This article provides an overview of current spectroscopic needs for measurements of atmospheric pollution from Earth satellites. This is now a sizable field of research, with some dozen satellites now performing measurements or being planned or prepared for launch. Measurements of tropospheric chemical constituents, their sources, sinks, transport, and transformation, provide crucial information on tropospheric oxidation chemistry and pollution of the lower atmosphere, and are now being employed to improve global emission inventories of odd nitrogen (NOx) and volatile organic compounds (VOCs).
Pollution measurements include: formaldehyde (HCHO), the m ajor proxy for VOCs; glyoxal (CHOCHO) a recent additional proxy for VOC emissions; NO2, the major proxy for NOx; tropospheric ozone (O3); carbon monoxide (CO); sulfur dioxide (SO2), from volcanoes and from anthropogenic pollution; and enhanced BrO over the polar ice shelves in spring. The needs for improved laboratory Spectroscopic measurements for the various pollutants will be presented.
- Electric measurements
- Atmospheric constituent sources
- Atmospheric constituent transport
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