in the Laboratory of Environmental Chemistry (LUC)
Light amplification accelerates chemical reactions in aerosols
Consideration in future climate models important.
"We can now look at climate change regionally"
Margit Schwikowski is head of the Laboratory for Environmental Chemistry at PSI. In an interview, she explains what aerosols have to do with climate change.
‘Ice Memory Mission’ accomplished
During its expedition to the Monte Rosa massif, the international Ice Memory team extracted two ice cores over 80 meters long from Colle Gnifetti, the oldest ice in the Alps.
The glacial memory of the Monte Rosa
The next mission to preserve the climate heritage of the Pennine Alps has begun: For the Ice Memory Project, researchers set off for Monte Rosa’s Colle Gnifetti.
Particulates are more dangerous than previously thought
A precise look into the finest particles in the air shows how compounds harmful to human health are formed.
"We were shocked how far advanced the melting is already"
An international expedition with the participation of the Paul Scherrer Institute PSI discovers advanced glacial melting at an elevation of more than 4,000 metres on the Grand Combin in Valais. In the Alps, it may almost be too late for the Ice Memory project, which aims to save ice cores as a climate archive for future generations of researchers.
Chemically mapping ice forming particles
Scientists have just nucleated ice in an X-ray microscope for the first time and they created chemical maps of those responsible.
Why the Little Ice Age ended in the middle of the 19th century
In the first half of the 19th century, a series of large volcanic eruptions in the tropics led to a temporary global cooling of Earth's climate. That Alpine glaciers grew and subsequently receded again during the final phase of the so-called Little Ice Age was due to a natural process. This has now been proven by PSI researchers on the basis of ice cores.
Light from the particle accelerator helps to understand ozone decomposition
PSI researchers have developed an experimental chamber in which they can recreate atmospheric processes and probe them with unprecedented precision, using X-ray light from the Swiss Light Source SLS. In the initial experiments, they have studied the production of bromine, which plays an essential role in the decomposition of ozone in the lower layers of the atmosphere. In the future, the new experiment chamber will also be available for use by researchers from other scientific fields.