paul lawson and brad baker (spec) eric jensen (nasa arc), david mitchell (dri)
DESCRIPTION
Microphysical and Radiative Properties of Tropical Clouds R esults from TC4 and NAMMA. Paul Lawson and Brad Baker (SPEC) Eric Jensen (NASA ARC), David Mitchell (Dri). Anvil and Turrets on 7/24. Aged Anvil Cirrus on 8/8. In Situ Cirrus on 7/22. - PowerPoint PPT PresentationTRANSCRIPT
![Page 1: Paul Lawson and Brad Baker (SPEC) Eric Jensen (NASA ARC), David Mitchell (Dri)](https://reader031.vdocuments.mx/reader031/viewer/2022020111/56813e5a550346895da85619/html5/thumbnails/1.jpg)
Paul Lawson and Brad Baker (SPEC) Eric Jensen (NASA ARC), David Mitchell (Dri)
Microphysical and Radiative Microphysical and Radiative Properties of Tropical Clouds Properties of Tropical Clouds RResults esults
from TC4 and NAMMAfrom TC4 and NAMMA
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Anvil and Turrets on 7/24 Aged Anvil Cirrus on 8/8
In Situ Cirrus on 7/22
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Decrease in Number Concentration, Extinction and Mass
Across a TC4 Anvil from DC-8 In Situ Data at FL370 on 24 July 2008
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Jensen et al. (2009)
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TWP-ICE
~ 100 km Downwind ~ 300 km Downwind
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Examples of Crystal Chains Formed in Continental Anvils
With High Electric Fields (Connolly et al. 2005 - QJRMS)
![Page 13: Paul Lawson and Brad Baker (SPEC) Eric Jensen (NASA ARC), David Mitchell (Dri)](https://reader031.vdocuments.mx/reader031/viewer/2022020111/56813e5a550346895da85619/html5/thumbnails/13.jpg)
Comparison of Cloud Radiative Heating ProfilesComparison of Cloud Radiative Heating Profiles
Mitchell MADA Code used to Compute Optical Properties (SSA, g(SSA, g, , ext) from 2D-S Area and Mass PSD’s
Optical Properties fed into Toon et al. (1989) Two-Stream Radiative Transfer Code to Compute Heating Rates.
![Page 14: Paul Lawson and Brad Baker (SPEC) Eric Jensen (NASA ARC), David Mitchell (Dri)](https://reader031.vdocuments.mx/reader031/viewer/2022020111/56813e5a550346895da85619/html5/thumbnails/14.jpg)
Comparison of Cloud Radiative Heating ProfilesComparison of Cloud Radiative Heating Profiles
![Page 15: Paul Lawson and Brad Baker (SPEC) Eric Jensen (NASA ARC), David Mitchell (Dri)](https://reader031.vdocuments.mx/reader031/viewer/2022020111/56813e5a550346895da85619/html5/thumbnails/15.jpg)
Comparison of Cloud Radiative Heating ProfilesComparison of Cloud Radiative Heating Profiles
![Page 16: Paul Lawson and Brad Baker (SPEC) Eric Jensen (NASA ARC), David Mitchell (Dri)](https://reader031.vdocuments.mx/reader031/viewer/2022020111/56813e5a550346895da85619/html5/thumbnails/16.jpg)
Comparison of Cloud Radiative Heating ProfilesComparison of Cloud Radiative Heating Profiles
![Page 17: Paul Lawson and Brad Baker (SPEC) Eric Jensen (NASA ARC), David Mitchell (Dri)](https://reader031.vdocuments.mx/reader031/viewer/2022020111/56813e5a550346895da85619/html5/thumbnails/17.jpg)
Comparison of Cloud Radiative Heating ProfilesComparison of Cloud Radiative Heating Profiles
![Page 18: Paul Lawson and Brad Baker (SPEC) Eric Jensen (NASA ARC), David Mitchell (Dri)](https://reader031.vdocuments.mx/reader031/viewer/2022020111/56813e5a550346895da85619/html5/thumbnails/18.jpg)
Comparison of Cloud Radiative Heating ProfilesComparison of Cloud Radiative Heating Profiles
![Page 19: Paul Lawson and Brad Baker (SPEC) Eric Jensen (NASA ARC), David Mitchell (Dri)](https://reader031.vdocuments.mx/reader031/viewer/2022020111/56813e5a550346895da85619/html5/thumbnails/19.jpg)
CVI and 2D-S IWC Agree to Within About 20% in the mean. Average Microphysical Properties are Similar from one
Tropical Maritime Region (TC4) to Another (NAMMA) Significant Microphysical Variability (i.e., Particle
Concentration, ext, IWC, Particle Shape) Exists Within a Region on scales from Tens to Thousands of Kilometers, however, Particles from about 100 to 400 m Dominate Extinction and IWC in all Cloud Types.
Two-Stream Radiative Transfer Model (Toon 1989) gives Cloud Heating Rates using Actual In Situ Measurements.
SummarySummaryConc.
cc-1
extKm-1
IWC g m-3
0.1 0.5 0.01 0.5
0.1 1 0.03 2
0.5 15 0.5 25
5 50 1.5 500
In Situ Cirrus: Aged Anvil Cirrus: Fresh Anvil Cirrus: Convective Turrets: