Recent observations have disclosed how dramatically variable the Sun is, and how exceptional current solar activity is. From 1930s
until about 2000, the Sun was more active than during the last few thousand years. This time interval is now called the Grand Modern Maximum (GMM). However, GMM is now approaching to its end, and recent minimum activity equaled low levels of a hundred years ago.
ReSoLVE will study the causes and consequences of this exceptional recent past of the Sun, make improved modelling of the solar dynamo, and studying the effects in near-Earth environment, including the ionization in the Earth's upper atmosphere. ReSoLVE connects to a large international collaboration, comprising of a large European network, COST Action ES1005 “Towards a more complete assessment of the impact of solar variability on the Earth’s climate”, a European Infrastructure project ESPAS (Near-Earth Space Data Infrastructure for e-Science), and a Space project called eHEROES.