraviolet radiation, Reflectivity, Lamps, Absorbance, Solids, Ozone, Proteins, Photosynthesis, Tolerancing, Nondestructive evaluation

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Proceedings Article | 18 August 2005 Paper

The measurement and modeling of broadband UV-A irradiance

Richard Grant, James Slusser

Proceedings Volume 5886, 58860C (2005) https://doi.org/10.1117/12.613318

KEYWORDS: Sensors, Atmospheric modeling, Calibration, Error analysis, Head, Aerosols, Solar radiation models, Ultraviolet radiation, Clouds, Humidity

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Proceedings Article | 14 October 2004 Paper

Effect of enhanced UV-B radiation combined with other climate stressors on winter wheat

Wei Gao, Youfei Zheng, James Slusser, Richard Grant

Proceedings Volume 5545, (2004) https://doi.org/10.1117/12.563465

KEYWORDS: Climatology, Lamps, Ultraviolet radiation, Head, Photosynthesis, Climate change, Soil science, Visible radiation, Ozone, Carbon monoxide

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Proceedings Article | 14 October 2004 Paper

Response of different crop growth and yield to enhanced UV-B radiation under field conditions

Youfei Zheng, Wei Gao, James Slusser, Richard Grant, Chuanhai Wang

Proceedings Volume 5545, (2004) https://doi.org/10.1117/12.563454

KEYWORDS: Ozone, Lamps, Radiation effects, Agriculture, Ultraviolet radiation, Information science, Information technology, Ecology, Carbon monoxide, Pollution control

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Proceedings Article | 14 October 2004 Paper

Impact of cloud cover on erythemal UV-B exposure under vegetation canopies

Richard Grant, Gordon Heisler, Wei Gao

Proceedings Volume 5545, (2004) https://doi.org/10.1117/12.562501

KEYWORDS: Clouds, 3D modeling, Ultraviolet radiation, Vegetation, Atmospheric modeling, Ozone, Solar radiation models, Spherical lenses, Skin cancer, Buildings

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Proceedings Article | 4 November 2003 Paper

Inclusion of an ultraviolet radiation transfer component in an urban forest effects model for predicting tree influences on potential below-canopy exposure to UVB radiation

Gordon Heisler, Richard Grant, David Nowak, Wei Gao, Daniel Crane, Jeffrey Walton

Proceedings Volume 5156, (2003) https://doi.org/10.1117/12.509193

KEYWORDS: Ultraviolet radiation, 3D modeling, Buildings, Solar radiation models, Data modeling, Climatology, Vegetation, Meteorology, Geographic information systems, Cancer

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Evaluating the impact of ultraviolet-B radiation (UVB) on urban populations would be enhanced by improved predictions of the UVB radiation at the level of human activity. This paper reports the status of plans for incorporating a UVB prediction module into an existing Urban Forest Effects (UFORE) model. UFORE currently has modules to quantify urban forest structure, urban tree volatile organic compound emissions, carbon storage and sequestration in urban vegetation, dry deposition of air pollutants on trees, tree influences on energy use for heating and cooling buildings, tree pollen allergenicity index, and replacement cost of trees. These modeled effects are based upon field sampling to characterize land use, vegetation cover, and building features. The field sampling includes recording of tree species, total height, height to base of live crown, and crown width on randomly selected 0.04-ha (0.1 acre) plots. Distance and direction from sampled trees to buildings are also measured. The input for UFORE modeling of effects includes hourly meteorological data and pollution-concentration data. UFORE has already been used in assessing the urban forest functionof 13 cities in the United States and 5 cities in other countries. The objective of the present work is to enable UFORE to predict the effect of different urban tree densities on potential average human exposure to UVB. The current version of UFORE is written using the Statistical Analysis System (SAS); a new version will be a user-friendly Windows application and will be available for wide distribution. Progress to date on the UVB module consists primarily of examining available modeling and data collection tools. Two methods are proposed for the UVB module. In Method 1, we will derive predicted UVB irradiance <I_b> at person height, that is, below the urban tree and building canopy, using gap fractions (sky view portions) measured from digitized fisheye photos taken from each of the UFORE plot centers during a UFORE field survey. A promising method for analyzing the photos is the use of Gap Light Analyzer (GLA). A human thermal comfort model will be used to determine the times when people would be comfortable outdoors in light attire, and UVB <I_b> will be determined for those times. Method 2 will be applied in cases where hemispherical photos cannot be made available, and for making predictions for cities where surveys have already been done. Method 2 will use a 3D canopy UV radiation transfer model to derive <I_b> based on tree canopy cover maps from GIS analysis of aerial color IR photographs or Landsat TM images. The UV module addition to UFORE will make it useful in epidemiology of UV-related human disease and assessment of UV benefits, such as in vitamin D production, and it will also facilitate consideration of UV exposure in urban forest management.

