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Ilan Koren

Fragments of phytoplankton outer shell

When viral infection wipes out an algal bloom, fragments may turn airborne, increasing clouds and cooling the surface below

algal bloom from space

How do algal blooms spread in areas where nutrients are scarce? 

Dr. Flores on Tara

Scientists aboard the TARA investigate marine ecology

alagal bloom in the North Sea

Sea breezes may play an unwitting role in the decimation of giant algal blooms

Satellite image showing a patch of bright waters associated with a bloom of phytoplankton in the Barents Sea off Norway. Image courtesy of Norman Kuring, Ocean Color Group at Goddard Space Flight Center, NASA

Understanding how viruses attack giant algal blooms may help us understand their role in fixing global carbon

Convective clouds forming over the Amazon in a blanket smoke. Image: Prof. Ilan Koren

Weizmann Institute research shows how atmospheric particles affect cloud formation in real...


Added particles in the atmosphere could be affecting rainfall patterns

Dr. Ilan Koren. In the clouds. Cloud photo: Tamar Deutsch

What do a herd of gazelles and a fluffy mass of clouds have in common?

clouds. Photo: Tamar Deutsch

A new model for the dynamics of clouds and rain shows they behave like prey and predator

Satellite image of a marine stratocumulus system, courtesy of NASA
Some marine cloud systems reveal a puzzling pattern: a nearly perfect grid of cloud cells with hexagonal shapes