Nitrogen Dioxide

Nitrogen Peroxide, NO₂

Nitrogen dioxide (NO₂), a brownish highly reactive gas, is one of the six major regulated criteria pollutant gas that can cause acute respiratory illness. Though it is found at all levels in the atmosphere, it is dense near the surface and comes mainly from vehicle exhaust and fuel combustion sources. In the troposphere it photodissociates to give free oxygen atoms, which can produce ground level ozone (smog). It also produces corrosive Nitric Acid. In the sratosphere it takes part in the catalytic ozone reduction cycle.

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Click on the corresponding 'Data access' links in the table below to access products containing specific parameter.

Parameter	Units	Platform /Instrument	Data Products
			Begin Date	End Date	Data Access	Doc
NO2 total and tropospheric verticle column and slant column densities at ground pixel resolution	molecules/cm2	Aura/OMI	2004-08-15	Current	OMNO2	Y
NO2 mixing ratios at different pressure levels (ground pixel resolution)	vmr	Aura/HIRDLS	2004-07-15	Current	HIRDLS2	Y
		UARS/HALOE	1991-10-11	2005-11-21	UARHA2FN	Y
NO2 mixing ratios at different pressure levels, globally Gridded	vmr	UARS/HALOE	1991-10-11	2005-11-21	UARHA3AT	Y
		UARS/CLAES	1991-10-25	1993-05-05	UARCL3AT	Y
					UARCL3AL	Y
		UARS/ISAMS	1991-09-26	1992-07-29	UARIS3AT	Y
					UARIS3AL	Y
		Nimbus-7/LIMS	1978-10-25	1985-05-01	LIMSN7L2	Y
NO2 total and tropospheric verticle column and slant column densities at ground pixel resolution, global 0.25 deg lat/lon grids	molecules/cm2	Aura/OMI	2004-08-15	Current	OMNO2G	Y