jan. 30th, 2008astromet-uveso-chile astrometeorology at the university of valparaíso...

Jan. 30th, 2008Jan. 30th, 2008 Astromet-UVAstromet-UV ESO-ChileESO-Chile

AstroMeteorology at the University of Valparaíso

AstroMeteorology GroupOmar Cuevas - Arlette Chacón

Michel Curé

Department of Physics and AstronomyUniversidad de Valparaíso

History

Department of Physics and Meteorology

Learning MM5 system model CONICYT - DAAD project: Stay at Munich Institute of Meteorology

History

First MM5 simulationForParanal

West-East Vertical Cross section

Velocity field

History

First MM5 simulationForParanal

North - South Vertical Cross section

Velocity field

MIM (Munich Institute of Meteorology ): MM5 - Paranal

MM5 Domains

TKETurbulent KineticEnergy

Present at Lower altitude levels

MIM: MM5 - Paranal

Trajectories

MIM: MM5 - Paranal

Cross section to 20º S

Potential Vorticity (PV) (shadows colors)

Specific humidity (black lines)

TrajectoriesOmar Cuevas: MM5 userUniversidad de Valparaíso 2003-2004 & 2006

Universidad de Chile2004-2005

Boundary Conditions

NCAR/GFSECMWF

Atmospheric Modelling

MM5: Pre & Post Processing

GFSECMWFETA…

TERRAIN

REGRID

INTERPF

MM5/MPP

RIPGrADSVis5D

Macon project (2006-2007) ESO-UV contract (Marc Sarazin)

+ Arlette Chacón

Objectives:

• Description of the zone: Orography and Climatology.• Statistical analysis of turbulence data and seeing.• Meteorological analysis for some events registered of seeing.• Analysis of meteorological data of stations in-situ.• Analysis of turbulence (Ri y TKE) and comparison with real data measured of seeing and turbulence (Cn2).

Jan. 30th, 2008Jan. 30th, 2008 Astromet-UVAstromet-UV

AstroMeteorology –Team

Configuration of the model Module TERRAIN Example for Macón zone

D1: 80 x 80 grids points. 27 km horizontal resolution.

D2: 70 x 97 grids points. 9 km horizontal resolution.

D3: 100 x181 grids points. 3 km horizontal resolution.

D4:73 x 85 grids points. 1 km horizontal resolution.

ParanalMacon

Description of the zone

Climatological Analysis (Re-Analysis)

Temperature in 925 HPaClimatological

MostPredominantcondition:

AnticyclonicPredominance

MM5 Forecast

Potential high (black lines)Relative vorticity (shadows colors) Satellite image of infrared chanel GOES-12

Observed variables vs. simulated variables (MM5)

Temperature

Wind SpeedObserved & Modeled

Post-processed using aKalman filter for ECMWF data in Paranal/La Silla

Trajectories analysis: Paranal-Macón?

Domain 2

Trajectories

Trajectories analysis: Tolar-Macón?

Domain 4

Trajectory0.5 km over Macón

circulacióncerrada

Trajectories analysis: Tolar-Macón?

Example:Heights crossed by trajectories

Trajectories analysis

Statistics of turbulence and seeing data

Valid 43672

Missing 0

Mean ,9562

Median ,8209

Std. Deviation ,52784

Variante ,279

Minimum ,09

Maximum 3,09

Percentiles

25 ,5324

50 ,8209

75 1,3015

Statistics of turbulence and seeing data

Seeing vs wind speed

Number of Richardson

# Richardson for bad seeing case # Richardson for good seeing case

A dimensionless parameter whose values determines if convection is free or forced

TKE: Turbulent Kinetic Enregy

TKE for bad case of seeing

Thermal thickness: bad seeing (left) & “good” seeing (right)

Gemini-South AstroMeteorology projectAnalysis of meteorological predominant conditions to Cerro Pachón.

Analysis of observed data compared with simulated data.

Statistics on data of seeing.

Comparison of observation meteorological and simulate data with seeing data.

Trajectory analysis.

Comparison of atmospheric turbulence indexes, like TKE and Richardson number (Ri) with seeing.

Web access to results

Gemini South zone

Southern Astrophysical

Research Telescope

AstroMet web page

E-ELT - TMT

2290 m.a.s.l.

3064 m.a.s.l.

4477 m.a.s.l.

Seeing episode: Aug 13th, 2006

Tolonchar

Armazones

TERRAIN-MM5 Domain 3Resolution : 3 km

Synoptic Analysis

•Anticiclonic Predominance

• Estratiform Cloudness (Costal trough= Vaguada Costera)

• Subtropical Jet Stream, low intensity

• Stable atmosphere.

Water Vapor 00 UTC Water Vapor 03 UTC Water Vapor 09 UTC

Infrared 00 UTC

MM5 Simulation

•Anticyclonic Predominance (500 Hpa) • Positive Vorticicity (anticiclonic)

•West Circulation

• Subtropical Jet Stream (250 Hpa)

• Low intensity

• Stable Atmosphere

03 UTC 03 UTC

05 UTC 06 UTC

07 UTC

Thermal Perturbation

First 4km

Potential temp.Velocity fieldPotential vorticity

05 UTC 06 UTC

07 UTC

Tolonchar

03 UTC

04 UTC

05 UTC

Thermal Perturbation: Not ClearProbably Mechanical

First 10km

Potential temp.Velocity fieldPotential vorticity

03 UTC

05 UTC

Armazones

00 UTC

Normal “good seeing” Night

2 km1 km

Tolonchar

Armazones

Trajectory analysis

4 km 8 km

Trajectories analysis

GPS-AstroMeteorology

FINAL GOAL: www.dfa.uv.cl/astromet

• Operational forecast (GFS & MM5) for all Observatories in Chile

•Perform research in astrometeorology

•Forecast the Seeing

…therefore help to optimize the resources and programming of the Observations

FINAL GOAL

jan. 30th, 2008astromet-uveso-chile astrometeorology at the university of valparaíso...

Documents

projet de marie-arlette carlotti

farmec si seductie-arlette geneve.pdf

l'épître au curé

arlette geneve cucerirea scotianului

revista de arlette

arlette-geneve - beresford - 3 salveaza-ma.pdf

don jean pichon + -1- curé

arlette marlen geyer alarcón - ulpiano.org.ve

journal d'un curÉ de campagne

iubeste ma arlette geneve

arlette et son ombre

arlette geneve - beresford - 1 - iubește-mă.pdf

vindicatio de arlette geneve

curé et sables

le bon sens du curé meslier

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