Research Support Office Research Advancement Division. Tokyo University of Agriculture and Technology
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Home > Tenured Faculties > Nakashima Yoshihiro
Nakashima Yoshihiro
Affiliation | Institute of Agriculture |
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Division | Division of Environmental Science on Biosphere |
Research field | Field of Environmental Chemistry |
Keyword(S) | atmospheric chemistry in nighttime, nitrogen oxides, molecular spectroscopy |
Url | https://web.tuat.ac.jp/~enrs/Nakashima_Example.html |
Research experience | ・Apr. 2005-Mar. 2007: Postdoctral fellow, National Institute for Environmental Studies (NIES) |
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Educational background | ・1999: Graduated Faculty of Science, Kyushu University |
Awards | |
Selected papers and publications | * The latest information is shown at the member's website. |
Nitrogen oxides (NOx) are one of the important species in troposphere and it acts as a precursor of the formation of photochemical oxidant. The increment of the concentration of oxidant is one of the important issues. To reduce the concentration of oxidant, it is essential to know the emission and loss amounts of NOx precisely and mechanism of the chemical reaction related with NOx. There are many reports for the output of NOx, while the loss amount of NOx has been unknown, especially loss process of NOx in nighttime. The main loss process in nighttime is (1) reaction of NO3 with volatile organic compounds (VOCs) and (2) heterogeneous reaction of N2O5 with aerosol. Loss amount of NOx by these reactions depend on the property of VOCs, diameter and component of aerosol, seasonal and geophysical conditions.
My research is the measurements of NO3 and N2O5 related with the loss process of NOx, and some trace species such as ozone, NO, NO2, VOCs and aerosol in nighttime. These measurements provide me the information about the loss amount of NOx during nighttime. I am trying to the measurements for each season and some places to know the dependence of the loss amount of NOx on the seasonal and geophysical conditions.
The Tenure Track Program in TUAT provides me a good research environment because it provides me a sufficient fund, independent laboratory, good advice from senior researcher, and reduction of the load of education and committee work.
The increment of the concentration of photochemical oxidant is one of the important issues. In addition developing countries has faced with the same issues. Photochemical oxidant acts not only on the atmospheric pollutant gas but also on the greenhouse gas. Viewed in this light, it has been thought that reduction of pollutant species contributes to the restriction of the greenhouse effect. I have believed that my research contributes to the solution of many atmospheric issues in some day.