i
Observational constraints on the efficiency of dehydration mechanisms in the tropical tropopause layer
-
2016
Source: Geophysical Research Letters, 43(6), 2912-2918.
Details:
-
Journal Title:Geophysical Research Letters
-
Personal Author:
-
NOAA Program & Office:
-
Description:The efficiency of dehydration in the tropical tropopause layer (TTL) determines how closely water vapor will be reduced to the lowest saturation mixing ratio encountered along a trajectory to the stratosphere, thereby strongly influencing stratospheric humidity. The NASA Airborne Tropical Tropopause Experiment (ATTREX) provided an unprecedented number and quality of in situ observations to constrain the key mechanisms controlling this dehydration. Statistical analyses of the ATTREX data show that nucleation, growth, and sedimentation each result in TTL dehydration becoming increasingly inefficient at temperatures below 200K. Because of these inefficiencies, models that ignore these mechanisms likely underestimate water vapor at the stratospheric entry point by 10-20% at the lowest temperatures.
-
Source:Geophysical Research Letters, 43(6), 2912-2918.
-
Document Type:
-
Rights Information:Other
-
Compliance:Submitted
-
Main Document Checksum:
-
File Type:
Supporting Files
-
No Additional Files
More +