Improved Estimates for Nitrogen and Oxygen IsotopeBudget Balance of Tropospheric N2O
关于对流层大气N2O氮、氧稳定同位素负荷平衡的初步探讨

In steady state,the nitrogen and oxygen isotope budgets from the global N2O sources which are uniformly depleted in heavy isotopes and isotopically lighter than the tropospheric N2O are balanced respectively to the returned N2O from stratosphere enriched in the heavy isotopesKim and Craig(1993) failed to make their estimated results balanceThis paper improves Kim and Graigs estimation method based upon global N2O sources and their emissions updatedWhen considering isotopic fractionation effects during N2O producing in soils and the latitude effect for nitrogen and oxygen isotopic ratios of N2O,the results can make nitrogen and oxygen isotopes budget of tropospheric N2O approximately balanceFurthermore,this paper puts forward future studies which can validate above results