Christman Field Latest Observations
Date Time
MST
Temp
°F
RH
%
DewPt
°F
Wind
mph
Dir
°
Gust
mph
Dir
°
Press
in Hg
Solar
W/m^2
Prec
in
2019-09-16 14:30 89.2 12.1 30.1 5.1 150 8.7 149 24.728 725.2 0.00
2019-09-16 14:25 89.9 12.0 30.6 6.2 146 9.2 139 24.748 772.6 0.00
2019-09-16 14:20 89.8 12.1 30.6 7.0 122 11.3 134 24.740 770.1 0.00
2019-09-16 14:15 89.8 12.8 32.1 5.5 72 9.3 121 24.763 802.0 0.00
2019-09-16 14:10 90.7 12.3 31.7 7.0 109 11.9 118 24.757 857.0 0.00
2019-09-16 14:05 91.5 11.6 31.0 6.0 121 17.9 179 24.745 887.0 0.00
2019-09-16 14:00 89.5 11.8 29.8 2.4 176 6.1 230 24.738 905.0 0.00
2019-09-16 13:55 88.4 11.8 29.1 6.1 244 8.2 220 24.723 839.0 0.00
2019-09-16 13:50 87.9 12.5 30.1 6.8 264 10.4 233 24.750 679.2 0.00
2019-09-16 13:45 88.4 12.5 30.4 4.6 302 6.7 213 24.752 834.0 0.00
2019-09-16 13:40 88.1 12.5 30.1 4.7 241 8.3 191 24.760 847.0 0.00
2019-09-16 13:35 88.9 12.6 30.9 6.1 135 10.6 141 24.764 883.0 0.00
2019-09-16 13:30 88.8 12.6 30.9 5.5 235 9.6 202 24.766 906.0 0.00
2019-09-16 13:25 89.1 12.1 30.2 4.8 135 7.5 151 24.766 907.0 0.00
2019-09-16 13:20 87.3 12.7 29.9 3.4 151 8.1 136 24.767 790.1 0.00
2019-09-16 13:15 86.4 13.1 30.0 4.5 141 7.0 137 24.768 453.6 0.00
2019-09-16 13:10 85.9 14.2 31.5 3.4 144 7.7 116 24.769 385.8 0.00
2019-09-16 13:05 85.9 12.9 29.2 3.5 78 7.7 93 24.770 329.3 0.00
2019-09-16 13:00 86.2 13.4 30.5 5.3 93 8.7 125 24.771 325.0 0.00
2019-09-16 12:55 87.3 13.2 30.9 5.6 115 8.3 81 24.771 386.8 0.00
2019-09-16 12:50 88.0 12.9 30.8 4.9 82 7.3 82 24.773 818.0 0.00
2019-09-16 12:45 87.2 13.2 30.7 6.1 138 9.1 154 24.774 832.0 0.00
2019-09-16 12:40 86.2 13.6 30.8 6.2 92 10.0 142 24.775 556.3 0.00
2019-09-16 12:35 85.4 13.6 30.1 6.8 124 10.8 126 24.774 452.3 0.00
2019-09-16 12:30 85.4 14.5 31.7 7.3 141 12.1 133 24.773 431.1 0.00
2019-09-16 12:25 85.6 14.2 31.3 8.1 152 11.0 149 24.771 415.6 0.00
2019-09-16 12:20 85.7 13.1 29.3 5.8 119 9.6 127 24.771 494.2 0.00
2019-09-16 12:15 86.6 12.7 29.3 5.6 156 9.8 127 24.775 456.1 0.00
2019-09-16 12:10 87.6 12.9 30.6 7.2 131 10.6 130 24.776 888.0 0.00
2019-09-16 12:05 87.1 13.4 31.1 6.5 151 10.7 164 24.776 875.0 0.00
CIRA

Cooperative Institute for Research in the Atmosphere

Malm, William

Dr. William Malm

CIRA Fellow

Job Title:
Senior Research Scientist, CIRA, Colorado State University
Phone Number:

