Loading...
Please wait, while we are loading the content...
Similar Documents
Dynamic-chemical coupling of the upper troposphere and lower stratosphere region
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Shindell, Drew T. Reithmeier, Christian Grewe, Volker |
| Copyright Year | 2000 |
| Description | The importance of the interaction of chemistry and dynamics in the upper troposphere and lower stratosphere for chemical species like ozone is investigated using two chemistry-climate models. Species emitted in the upper troposphere, like NOx (=NO+NO2) by lightning or aircraft, have the chance to be transported into the lowermost stratosphere. Trajectory calculations suggest that the main transport pathway runs via the Inter Tropical Convergence Zone, across the tropical tropopause and then to higher latitudes, i.e. into the lowermost stratosphere. Longer lifetimes of NOx in the lower stratosphere yield an accumulation of NO. there, which feeds back on upper troposphere chemistry. This effect has been estimated for lightning NO. emissions and reveals a contribution of at least 25% to 40% to the total northern hemisphere mid-latitude lightning increase of either NOx and ozone. |
| File Size | 533389 |
| File Format | |
| Language | English |
| Publisher Date | 2000-01-01 |
| Access Restriction | Open |
| Subject Keyword | Geophysics Emittance Atmospheric Chemistry Lightning Troposphere Stratosphere Nitrogen Oxides Ozone Climate Models Coupling Lagrangian Function Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Article |
