Nitrogen cycle nitrous oxide

Delwiche, C. C. (1981). The nitrogen cycle and nitrous oxide. In "Denitrification, Nitrification, and Atmospheric Nitrous Oxide" (C. C. Delwiche, ed.). Wiley, New York. 

In denitrification, part of the biological nitrogen cycle, nitrate in the soil is converted via four enzymatic reactions stepwise to nitrite, nitric oxide and nitrous oxide to finally yield gaseous nitrogen. 

Kroeze, C., and Seitzinger, S.P. (1998) Nitrogen inputs to rivers, estuaries and continental shelves and related nitrous oxide emissions in 1990 and 2050 a global model. Nutrient Cycl. Agroecosyst. 52 195-212. 

You mentioned the reaction between oxygen and nitrous oxide. Most environmental chemists pay attention to NO and NO2 as well as their interconversion, but little attention is paid to N2O. Does N2O have a part in the nitrogen cycle We are very curious about the fact that it is present uniformly in the troposphere at about 0.25 ppm. Is the reaction of oxygen and of direct relevance to the atmosphere ... 

Fig. 1.2), most of which escapes to the atmosphere (see Fig. 1.1 as well as Chapter 2 by Bange, this volume). Nitrous oxide acts as a greenhouse gas that is more than 200 times more potent than CO2 (Ramaswamy et ah, 2001). Therefore variations of this gas in the atmosphere can lead to changes in Earth s temperature and cHmate. Since the oceanic emission of N2O constitutes a substantial fraction to the total emission of N2O into the atmosphere, N2O provides for a direct potential link between the ocean nitrogen cycle and Earth s climate. 

Nitric oxide (NO), nitrous oxide (N2O), dinitrogen (N2), and ammonia (NH3) are constituents of the Earth s atmosphere. They play important roles in the chemistry and climate of the present-day Earth. Moreover, they are intermediates of the oceanic nitrogen cycle. In contrast to most of the other components of the oceanic nitrogen cycle, they exist as dissolved gaseous molecules. Being gases they can be transferred across the seasurface-troposphere interface. 

Naik, H. (2003). Benthic Nitrogen Cycling with Special Reference to Nitrous Oxide in the Coastal and Continental Shelf Environments of the Eastern Arabian Sea, Ph.D. thesis, Goa University (unpublished). 

Capone, D. G. (1991). Aspects of the marine nitrogen cycle with relevance to the dynamics of nitrous and nitric oxide. In Microbial Production and Consumption of Greenhouse Gases Methane, Nitrogen Oxides, and Halomethanes (Rogers, J. E., and Whitman, W. B., eds.). American Society of Microbiology, Washington, DC. pp. 255—275. 

Figure 12 A diagram of the nitrogen cycle with catalyzing enzymes and metal requirements of each step. NIT, nitrogenase AMO, ammonium mono-oxygenase HAO, hydroxylamine oxidoreductase NAR, membrane-bound respiratory nitrate reductase NAP, periplasmic respiratory nitrate reductase NR, assimila-tory nitrate reductase NIR, respiratory nitrite reductase NiR, assimilatory nitrite reductase NOR, nitric oxide reductase N2OR, nitrous oxide reductase.

Capone D. G. (1991) Aspects of the marine nitrogen cycle with relevance to the dynamics of nitrous and nitric oxide. 

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