Category: Flux Towers

83 Posts

Chlorophyll fluorescence measurements

Early in July, Karolina and Herbert set up active chlorophyll fluorescence measurements at the flux tower Leinefelde run by Alexander Knohl (Univ. Göttingen) complementing the ongoing passive chlorophyll fluorescence measurements with a FLOX system operated by MPI Jena (Mirco Migliavacca). 

IMG_20190709_174047 IMG_20190710_140619 IMG_20190709_140424

Mondsee

IMG_1221Yesterday Kathi and Georg travelled to Mondsee to get the CH4 and CO2 flux measurements operational after repair of some of the equipment and gave a joint lecture in the seminar of the Department of Limnology on “Quantifying the lake-atmosphere CO2 and CH4 exchange using the eddy covariance method”.

Measurement campaign in Mezyk/Poland

IMG_4966 IMG_4919 IMG_4987 ba606998-09f5-4f4c-9062-ad1bcc9de450

Last week, Karolina, Michaela and Albin, went up to Mezyk/Poland to set up the instrumentation for a joint COS/CO2 flux and chlorophyll fluorescence campaign over a Scots Pine forest. The idea of the campaign is to quantify GPP during the “spring awakening” of photosynthesis of this evergreen species and use active and passiv chlorophyll fluorescence to diagnose functioning of the electron transport chain and evaluate the potential of sun-induced chlorophyll fluorescence as a proxy for GPP.