Institut für Physik der Atmosphäre

Life Cycle of Deep Convection during the COPS Field Campaign (LIFCOC)

Martin Hagen, Hartmut Höller, George Craig

Institut für Physik der Atmosphäre, DLR Oberpfaffenhofen

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Institut für Physik der AtmosphäreSPP 1167 Begutachtung, 10. Jan. 08, Bad Honnef

LIFCOC is a proposal within the “COPS bundle”only project in PPLPOLDIRAD only instrument to measure4-d microphysics

Its goal is:

“to study the complete life cycle of deep convection in mountainous terrain from initiation to decay”

It aims to answer the hypotheses and science questions of COPS and in particular the ones of the working group PPL:

Location and timing of CI depends on the humidity (and wind) fieldLife cycle of single cells is affected by orography, but not the one of larger systemsPPL 1: what is role of orography for the development of cells ?PPL 2: does the orography affect the hydrometeor distribution ?PPL 3: how does the RDSD change during the life cycle ?

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Institut für Physik der AtmosphäreSPP 1167 Begutachtung, 10. Jan. 08, Bad Honnef

Using radarlidar lightning measurements numerical simulations

to describe the life cycle of precipitation the variation of rain drop size distribution the development of lightning

in relation to orography

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Institut für Physik der AtmosphäreSPP 1167 Begutachtung, 10. Jan. 08, Bad Honnef

Isolated cell over Black Forest (IOP 8b, 15 July 2007)

Reflectivity (dBZ)

radar groundclutter

Hornisgrinde

graupelgraupel

small hail

rain

hail + rain

Hydrometeorclassification

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Institut für Physik der AtmosphäreSPP 1167 Begutachtung, 10. Jan. 08, Bad Honnef

Work plan of LIFCOC

New Project, funding requested for 2 years, 3rd year internal funding

WP 1 Case selection 1.1: Evaluation of POLDIRAD data

1.2: Evaluation of airborne lidar data

1.3: Evaluation of additional measurements and background information from numerical simulations

WP 2 Description of the life cycle

2.1: Initiation and interaction with orography

2.2: Mature state and interaction with orography

2.3: Decay and interaction with orography

2.4: Evaluation of numerical simulations

WP 3 Retrieval of RDSD from polarimetric radar measurements

3.1: Implementation of the algorithm

3.2: Validation with MRR measurements

3.3: Investigation of the RDSD in relation to life cycle and orography

3.4: Comparison of RDSD to simulations with spectral microphysics or 2-moment scheme

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Institut für Physik der AtmosphäreSPP 1167 Begutachtung, 10. Jan. 08, Bad Honnef

Cooperation within COPS bundle

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Institut für Physik der AtmosphäreSPP 1167 Begutachtung, 10. Jan. 08, Bad Honnef

Other national (+SPP PQP) and international cooperation

Universität Hamburg (MRR measurements), G. Peters

SPP1167 QUEST (COSMO-DE simulations and improvement of model microphysics)

SPP1167 DAQUA (COSMO-DE simulation and assimilation)

Université de Clermont-Ferrand (X-band radar Bischenberg), J. van Baelen

Observatoire Midi-Pyrénées (MesoNH simulations), E. Richard

NCAR (DOW), T. Weckwerth