Proceedings Article | 4 November 2003 Paper

Defining the probabilities of solar UV event exposures for plant effects research

Richard Grant, James Slusser

Proceedings Volume 5156, (2003) https://doi.org/10.1117/12.504866

KEYWORDS: Ultraviolet radiation, Ozone, Clouds, Error analysis, Solar radiation, Sensors, Calibration, Statistical analysis, Solids, Climatology

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Proceedings Article | 4 November 2003 Paper

Effect of epicuticular wax on UV scattering of sorghum leaves and canopies

Cheryl Bawhey, Richard Grant

Proceedings Volume 5156, (2003) https://doi.org/10.1117/12.504903

KEYWORDS: Reflectivity, Scattering, Transmittance, Ultraviolet radiation, Magnesium, Data modeling, Radiometry, Calibration, Sensors, Atmospheric modeling

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Proceedings Article | 1 July 2003 Paper

Solar ultraviolet-B radiation in urban environments: Baltimore, Maryland

Gordon Heisler, Richard Grant, Wei Gao, James Slusser, Corinne Ehrlich

Proceedings Volume 4896, (2003) https://doi.org/10.1117/12.466229

KEYWORDS: Ozone, Calibration, Solar radiation, Ecosystems, Ultraviolet radiation, Aerosols, Sensors, Agriculture, Pollution, Environmental monitoring

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Proceedings Article | 1 July 2003 Paper

Growth analytic simulation of soybean and winter wheat crops under different doses of UV-B irradiance

Youfei Zheng, Wei Gao, James Slusser, Yuhong He, Richard Grant

Proceedings Volume 4896, (2003) https://doi.org/10.1117/12.466190

KEYWORDS: Data modeling, Lamps, Ozone, Meteorology, Statistical modeling, Radiotherapy, Analytical research, Ecology, Earth's atmosphere, Agriculture

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Proceedings Article | 1 July 2003 Paper

Spatial correlations of daily and weekly maximum day exposure of solar UV radiation in the continental United States

Richard Grant, James Slusser

Proceedings Volume 4896, (2003) https://doi.org/10.1117/12.466118

KEYWORDS: Ultraviolet radiation, Ozone, Clouds, Radiation effects, Climatology, Solar radiation, Radiometry, Aerosols, Translucency, Satellites

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Proceedings Article | 17 January 2002 Paper

Estimating the UV diffuse fraction of solar radiation under partly cloudy skies

Richard Grant, Wei Gao

Proceedings Volume 4482, (2002) https://doi.org/10.1117/12.452914

KEYWORDS: Clouds, Sun, Atmospheric modeling, Ultraviolet radiation, Scattering, Solar radiation models, Humidity, Ozone, Radiometry, Aerosols

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Proceedings Article | 17 January 2002 Paper

Modeling ultraviolet-B radiation in a maize canopy

Wei Gao, Richard Grant, Gordon Heisler, James Slusser

Proceedings Volume 4482, (2002) https://doi.org/10.1117/12.452943

KEYWORDS: 3D modeling, Transmittance, Solar radiation models, Sensors, Sun, Ozone, Solar radiation, Ultraviolet radiation, Scattering, Photography

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Proceedings Article | 17 January 2002 Paper

Yield and yield formation of winter wheat in response to enhanced solar ultraviolet-B radiation

Youfei Zheng, Wei Gao, James Slusser, Richard Grant, Chuanhai Wang

Proceedings Volume 4482, (2002) https://doi.org/10.1117/12.452936

KEYWORDS: Lamps, Ear, Solar radiation, Ultraviolet radiation, Photosynthesis, Ozone, Agriculture, Environmental monitoring, Meteorology, Ecosystems

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Proceedings Article | 17 January 2002 Paper

Urban tree influences on ultraviolet irradiance

Gordon Heisler, Richard Grant, Wei Gao

Proceedings Volume 4482, (2002) https://doi.org/10.1117/12.452929

KEYWORDS: Sensors, Ultraviolet radiation, Sun, 3D modeling, Buildings, Reflectivity, Visible radiation, Ozone, Atmospheric modeling, Environmental sensing

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Showing 5 of 15 publications

Conference Committee Involvement (4)

Ultraviolet Ground- and Space-based Measurements, Models, and Effects V

31 July 2005 | San Diego, California, United States

Ultraviolet Ground- and Space-based Measurements, Models, and Effects IV

5 August 2004 | Denver, Colorado, United States

Ultraviolet Ground- and Space-based Measurements, Models, and Effects III

4 August 2003 | San Diego, California, United States

Ultraviolet Ground- and Space-based Measurements, Models, and Effects II

25 October 2002 | Hangzhou, China

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