Timothy B Parkin

Summary

Affiliation: Agricultural Research Service
Country: USA

Publications

  1. ncbi request reprint Nitrous oxide emissions from corn-soybean systems in the midwest
    Timothy B Parkin
    USDA ARS, National Soil Tilth Laboratory, Ames, IA 50011, USA
    J Environ Qual 35:1496-506. 2006
  2. doi request reprint Effect of sampling frequency on estimates of cumulative nitrous oxide emissions
    Timothy B Parkin
    USDA ARS, National Soil Tilth Lab, 2110 University Blvd, Ames, IA 50011, USA
    J Environ Qual 37:1390-5. 2008
  3. doi request reprint Calculating the detection limits of chamber-based soil greenhouse gas flux measurements
    T B Parkin
    USDA ARS, National Lab for Agriculture and the Environment, Ames, IA 50011, USA
    J Environ Qual 41:705-15. 2012
  4. doi request reprint Methane flux in cropland and adjacent riparian buffers with different vegetation covers
    Dong Gill Kim
    Dep of Natural Resource Ecology and Management, Iowa State Univ, Ames, IA 50011 3221, USA
    J Environ Qual 39:97-105. 2010
  5. doi request reprint Evaluation of photoacoustic infrared spectroscopy for simultaneous measurement of N2 O and CO2 gas concentrations and fluxes at the soil surface
    Javed Iqbal
    Department of Agronomy, Iowa State University, Ames, IA 50011, USA
    Glob Chang Biol 19:327-36. 2013
  6. doi request reprint Greenhouse gas emissions from two soils receiving nitrogen fertilizer and swine manure slurry
    Marek K Jarecki
    AgCert USA, National Soil Tilth Lab, 2110 University Ave, Ames, IA 50011, USA
    J Environ Qual 37:1432-8. 2008
  7. doi request reprint Denitrification in wood chip bioreactors at different water flows
    Colin M Greenan
    USDA ARS, National Soil Tilth Lab, 2110 University Blvd, Ames, IA 50011, USA
    J Environ Qual 38:1664-71. 2009

Collaborators

Detail Information

Publications7

  1. ncbi request reprint Nitrous oxide emissions from corn-soybean systems in the midwest
    Timothy B Parkin
    USDA ARS, National Soil Tilth Laboratory, Ames, IA 50011, USA
    J Environ Qual 35:1496-506. 2006
    ..Comparison of our results with estimates calculated using the Intergovernmental Panel on Climate Change default emission factor of 0.0125 indicate that the estimated fluxes underestimate measured emissions by a factor of 3 at our sites...
  2. doi request reprint Effect of sampling frequency on estimates of cumulative nitrous oxide emissions
    Timothy B Parkin
    USDA ARS, National Soil Tilth Lab, 2110 University Blvd, Ames, IA 50011, USA
    J Environ Qual 37:1390-5. 2008
    ..The variance of potential fluxes associated with the between-band positions was less than the over-band position, indicating that the underlying temporal variability impacts the efficacy of a given sampling protocol...
  3. doi request reprint Calculating the detection limits of chamber-based soil greenhouse gas flux measurements
    T B Parkin
    USDA ARS, National Lab for Agriculture and the Environment, Ames, IA 50011, USA
    J Environ Qual 41:705-15. 2012
    ..Equations were developed that enable the calculation of flux detection limits of any gas species if analytical precision, chamber deployment time, and ambient concentration of the gas species are known...
  4. doi request reprint Methane flux in cropland and adjacent riparian buffers with different vegetation covers
    Dong Gill Kim
    Dep of Natural Resource Ecology and Management, Iowa State Univ, Ames, IA 50011 3221, USA
    J Environ Qual 39:97-105. 2010
    ..Results suggest that CH(4) flux was not changed after establishment of perennial vegetation on cropped soils, despite significant changes in soil properties...
  5. doi request reprint Evaluation of photoacoustic infrared spectroscopy for simultaneous measurement of N2 O and CO2 gas concentrations and fluxes at the soil surface
    Javed Iqbal
    Department of Agronomy, Iowa State University, Ames, IA 50011, USA
    Glob Chang Biol 19:327-36. 2013
    ..5-3.0 ppm N2 O). On average, N2 O fluxes measured with the six PAS were 4.7% higher than one GC and 9.9% lower than the second GC...
  6. doi request reprint Greenhouse gas emissions from two soils receiving nitrogen fertilizer and swine manure slurry
    Marek K Jarecki
    AgCert USA, National Soil Tilth Lab, 2110 University Ave, Ames, IA 50011, USA
    J Environ Qual 37:1432-8. 2008
    ..In addition the higher average %WFPS in the sandy loam may have favored higher denitrification and CH(4) production than in the clay soil...
  7. doi request reprint Denitrification in wood chip bioreactors at different water flows
    Colin M Greenan
    USDA ARS, National Soil Tilth Lab, 2110 University Blvd, Ames, IA 50011, USA
    J Environ Qual 38:1664-71. 2009
    ....