Gregory A Wetherbee
Gregory Wetherbee is a Research Chemist for the USGS Water Resources Mission Area.
Science and Products
Filter Total Items: 41
U.S. Geological Survey external quality-assurance project report for the National Atmospheric Deposition Program / National Trends Network and Mercury Deposition Network, 2011-2012
The U.S. Geological Survey operated six distinct programs to provide external quality-assurance monitoring for the National Atmospheric Deposition Program (NADP) / National Trends Network (NTN) and Mercury Deposition Network (MDN) during 2011–2012. The field-audit program assessed the effects of onsite exposure, sample handling, and shipping on the chemistry of NTN samples; a system-blank program
Authors
Gregory A. Wetherbee, RoseAnn Martin
Instrumental neutron activation analysis data for cloud-water particulate samples, Mount Bamboo, Taiwan
Cloud water was sampled on Mount Bamboo in northern Taiwan during March 22-24, 2002. Cloud-water samples were filtered using 0.45-micron filters to remove particulate material from the water samples. Filtered particulates were analyzed by instrumental neutron activation analysis (INAA) at the U.S. Geological Survey National Reactor Facility in Denver, Colorado, in February 2012. INAA elemental com
Authors
Neng-Huei Lin, Guey-Rong Sheu, Gregory A. Wetherbee, Timothy M. Debey
Effects of equipment performance on data quality from the National Atmospheric Deposition Program/National Trends Network and the Mercury Deposition Network
The U.S. Geological Survey Branch of Quality Systems operates the Precipitation Chemistry Quality Assurance project (PCQA) to provide independent, external quality-assurance for the National Atmospheric Deposition Program (NADP). NADP is composed of five monitoring networks that measure the chemical composition of precipitation and ambient air. PCQA and the NADP Program Office completed five short
Authors
Gregory A. Wetherbee, Mark F. Rhodes
2010 Monitoring and Tracking Wet Nitrogen Deposition at Rocky Mountain National Park
No abstract available.
Authors
Kristi H. Morris, M. Alisa Mast, David W. Clow, Gregory A. Wetherbee, Jill S. Baron, Curt Taipale, David Gay, Eric Richer
Fission products in National Atmospheric Deposition Program—Wet deposition samples prior to and following the Fukushima Dai-Ichi Nuclear Power Plant incident, March 8?April 5, 2011
Radioactive isotopes I-131, Cs-134, or Cs-137, products of uranium fission, were measured at approximately 20 percent of 167 sampled National Atmospheric Deposition Program monitoring sites in North America (primarily in the contiguous United States and Alaska) after the Fukushima Dai-Ichi Nuclear Power Plant incident on March 12, 2011. Samples from the National Atmospheric Deposition Program were
Authors
Gregory A. Wetherbee, Timothy M. Debey, Mark A. Nilles, Christopher M.B. Lehmann, David A. Gay
Wet deposition of fission-product isotopes to North America from the Fukushima Dai-ichi incident, March 2011
Using the infrastructure of the National Atmospheric Deposition Program (NADP), numerous measurements of radionuclide wet deposition over North America were made for 167 NADP sites before and after the Fukushima Dai-ichi Nuclear Power Station incident of March 12, 2011. For the period from March 8 through April 5, 2011, wet-only precipitation samples were collected by NADP and analyzed for fission
Authors
Gregory A. Wetherbee, David A. Gay, Timothy M. Debey, Christopher M.B. Lehmann, Mark A. Nilles
Four studies on effects of environmental factors on the quality of National Atmospheric Deposition Program measurements
Selected aspects of National Atmospheric Deposition Program / National Trends Network (NADP/NTN) protocols are evaluated in four studies. Meteorological conditions have minor impacts on the error in NADP/NTN sampling. Efficiency of frozen precipitation sample collection is lower than for liquid precipitation samples. Variability of NTN measurements is higher for relatively low-intensity deposition
Authors
Gregory A. Wetherbee, Natalie E. Latysh, Christopher M.B. Lehmann, Mark F. Rhodes
U.S. Geological Survey external quality-assurance project report to the National Atmospheric Deposition Program / National Trends Network and Mercury Deposition Network, 2007-08
The U.S. Geological Survey (USGS) used six distinct