970-491-8292

Fax Number:

970-491-8241

Mailing Addresss:
Bill Malm

Cooperative Institute for Research in the Atmosphere

Colorado State University

1375 Campus Delivery

Fort Collins, CO 80523-1375
Office Location:
CIRA Room 101
About Me:

Dr. William C Malm is a research scientist/scholar at Colorado State University’s Cooperative Institute for Research in the Atmosphere (CIRA) and a recently retired research physicist in the National Park Service Air Resources Division where he was program coordinator for the visibility/particulate research and monitoring program.  He received his B.S. degree in physics and a minor in mathematics from Mankato State University in 1965 and his M.S. and Ph.D. degrees in physics from the University of North Dakota (1968) and the University of Missouri (1972), respectively.  He has previously worked as an Environmental Protection Agency (EPA) research scientist and as a professor of environmental science at Northern Arizona University in Flagstaff.  He is a member of the Air & Waste Management Association (AWMA), the American Geophysical Union (AGU), and the American Association for Aerosol Research (AAAR).  He has served as an organizing chair for special sessions in each of these associations and as a guest editor for the Journal of Geophysical Research (JGR) and the Journal of the Air & Waste Management Association (JAWMA).  He is also a topic editor for environmental monitoring for the Encyclopedia of Earth.  He has received a number of awards for outstanding lectures and various research activities.  In 2009 he received the George Wright Society 2008 Director’s Award for Natural Resources, the EPA Thomas W. Zosel 2008 Outstanding Individual Achievement Award, and the Air & Waste Management Association’s Frank A. Chambers Excellence in Air Pollution Control Award for his research contributions in the areas of visibility and air quality.  He serves as a science advisor to the EPA as a member of the Clean Air Scientific Advisory Committee.

 

Dr. Malm’s expertise is in the general area of visibility and related topics.  He made some of the first visibility and air quality measurements in the National Park Service system at the Grand Canyon in 1972.  Since then he has designed and built instrumentation to measure the effects of atmospheric aerosols on the scenic qualities of landscape features, as well as their optical and chemical properties.  He has formulated radiation transfer algorithms that allow pictorial visualization of aerosol scattering and absorption effects on scenic landscape features.  He pioneered studies of visibility perception that elicit human responses, in terms of both psychophysical and value assessment, to changes in scenic quality as a function of aerosol optical properties.  He has initiated and carried out large field campaigns to better characterize aerosol physical and optical properties, especially as they relate to aerosol hygroscopic properties, and to assess the relative contributions of various source types to visibility impacts in a number of national parks and wilderness areas.  He has also pioneered a number of back-trajectory receptor modeling methodologies that allow estimates of the relative contributions of source areas to aerosol concentrations or visibility effects at selected receptor sites.  Many of the results from this work have been incorporated into the Interagency Monitoring of Protected Visual Environments (IMPROVE) program and the EPA Regional Haze Rule (RHR).

    Publications

    Use of Cameras for Monitoring Visibility Impairment

    Published Date: 2018
    Published By: Atmospheric Environment

    Origin of Fine Particulate Carbon in the Rural United States

    Published Date: 2017
    Published By: Environmental Science & Technology

    The Recent History of the Composition of Fine Particulate Matter in the Rural United States

    Published Date: 2018
    Published By: Conference

    Do Sulfur Dioxide Emissions from Ships Impact Sulfate Concentrations at IMPROVE Coastal Sites?

    Published Date: 2018
    Published By: Conference

    What Visibility Metrics Best Represent Individuals’ Judgments of Visual Air Quality?

    Published Date: 2018
    Published By: Conference

    The Recent History of the Composition of Fine Particulate Matter in the Rural United States

    Published Date: 2017
    Published By: Conference

    Tracking Progress to Natural Visibility on Anthropogenically Impaired Days

    Published Date: 2017
    Published By: Conference