On the quality of solar irradiance measurements for photovoltaic module efficiency studies

BSRN Meeting, 28 Apr 2016, Canberra

On the representativeness and uncertainty of irradiance measurements Jordi Badosa Contributors: Martial Haeffelin, Jean-Charles Dupont, Marie-Christine Gonthier, Aurélien Faucheux, Christophe Boitel, Marc-Antoine Drouin, Florian Lapouge. LMD/IPSL, Ecole Polytechnique

A multi-parameter site (www.sirta.fr) 150 instruments 5 300 files/day 3 Go de data/day Lidar nuages-aérosols Radar nuages Radiomètre température

Météo, visibilimètres, Microphysique aérosols et nuages Isotopes de l’eau

Mât 30m: temp. humidité, visibilité, turbulence, Flux de chaleur

sodar Plateformes photovoltaïques

Coté Ouest: Mâts de 10m Bilan radiatif, albédo Turbulence

Lidar profileur de vent Images ciel météo

Radar UHF

Temp,, humidité, vent 3D Flux sol

Vue vers l’Est

Station PAL, Paris region, France

Since 2002 Since 2014 Since 2003

80m

Contribution to BSRN since 2003. Current available parameters in BSRN archive : • SWDn (DIF, DIR, GLO), LWDn • Air temperature, RH, pressure The new installation in 2014 will become reference for the site.

700m

Since May 2012

Radiative measurement locations at SIRTA 3

Since 2012

Since 2014

Since 2010-12 Since 2003 2 80m 1

Questions motivating the presentation • What is the spatial representativeness of the radiative measurements? • How the measurements from different instruments compare?

• How CMP22 global measurements compare? • What kind of sources of uncertainty do we detect from operating conditions and what are their impacts ?

Downwelling SW irradiance comparison (2015)

1 minute

GLO1

GLO2 vs GLO1 80m distance 70m

10m GLO2 GLO2 vs GLO3 620m distance

620m

GLO3

Downwelling SW irradiance comparison (2015)

10 minutes

GLO1

GLO2 vs GLO1 80m distance 70m

10m GLO2 GLO2 vs GLO3 620m distance

620m

GLO3

Downwelling SW irradiance comparison (2015)

1 minute

GLO1

GLO2 vs SPN1 10m distance 70m

10m GLO2 GLO2 vs SPLITE 10m distance

620m

GLO3

Downwelling SW irradiance comparison (2015)

10 minutes

GLO1

GLO2 vs SPN1 10m distance 70m

10m GLO2 GLO2 vs SPLITE 10m distance

620m

GLO3

Downwelling SW irradiance comparison (2015, SZA