Preliminary results with the

LaMP X band radar

J. Van Baelen¹, Y. Pointin¹, F. Tridon¹, and M. Hagen²

1°/ Laboratoire de Météorologie Physique, Observatoire de Physique du Globe de Clermont-Ferrand,

2°/ Institut für Physik der Atmosphäre, DLR – Oberpfaffenhofen.

Ι / LaMP contribution to COPS

LaMP contributions to COPS

Super site Vosges (mountain): Scanning X band precipitation radar

X band radar characteristics

Site: Bischenberg 48°28’45” N / 7°28’29” E

Operations: 15 Jun. – 29 Aug.

Resolutions: Range 60 m. Azimuth 2° Time 30 sec.

Data base: All POI PNGs are available on

ftpobs.univ-bpclermont.fr/exterieur/JVB

Reprocessing under way Z & Rs available later

LaMP contributions to COPS

Super site Vosges (mountain): Scanning X band precipitation radar

Super site Vosges (valley): Micro Rain Radar K band profiler Raingage and J-W disdrometer

MRR characteristics Site: Niedernai

48°26’53” N 7°31’33” E

Operations: 14 Jun. – 30 Aug.

Resolutions: Vertical 100m. Max range 3000m. Time 20 sec.

Data base: All MRR measurements are on Data Base

(format similar to all other COPS MRRs) Raingage data in preparation (example format ?)

LaMP contributions to COPS

Super site Vosges (mountain): Scanning X band precipitation radar

Super site Vosges (valley): Micro Rain Radar K band profiler Rain gage and J-W disdrometer

GPS network / IWV and tomography

Cloud microphysics model

ΙΙ / Observations

Real Time Data / Animation of last 2 h on line

Entzheim

Mutsig

Grendelbruche

Mt Sainte Odile

Champ du Feu

Trees

V

The X-Rad Horror show !

Impact on measurements

ΙΙΙ / Preliminary results

New X-band radar visualization

Impact on measurements

Monthly Cumulated Rains

IOP14 V-site rain event

Reflectivity comparisons and Rain Rate Estimates

IOP 15

Contrasted behavior when comparing 12 and 13 of August Cell generation:

12: Crests 13: Foothills

Evolution: 12: Stationnary at first then slow drift before

disappearing on plains 13: Reinforcement together with motion to

the East

POLDIRAD: Cell Tracking IOP 15

12 Aug. 2007 11-17 UTC 13 Aug. 2007 8-15 UTC cell tracks

first occurrence X RadX Rad

August 12 (12:00 – 15:00 UTC)

August 13 (12:30 – 13:30 UTC)

ΙV / What’s next ?

Future work & Objectives

Combined studies with MRR in order to retrieve adapted Z-R relationships and improve rain rate estimations

Comparisons with other radars (POLDIRAD + DOW) and instruments

Link radar observations with humidity field structure and evolution (GPS tomography and airborne measurements)

Detailed study of precipitation events within their meteorological context

Comparison with LaMP microphysical simulations

That’s all for now !

Questions ?

Primary IOPs of interest

Criterions Precipitations seen by X band radar Measurements with POLDIRAD & DOW Airborne measurements

Selection IOP 7 IOP 14 IOP 15 IOP 12 IOP 10 Others: IOP 5 – 6, days 21/6 - 16/8, ATR

flights

Tomography (coarse) primer !

12 Aug. 11:00