COST Action ES1005

TOSCA - Towards a more complete assessment of the
impact of solar variability on the Earth’s climate


TOSCA is a multidisciplinary European network of scientists from 20 countries whose objective is to provide a better understanding of the hotly debated role of the Sun in climate change. This action aims at assessing the various contributions of solar variability to the Earth’s climate by bringing together solar physicists, space scientists, atmospheric scientists, climate modellers, paleoclimatologists, and more.

TOSCA started in June 2011 and will last for 4 years. As for other COST (Cooperation in Science and Technology) actions, the main role of TOSCA is to foster interactions between different communities.

TOSCA has 5 working groups

  1. WG1 impact of solar radiative forcing

  2. WG2 impact of interplanetary perturbations

  3. WG3 impact of energetic particles

  4. WG4 interfacing between upper and lower atmospheric layers and corresponding models

  5. WG5 outreach and dissemination (GHOST)

  1. BulletLearn more about TOSCA

  2. BulletDownload TOSCA flyer

  3. BulletLearn more about COST


What TOSCA is

Latest news

[24/11/2015] The TOSCA handbook is out !

> link

[3/7/2015] TOSCA movies are now online

> watch them

[20/5/2015] TOSCA is officially ending on May 31, 2015.

[24/3/2015] Over 100 participants attended the Sun-climate connections conference in Kiel

> More information

[6/3/2015] Over 90 participants expected at the final TOSCA science meeting in Kiel

[6/1/2015] Last call for STSMs has ended.  27 STSMs have been funded by TOSCA.

[20/11/2014] Registration is open for the Sun-climate connections meeting in Kiel (March 16-19)

> More information

[17/10/2014] Second training school at ICTP has just ended: one week, over 30 students, lots of team work

> More information

TOSCA has now ended...

... but the action lives on. The handbook “Earth’s climate response to a changing Sun”, which summarises our present understanding of the Sun-climate connection, came out in November 2015 [link, flyer], and new projects are taking shape.

See also this article that was published in EOS in September 2018 [link]