Reactivit'Air

As part of my postdoctoral work at the Finnish Meteorological Institute, I developed a new implementation of the Comparative Reactivity Method to measure total hydroxyl (OH) reactivity from ambient air and emissions. The description of the instrument and results from our first study in Helsinki to test the instrument's performances have been published in Atmospheric Environment (open access). The total OH reactivity (also called total OH loss rate) is a measure of how much reactive compounds are present in the air. A higher amount of compounds reduces the lifetime of OH. It appears that the total OH reactivity in forested environments is higher than expected from known measured compounds, mostly volatile organic compounds (VOCs) emitted from the vegetation. In order to study this missing OH sink also observed in the summer in the boreal forest (Sinha et al., 2010; Nölscher et al., 2012) during various seasons, Dr. Heidi Hellén proposed to develop an instrument based on the

I was invited as a guest lecturer at the University Centre in Svalbard (UNIS) in Longyearbyen between 4 and 8 September 2017. This was a unique opportunity on so many levels! As part of the course AGF-213 Polar Meteorology and Climate ,   undergraduate students also learn about atmospheric chemistry, the part of the course for which I was in charge. It was a great opportunity to review and refresh my knowledge on many topics that are not part of my everyday research and their relevance to the polar regions such as: stratospheric chemistry, in particular the ozone hole in the Southern atmosphere and the possible development of one in the Northern Hemisphere   black carbon and its influence on snow melt in the Arctic ( ask president Niinistö !),  as well as geochemical cycles and their effects on the climate . Longyearbyen (and in particular UNIS) is a very special place: it feels vibrant despite the remote location of the settlement and all the modern comfort is available. On

Here we are! Today marks the start of my Research Fellowship from the Academy of Finland . It also marks the launch of this blog to present my research and reach out to an audience beyond my research community. Being awarded the Fellowship feels like a small breakthrough in my scientific career. I have been working on various proposals during my time as a postdoc and finally my project was ripe enough to be favorably received by my peers. You will find a description of the project in a separate page: REAC-FORTE . In today's blog post, I simply wanted to reflect on the changes implied by my new title of Academy Research Fellow . What changes? Funding:  I now have my own funding source for my salary and also for research costs (including the salary of one graduate student!) Independence: My level of independence increased as a result of the new funding source and I am now a Principal Investigator (PI). Responsibilities:  As PI, I am in charge of the project and I am respo