Exhaust from jet engines contains water vapor and particles that can act as ice nuclei. What effect would you expect jet traffic to have on the cloud cover at altitudes of 10-13 kilometers?
a. Increase in cloud cover due to the presence of water vapor and ice nuclei emitted from jet engines.
b. Decrease in cloud cover as the particles from jet engines could disperse clouds at higher altitudes.
c. No change in cloud cover as the impact of jet traffic on cloud formation is minimal.
d. Increase in cloud cover initially, but a potential decrease over time as the particles emitted from jet engines could contribute to cloud evaporation.