5th COPS Workshop, Hohenheim, 26-28 March 2007

Turbulence and Energy Balance

Network

Thomas FokenDepartment of Micrometeorology

University of Bayreuth

Norbert KalthoffResearch Centre Karlsruhe

5th COPS Workshop, Hohenheim, 26-28 March 2007

Content

1. Types of station

2. WEB

3. Unification

4. Map

5. Cooperation

5th COPS Workshop, Hohenheim, 26-28 March 2007

Types of Measuring Stations

• E (incl. T and partly G): Energy balance station (friction velocity, sensible and latent heat flux, ground heat flux, four components of net radiation)

5th COPS Workshop, Hohenheim, 26-28 March 2007

Types of Measuring Stations

• T: Turbulence station (friction velocity, sensible heat flux)

5th COPS Workshop, Hohenheim, 26-28 March 2007

Types of Measuring Stations

• G: Ground measurements (ground heat flux, soil temperature and moisture), also listed in soil moisture network

Soil heat flux: 0.1 mSoil temperature: 0.05 and 0.2 m (0.02, 0.1, 0.5 m)Soil moisture: 0.05 and 0.2 m (0.02, 0.1, 0.5 m)

5th COPS Workshop, Hohenheim, 26-28 March 2007

Types of Measuring Stations

• S: Sodar (and RASS) measurements

5th COPS Workshop, Hohenheim, 26-28 March 2007

Types of Measuring Stations

• E (incl. T and partly G): Energy balance station (friction velocity, sensible and latent heat flux, ground heat flux, four components of net radiation)

• T: Turbulence station (friction velocity, sensible heat flux)

• G: Ground measurements (ground heat flux, soil temperature and moisture), also listed in soil moisture network

• S: Sodar (and RASS) measurements

• Station Code: XXYYETGS (XX: Institute; YY: Number)

5th COPS Workshop, Hohenheim, 26-28 March 2007

Participants

• KA: Research Centre Karlsruhe (2 ETG, 5 T)• BT: University Bayreuth (1 ETGS, 3 ETG)• BN: University Bonn (1(2) ETG)• FR: University Freiburg (1 ETG, 1 S)• MF: Meteo France (1 ETGS, 1 ETG)• UV: University Vienna (1 T)• UL: University Leeds (3 S ???)

• Code: Station XX; Number YY + ETGS

5th COPS Workshop, Hohenheim, 26-28 March 2007

WEB Pagehttp://www.bayceer.uni-bayreuth.de

5th COPS Workshop, Hohenheim, 26-28 March 2007

Unification of Turbulence Measurements

• Calculation with the turbulence software package TK2 (University of Bayreuth)

• Data quality code for all flux measurements• Data selection according to internal

boundary layers and footprint• Uniform ground heat flux calculation

(concept: University of Bayreuth)

• Further analysis (next funding period)

5th COPS Workshop, Hohenheim, 26-28 March 2007

Quality Assurance and control

• Internal boundary layers

• Simple Footprint

1200

m

+

5

1020

N

1500m

• Quality test according to Foken & Wichura (1996)

5th COPS Workshop, Hohenheim, 26-28 March 2007

Energy Balance Network

E

E

E

E

EE

University Bayreuth

Meteo France

E

University Freiburg

T

E

Research Centre Karlsruhe

University Bonn

ET

University Vienna

E

T

T

T

TE

AMF, United States

5th COPS Workshop, Hohenheim, 26-28 March 2007

Sodar – RASS - Network

S

SR

University Bayreuth

Meteo France

University Freiburg

Research Centre Karlsruhe

S

S

University Leeds

S

SR

S

S

5th COPS Workshop, Hohenheim, 26-28 March 2007

Connection with other network

• Soil moisture network: Unification of soil measurements.

• Mesonet: Universities of Vienna, Munich, Freiburg and others

• Data transfer: non real-time (after the experiment)

• Data basis: NetCDF up to now not prepared

• ………