Marina Molodovskaya

Email: mm433@cornell.edu

I am a PhD candidate in Biological and Environmental Engineering at Cornell University expecting to defense by fall 2009. I started my graduate work at Cornell in 2003; currently, I am a graduate research assistant in the Soil and Water Group under the supervision of Prof. Tammo Steenhuis (tss1@cornell.edu). Our project title is Emission of nitrous oxide and ammonia from New York State dairy farms: measurement, modeling and extension and the project goal is to estimate the levels of atmospheric emission of gaseous nitrogen from dairy farm facilities and manure-fertilized fields by conducting long-term, field-scale, continuous N2O and NH3 flux monitoring.

Current Research Interests

My particular research interests in this project are (a) how N2O flux is affected by different fertilization and crop practices; (b) the annual high-resolution temporal patterns of N2O flux and the effect of environmental factors on N2O formation throughout the year; and (c) spatial distribution of the flux footprint. For the last study, I conducted periodic static chamber flux measurements simultaneously with micrometeorological monitoring.

I would like to continue studying environmental aspects of chemistry and biogeochemistry with regard to land-atmosphere interactions, including how humans alter global nutrient cycles and what consequences these changes might have for the global climate and environment. My particular research interest is the reactive nitrogen species and gases considered to be ozone destructors and greenhouse gas precursors (NOx and NHx), their biogenic and technogenic sources, and mechanisms of their chemical transformation and transport in the environment. I am especially interested in further developing and using modern analytical methods and tools for the measurement of reactive nitrogen species.

Publications

Molodovskaya, M., J.Warland, B.K. Richards, T.S. Steenhuis. The analysis of spatial distribution of agricultural N₂O: comparative study of static chamber and eddy covariance measurements. (in preparation)

Molodovskaya, M., O. Singurindy, B.K. Richards, J.Warland, T.S. Steenhuis. High resolution nitrous oxide fluxes from agricultural soils: the effect of temperature and soil moisture. (in preparation)

Molodovskaya, M., O. Singurindy, B.K. Richards, J.Warland, T.S. Steenhuis. Continuous long-term monitoring of nitrous oxide from fertilized alfalfa and corn cropland in the New York State. (in preparation)

Singurindy, O., M. S. Molodovskaya, B. K. Richards, and T. S. Steenhuis. 2008. Nitrous oxide emission from manure-amended soils at low temperatures (accepted with revisions) Agriculture, Ecosystems and Environment. MS No. AGEE4043.

Molodovskaya, M., O. Singurindy, B.K. Richards, T.S. Steenhuis. 2008. Nitrous Oxide from Aerated Dairy Manure Slurries: Effects of Aeration Rates and Oxic/Anoxic Phasing. Bioresource Technology 99 : 8643–8648

Singurindy, O., M. Molodovskaya, B. K. Richards, and T. S. Steenhuis. 2008. Gaseous nitrogen emission from soil aggregates as affected by clay mineralogy and repeated urine applications. Water, Air, & Soil Pollution 195:285–299