programs to provide external quality-assurance monitoring for the National Atmospheric Deposition Program /
National Trends Network (NTN) and Mercury Deposition
Network (MDN) during 2007-08. The field-audit program
assessed the effects of onsite exposure, sample handling,
and shipping on the chemistry of NTN samples, and a
system-blank prog
Authors
Gregory A. Wetherbee, Natalie E. Latysh, Tanya A. Chesney
Comparison of precipitation chemistry measurements obtained by the Canadian Air and Precipitation Monitoring Network and National Atmospheric Deposition Program for the period 1995-2004
Precipitation chemistry and depth measurements obtained by the Canadian Air and Precipitation Monitoring Network (CAPMoN) and the US National Atmospheric Deposition Program/National Trends Network (NADP/NTN) were compared for the 10-year period 1995–2004. Colocated sets of CAPMoN and NADP instrumentation, consisting of precipitation collectors and rain gages, were operated simultaneously per stand
Authors
Gregory A. Wetherbee, Michael J. Shaw, Natalie E. Latysh, Christopher M.B. Lehmann, Jane E. Rothert
Mercury Deposition Network Site Operator Training for the System Blank and Blind Audit Programs
The U.S. Geological Survey operates the external quality assurance project for the National Atmospheric Deposition Program/Mercury Deposition Network. The project includes the system blank and blind audit programs for assessment of total mercury concentration data quality for wet-deposition samples. This presentation was prepared to train new site operators and to refresh experienced site operator
Authors
Gregory A. Wetherbee, Christopher M.B. Lehmann
External Quality Assurance Programs Managed by the U.S. Geological Survey in Support of the National Atmospheric Deposition Program/Mercury Deposition Network
The U.S. Geological Survey (USGS) Branch of Quality Systems operates external quality assurance programs for the National Atmospheric Deposition Program/Mercury Deposition Network (NADP/MDN). Beginning in 2004, three programs have been implemented: the system blank program, the interlaboratory comparison program, and the blind audit program. Each program was designed to measure error contributed b
Authors
Natalie E. Latysh, Gregory A. Wetherbee
The Field Audit Site Operator Training
No abstract available.
Authors
Gregory A. Wetherbee, Shannon M. Greene, John A. Gehrke
Science and Products
Filter Total Items: 41
U.S. Geological Survey external quality-assurance project report for the National Atmospheric Deposition Program / National Trends Network and Mercury Deposition Network, 2011-2012
The U.S. Geological Survey operated six distinct programs to provide external quality-assurance monitoring for the National Atmospheric Deposition Program (NADP) / National Trends Network (NTN) and Mercury Deposition Network (MDN) during 2011–2012. The field-audit program assessed the effects of onsite exposure, sample handling, and shipping on the chemistry of NTN samples; a system-blank program
Authors
Gregory A. Wetherbee, RoseAnn Martin
Instrumental neutron activation analysis data for cloud-water particulate samples, Mount Bamboo, Taiwan
Cloud water was sampled on Mount Bamboo in northern Taiwan during March 22-24, 2002. Cloud-water samples were filtered using 0.45-micron filters to remove particulate material from the water samples. Filtered particulates were analyzed by instrumental neutron activation analysis (INAA) at the U.S. Geological Survey National Reactor Facility in Denver, Colorado, in February 2012. INAA elemental com
Authors
Neng-Huei Lin, Guey-Rong Sheu, Gregory A. Wetherbee, Timothy M. Debey
Effects of equipment performance on data quality from the National Atmospheric Deposition Program/National Trends Network and the Mercury Deposition Network
The U.S. Geological Survey Branch of Quality Systems operates the Precipitation Chemistry Quality Assurance project (PCQA) to provide independent, external quality-assurance for the National Atmospheric Deposition Program (NADP). NADP is composed of five monitoring networks that measure the chemical composition of precipitation and ambient air. PCQA and the NADP Program Office completed five short
Authors
Gregory A. Wetherbee, Mark F. Rhodes
2010 Monitoring and Tracking Wet Nitrogen Deposition at Rocky Mountain National Park
No abstract available.
