1. • height of the tropopause: 11 kilometres (36,000 feet) above mean sea level

2. Third, air outflows and loses heat via infrared radiation to space at the temperature of the cold tropopause.

3. The second type originates because of dynamic events in the atmosphere and is thus called adynamic tropopause.

4. But the measurements show that these differences are small, for example only a few Kelvin at the tropopause.

5. Monsoon Circulations may transport air directly from the troposphere into the tropical stratosphere, bypassing the tropical cold point tropopause

6. Though the absolute amounts of the emissions are small compared to other anthropogenic global emissions (2-3% for CO2 and NOX), these emissions occur in the critical altitude region below and above the tropopause, between 9 km and 14 km altitude, and are concentrated mainly in the latitude regions between 40°N and 60°N.