variability of liquid water path in marine boundary layer clouds
Download
Skip this Video
Download Presentation
Variability of Liquid Water Path in Marine Boundary Layer Clouds

Loading in 2 Seconds...

play fullscreen
1 / 51

Variability of Liquid Water Path in Marine Boundary Layer Clouds - PowerPoint PPT Presentation


  • 72 Views
  • Uploaded on

Variability of Liquid Water Path in Marine Boundary Layer Clouds. [email protected] Introduction and Motivation Climatology Model Evaluation Variability of Cloud Liquid Water Conclusions and Future Work. [email protected] Schematic of Tropical Circulation.

loader
I am the owner, or an agent authorized to act on behalf of the owner, of the copyrighted work described.
capcha
Download Presentation

PowerPoint Slideshow about 'Variability of Liquid Water Path in Marine Boundary Layer Clouds' - fleur


An Image/Link below is provided (as is) to download presentation

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -
Presentation Transcript
slide2
Introduction and Motivation
  • Climatology
  • Model Evaluation
  • Variability of Cloud Liquid Water
  • Conclusions and Future Work

[email protected]

slide5
Introduction and Motivation
  • Climatology
  • Model Evaluation
  • Variability of Cloud Liquid Water
  • Conclusions and Future Work

[email protected]

slide19
Conclusions Part 1
  • We’ve exploited the availability of a 30-year satellite record to construct a comprehensive climatology of global regions dominated by MBL cloud
  • Discussed the applicability of using Lower Tropospheric Stability as an indirect measure of inversion strength and hence Cloud Fraction.
  • In addition to a dependence on LTS, there is an additional, weaker dependence on the absolute temperature.
  • The seasonal cycle in LTS is governed by the potential temperature at 700hPa in the northern hemisphere, and by SST in the Southern Hemisphere regions.
  • These two factors can to a certain extent explain some of the differences in interregional behaviour.

[email protected]

slide20
Introduction and Motivation
  • Climatology
  • Model Evaluation
  • Variability of Cloud Liquid Water
  • Conclusions and Future Work

[email protected]

slide24
Introduction and Motivation
  • Climatology
  • Model Evaluation
  • Variability of Cloud Liquid Water
  • Conclusions and Future Work

[email protected]

slide27
Scene Average
  • Simultaneous Retrievals – possible biases
  • Assumes Small Particle size
  • Poor spatial resolution relative to visible spectrum

27

[email protected]

slide49
Introduction and Motivation
  • Climatology
  • Model Evaluation
  • Variability of Cloud Liquid Water
  • Conclusions and Future Work

[email protected]

slide50
Conclusions
  • The A-Train instruments provide the opportunity to use independent collocated measurements of LWP.
  • LWP can be strongly influenced by the large scale atmosphere
  • Increased Lower Tropospheric Stability acts to decrease in-cloud LWP
  • This partially offsets increased CRF due to increased fraction of overcast cloud at high stabilities
  • Wind speed and Potential Temperature at 700 hPa are good indicators of cloud properties for overcast cloud
  • Large scale atmospheric factors can also have a significant impact on droplet effective radius, possibly through cloud lifetime effects
  • Further work is needed to establish mechanisms fort he observed results.

[email protected]

slide51
Future Work
  • Extend our analysis to different regions
  • Extend time span of current study
  • Investigate seasonal cycle of LWP in terms of large scale variables
  • Extend e.g. LWP-LTS results to different cloud fractions, develop technique to deal with systematic bias.
  • Apply similar method to evaluation of model representation of liquid water.

[email protected]

ad