Astro Meteorology at the University of Valparaso Astro

Astro. Meteorology at the University of Valparaíso Astro. Meteorology Group Omar Cuevas - Arlette Chacón Michel Curé Department of Physics and Astronomy Universidad de Valparaíso Jan. 30 th, 2008 Astromet-UV 2

History Department of Physics and Meteorology Learning MM 5 system model CONICYT - DAAD project: Stay at Munich Institute of Meteorology Jan. 30 th, 2008 Astromet-UV 3

History First MM 5 simulation For Paranal West-East Vertical Cross section Velocity field Jan. 30 th, 2008 Astromet-UV 4

History First MM 5 simulation For Paranal North - South Vertical Cross section Velocity field Jan. 30 th, 2008 Astromet-UV 5

MIM (Munich Institute of Meteorology ): MM 5 - Paranal MM 5 Domains Jan. 30 th, 2008 Astromet-UV 6

MIM: MM 5 - Paranal TKE Turbulent Kinetic Energy Present at Lower altitude levels Jan. 30 th, 2008 Astromet-UV 7

MIM: MM 5 - Paranal Trajectories Jan. 30 th, 2008 Astromet-UV 8

Omar Cuevas: MM 5 user Universidad de Valparaíso 2003 -2004 & 2006 Trajectories 15 km Universidad de Chile 2004 -2005 Cross section to 20º S Potential Vorticity (PV) (shadows colors) Specific humidity (black lines) Jan. 30 th, 2008 Astromet-UV 9

MM 5 Atmospheric Modelling Boundary Conditions NCAR/GFS ECMWF Jan. 30 th, 2008 Astromet-UV 10

MM 5: Pre & Post Processing TERRAIN REGRID MM 5/MPP RIP Gr. ADS Vis 5 D GFS ECMWF ETA… INTERPF Jan. 30 th, 2008 Astromet-UV 11

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 (Cn 2). Jan. 30 th, 2008 Astromet-UV 12

Astro. Meteorology –Team

Configuration of the model Module TERRAIN Example for Macón zone D 1: 80 x 80 grids points. 27 km horizontal resolution. D 2: 70 x 97 grids points. 9 km horizontal resolution. D 3: 100 x 181 grids points. 3 km horizontal resolution. D 4: 73 x 85 grids points. 1 km horizontal resolution. Jan. 30 th, 2008 Astromet-UV 14

Description of the zone Paranal Jan. 30 th, 2008 Macon Astromet-UV 15

Climatological Analysis (Re-Analysis) Temperature in 925 HPa Climatological Most Predominant condition: Anticyclonic Predominance Jan. 30 th, 2008 Astromet-UV 16

MM 5 Forecast Potential high (black lines) Relative vorticity (shadows colors) Jan. 30 th, 2008 Satellite image of infrared chanel GOES-12 Astromet-UV 17

Observed variables vs. simulated variables (MM 5) Wind Speed Observed & Modeled Temperature Post-processed using a Kalman filter for ECMWF data in Paranal/La Silla Jan. 30 th, 2008 Astromet-UV 18

Trajectories analysis: Paranal-Macón? Domain 2 Trajectories Jan. 30 th, 2008 Astromet-UV 19

Trajectories analysis: Tolar-Macón? Domain 4 Trajectory 0. 5 km over Macón Jan. 30 th, 2008 Astromet-UV 20

Trajectories analysis: Tolar-Macón? Macon circulación cerrada Tolar

Trajectories analysis Example: Heights crossed by trajectories Jan. 30 th, 2008 Astromet-UV 22

Statistics of turbulence and seeing data Jan. 30 th, 2008 Astromet-UV 23

Statistics of turbulence and seeing data Jan. 30 th, 2008 Astromet-UV 24

Seeing vs wind speed Jan. 30 th, 2008 Astromet-UV 25

Seeing vs wind speed Jan. 30 th, 2008 Astromet-UV 26

Number of Richardson A dimensionless parameter whose values determines if convection is free or forced # Richardson for bad seeing case Jan. 30 th, 2008 # Richardson for good seeing case Astromet-UV 27

TKE: Turbulent Kinetic Enregy Jan. 30 th, 2008 Astromet-UV 28

TKE for bad case of seeing Jan. 30 th, 2008 Astromet-UV 29

Thermal thickness: bad seeing (left) & “good” seeing (right) Jan. 30 th, 2008 Astromet-UV 30

Gemini-South Astro. Meteorology project Analysis 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 Jan. 30 th, 2008 Astromet-UV 31

Gemini South zone Southern Astrophysical Research Telescope Jan. 30 th, 2008 Astromet-UV 32

Astro. Met web page Jan. 30 th, 2008 Astromet-UV 33

E-ELT - TMT Jan. 30 th, 2008 Astromet-UV 34

Seeing episode: Aug 13 th, 2006 3064 m. a. s. l. 2290 m. a. s. l. Jan. 30 th, 2008 4477 m. a. s. l. Astromet-UV 35

TERRAIN-MM 5 Domain 3 Resolution : 3 km Tolar Tolonchar Armazones Macon Jan. 30 th, 2008 Astromet-UV 36

Synoptic Analysis • Anticiclonic Predominance • Estratiform Cloudness (Costal trough= Vaguada Costera) • Subtropical Jet Stream, low intensity • Stable atmosphere. Infrared 00 UTC Water Vapor 00 UTC Jan. 30 th, 2008 Water Vapor 03 UTC Astromet-UV Water Vapor 09 UTC 37

MM 5 Simulation 03 UTC • Anticyclonic Predominance (500 Hpa) • Subtropical Jet Stream (250 Hpa) • Positive Vorticicity (anticiclonic) • Low intensity • West Circulation • Stable Atmosphere Jan. 30 th, 2008 Astromet-UV 38

Tolar Thermal Perturbation First 4 km Potential temp. Velocity field Potential vorticity 0505 UTC 0606 UTC 07 UTC Jan. 30 th, 2008 Astromet-UV 39

Tolonchar Thermal Perturbation: Not Clear Probably Mechanical 03 UTC 04 UTC First 10 km Potential temp. Velocity field Potential vorticity 05 05 UTC Jan. 30 th, 2008 Astromet-UV 40

Armazones Normal “good seeing” Night 00 UTC Jan. 30 th, 2008 Astromet-UV 41

Trajectory analysis 1 km 2 km Tolar Tolonchar Armazones Jan. 30 th, 2008 Astromet-UV 42

Trajectories analysis 4 km Jan. 30 th, 2008 8 km Astromet-UV 43

GPS-Astro. Meteorology Jan. 30 th, 2008 Astromet-UV 44

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

FINAL GOAL • Operational forecast (GFS & MM 5) for all Observatories in Chile • Perform research in astrometeorology • Forecast the Seeing …therefore help to optimize the resources and programming of the Observations