Uptake of COS by growing vegetation: A major tropospheric sink
Abstract
Laboratory measurements of the uptake of COS by soybeans, corn, wheat, and alfalfa under conditions of controlled illumination, temperature, and CO2 concentration, and at COS concentrations spanning those typically found in the troposphere (∼500 parts per trillion by volume), indicate that the major uptake pathway is through open stomata. Similarities between the uptake resistances observed for COS and CO2 provide a means of estimating global COS uptake from estimates of global terrestrial primary plant productivity. With an estimated annual plant uptake of 0.2-0.6 Tg COS (Tg = 1012 g), this appears to be the largest global sink for this major tropospheric sulfur reservoir species. With this vegetative sink included, estimated known sources and sinks appear to be in approximate balance.
- Publication:
-
Journal of Geophysical Research
- Pub Date:
- November 1988
- DOI:
- 10.1029/JD093iD11p14186
- Bibcode:
- 1988JGR....9314186G
- Keywords:
-
- Carbonyl Compounds;
- Farm Crops;
- Sulfides;
- Troposphere;
- Vegetation Growth;
- Alfalfa;
- Carbon Dioxide;
- Corn;
- Leaves;
- Wheat;
- Atmospheric Composition and Structure: Troposphere-composition and chemistry