Clouds and PrecipitationSelected topics and how HALO can helpSelected topics, and how HALO can help.
– Some Appetizers –
M W di h U i L i iM. Wendisch, Uni Leipzig
F Ament (Uni Hamburg) U Corsmeier (KIT)F. Ament (Uni Hamburg), U. Corsmeier (KIT), S. Crewell (Uni Köln), M. Kaufmann (FZJ),A Petzold (DLR) U Schumann (DLR)A. Petzold (DLR), U. Schumann (DLR)
DFG Priority Programme 1294, HALOEvaluation Colloquium, Oberpfaffenhofen, 11–12 March 2010
Cirrus, Deep & Shallow Convective Clouds
F ti f E B d t &Life Cycle
Formation ofPrecipitation
Energy Budget & Remote Sensing
Mi f I di t Eff t‐ Microstructure ofConvective Clouds
‐ Cirrus and Warm C B lt
‐ Vertical Distribution of Hydrometeors
‐ Mesoscale Heavy
‐ Indirect Effects
‐ MicrophysicalProperties
Conveyer Belts Rain Forecast ‐ Subvisible Cirrus
Selected Topics
Source: http://www.youtube.com/
Questions: - How do vertical profiles of microphysical p yproperties evolve?
- Is the aerosol particlebackground important?
Life Cycle – Microstructure of Convective Clouds (ACRIDICON, NEPTUN, NARVAL)
background important?
WCB Warm Conveyer BeltsHP High Pressure System
Question:How do microphysical and radiative properties of WCBradiative properties of WCB and HP cirrus depend on formation conditions:
Updraft velocity- Updraft velocity, - Humidity, and - Inflowing aerosol?
Life Cycle – Cirrus and Warm Conveyer Belts (ML‐CIRRUS, CIRRUS‐RS)
Cirrus, Deep & Shallow Convective Clouds
F ti f E B d t &Life Cycle
Formation ofPrecipitation
Energy Budget & Remote Sensing
I di t Eff t‐ Microstructure ofConvective Clouds
‐ Cirrus and Warm
‐ Shallow ConvectiveCloud Systems
‐ Mediterranean
‐ Indirect Effects
‐ MicrophysicalProperties
Conveyer Belts Cyclogenesis ‐ Subvisible Cirrus
Selected Topics
Question: To what extent are shallow cloud systems (fair-weather, trade wind area, or post-frontal of extra-tropical cyclones) precipitating?
HALO Microwave Package (HAMP) = Microwave Radiometer + Cloud Radar
Formation of Precipitation – Shallow Convective Cloud Systems (NARVAL)
Question: Can we improve the prediction of rainfall caused by pre-frontal rain bands and convective cells triggered by e.g. orography?
Formation of Precipitation – Mediterranean Cyclogenesis (NEPTUN)
Cirrus, Deep & Shallow Convective Clouds
Lif C lFormation of Energy Budget &
Life Cycle Precipitationgy g
Remote Sensing
‐ Microstructure of ‐ Shallow Convective ‐ AnthropogenicMicrostructure ofConvective Clouds
‐ Cirrus and Warm Conveyer Belts
Shallow ConvectiveCloud Systems
‐ MediterraneanCyclogenisis
Effects
‐ Microphysical Proper‐ties & RadiationConveyer Belts Cyclogenisis
‐ Sub‐Visible Cirrus
Selected Topics
Question: Can a measurable diurnal cycle of aviation-induced cloudiness near the North Atlantic Flight Corridor (NAFC) be verified?
NAFC
G d
Shanon
Gander
Energy Budget & Remote Sensing – Anthropogenic Effects (ML‐CIRRUS)
Question: Is there any threshold optical thickness above which the ice crystal shape looses significance in determining the
radiative forcing of cirrus clouds?radiative forcing of cirrus clouds?
Liou et al. [2000]
Energy Budget & Remote Sensing – Microphysical Properties & Radiation (ML‐CIRRUS, CIRRUS‐RS)
Cirrus, Deep & Shallow Convective Clouds
Formation of Energy Budget &Life Cycle
Formation ofPrecipitation
Energy Budget & Remote Sensing
ACRIDICONACRIDICON
CIRRUS‐RS
ML‐CIRRUS
ACRIDICON
NARVAL
ACRI ICON
CIRRUS‐RS
ML‐CIRRUSNARVAL
NEPTUN
NEPTUNML CIRRUS
NARVAL
How HALO can help – Planned missions
Cirrus, Deep & Shallow Convective Clouds
Formation of Energy Budget &Life Cycle
Formation ofPrecipitation
Energy Budget & Remote Sensing
1, 2, 5, 16, 29, 30, 33, 34, 37, 39 42 52
1, 2, 25, 29, 33, 34, 42,
52
1, 2, 4, 5, 16, 28, 29, 36, 42,
44 5339, 42, 52 52 44, 53
How HALO can help – Proposals submitted
Th k f tt tiThanks for your attention.
ACRIDICON Aerosol, Cloud, Precipitation, and Radiation Interactions and Dynamics of Convective Cloud Systems
CIRRUS-RS Cirrus – Remote Sensing ML-CIRRUS Mid-Latitude Cirrus: Formation, Lifetime, Properties and
R di ti I t f Mid L tit d Ci Cl dRadiative Impact of Mid-Latitude Cirrus CloudsNARVAL Next-generation Aircraft Remote-Sensing for Validation
Studies NEPTUN Deep convection and cyclones causing High ImpactNEPTUN Deep convection and cyclones causing High Impact
Weather (HIW) in the Mediterranean
Acronyms