Micrometeorological Monitoring

Micrometeorological Monitoring
Key People:

Prof Sue Grimmond
Mariana Gouvea
Simone Kotthaus
Thomas Loridan
Duick Young

Three Monitoring sites on rooftops in the centre of London:

SK – Strand Campus, King’s Building
SS – Strand Campus, Strand Building
RGS – Building of the Royal Geographical Society

Current conditions at KCL
Meteorological observations at monitoring sites 1 and 2 (SK, SS):


Incoming & outgoing long- and shortwave radiation: CNR1 (Kipp & Zonen)
UVA, UVB, PAR: SKU420, SKU430, SKL2620 (Skye Instruments)

Barometric pressure

Automatic weather station WXT510 (Campbell Scientific)

Wind speed and direction



Relative Humidity: WXT510
H2O concentration: LI840, Li7500 (Campbell Scientific)


WXT510, ARG100 tipping bucket (Campbell Scientific)

Cloud observations at monitoring sites 2 and 3 (SS, RGS):

Two Ceilometers: CL-31 (Vaisala)

Backscatter profiles allow for estimation of cloud height, mixing layer height & aerosol content

Sites approx. 4.5 km
High frequency laser
pulses to negate low power, background
Continuous operation
– data reported every 15 s


Eddy Covariance measurements at sites 1 and 2 (SK, SS)SK Flux Tower: CSAT3 and Li7500(Campbell Scientific)

Turbulent fluxes of sensible and latent heat, momentum and CO2

SS Flux Tower: CSAT3 and 2 Li840 (Campbell Scientific)

Turbulentfluxes of sensible and latent heat, momentum and CO2
Verticalprofile of CO2 and H2O

Data processing

R based spike removal routine (Vickers and Mahrt 1997)ECpack – flux processing software (van Dijk et al. 2004)TK2 – flux processing software (Mauder and Foken 2004)


Scintillometry at Strand Campus & Remote sensing of sensible heat flux

Small Aperture Scintillometers (Scintech)

(with J. Salmond, University of Auckland)

Path length < 0.25 km

Large Aperture Scintillometers (Kipp & Zonen)

Path length 0.25 km – 4.5 km*

Data processing

Iterative composite method: depending on atmospheric stability conditions


Spatial distribution of meteorological observations
Build data base for Greater London by combining several public sources:

Synoptical Sites
operation under WMO standard
London Air Quality
London Grid for Learning
Weather Underground

Meteorological Observations:

Wind speed, wind
Air temperature, dew
point temperature
Relative humidity
Incoming solar radiation
Barometric pressure