Authors
Kristi H. Morris, M. Alisa Mast, David W. Clow, Gregory A. Wetherbee, Jill S. Baron, Curt Taipale, David Gay, Eric Richer
Fission products in National Atmospheric Deposition Program—Wet deposition samples prior to and following the Fukushima Dai-Ichi Nuclear Power Plant incident, March 8?April 5, 2011
Radioactive isotopes I-131, Cs-134, or Cs-137, products of uranium fission, were measured at approximately 20 percent of 167 sampled National Atmospheric Deposition Program monitoring sites in North America (primarily in the contiguous United States and Alaska) after the Fukushima Dai-Ichi Nuclear Power Plant incident on March 12, 2011. Samples from the National Atmospheric Deposition Program were
Authors
Gregory A. Wetherbee, Timothy M. Debey, Mark A. Nilles, Christopher M.B. Lehmann, David A. Gay
Wet deposition of fission-product isotopes to North America from the Fukushima Dai-ichi incident, March 2011
Using the infrastructure of the National Atmospheric Deposition Program (NADP), numerous measurements of radionuclide wet deposition over North America were made for 167 NADP sites before and after the Fukushima Dai-ichi Nuclear Power Station incident of March 12, 2011. For the period from March 8 through April 5, 2011, wet-only precipitation samples were collected by NADP and analyzed for fission
Authors
Gregory A. Wetherbee, David A. Gay, Timothy M. Debey, Christopher M.B. Lehmann, Mark A. Nilles
Four studies on effects of environmental factors on the quality of National Atmospheric Deposition Program measurements
Selected aspects of National Atmospheric Deposition Program / National Trends Network (NADP/NTN) protocols are evaluated in four studies. Meteorological conditions have minor impacts on the error in NADP/NTN sampling. Efficiency of frozen precipitation sample collection is lower than for liquid precipitation samples. Variability of NTN measurements is higher for relatively low-intensity deposition
Authors
Gregory A. Wetherbee, Natalie E. Latysh, Christopher M.B. Lehmann, Mark F. Rhodes
U.S. Geological Survey external quality-assurance project report to the National Atmospheric Deposition Program / National Trends Network and Mercury Deposition Network, 2007-08
The U.S. Geological Survey (USGS) used six distinct
programs to provide external quality-assurance monitoring for the National Atmospheric Deposition Program /
National Trends Network (NTN) and Mercury Deposition
Network (MDN) during 2007-08. The field-audit program
assessed the effects of onsite exposure, sample handling,
and shipping on the chemistry of NTN samples, and a
system-blank prog
Authors
Gregory A. Wetherbee, Natalie E. Latysh, Tanya A. Chesney
Comparison of precipitation chemistry measurements obtained by the Canadian Air and Precipitation Monitoring Network and National Atmospheric Deposition Program for the period 1995-2004
Precipitation chemistry and depth measurements obtained by the Canadian Air and Precipitation Monitoring Network (CAPMoN) and the US National Atmospheric Deposition Program/National Trends Network (NADP/NTN) were compared for the 10-year period 1995–2004. Colocated sets of CAPMoN and NADP instrumentation, consisting of precipitation collectors and rain gages, were operated simultaneously per stand
Authors
Gregory A. Wetherbee, Michael J. Shaw, Natalie E. Latysh, Christopher M.B. Lehmann, Jane E. Rothert
Mercury Deposition Network Site Operator Training for the System Blank and Blind Audit Programs
The U.S. Geological Survey operates the external quality assurance project for the National Atmospheric Deposition Program/Mercury Deposition Network. The project includes the system blank and blind audit programs for assessment of total mercury concentration data quality for wet-deposition samples. This presentation was prepared to train new site operators and to refresh experienced site operator
Authors
Gregory A. Wetherbee, Christopher M.B. Lehmann
External Quality Assurance Programs Managed by the U.S. Geological Survey in Support of the National Atmospheric Deposition Program/Mercury Deposition Network
The U.S. Geological Survey (USGS) Branch of Quality Systems operates external quality assurance programs for the National Atmospheric Deposition Program/Mercury Deposition Network (NADP/MDN). Beginning in 2004, three programs have been implemented: the system blank program, the interlaboratory comparison program, and the blind audit program. Each program was designed to measure error contributed b
Authors
Natalie E. Latysh, Gregory A. Wetherbee
The Field Audit Site Operator Training
No abstract available.
Authors
Gregory A. Wetherbee, Shannon M. Greene, John A. Gehrke