Welcome to the space weather portal of the Center of Excellence in Space Sciences India (CESSI) at the Indian Institute of Science Education and Research Kolkata (IISER Kolkata). Monitoring and predicting the physical conditions in the near-Earth space environment is critical for safeguarding space-based and space-reliant technological assets that our modern society is dependent on. Space weather is controlled and influenced by solar activity which is driven by the Sun's variable magnetic, particulate and radiative output. Based on computational modelling, big data analytics and empirical techniques applied to satellite and ground-based observations, CESSI is developing a variety of space environment monitoring and forecasting tools. This site provides access to some of our tools that are being transitioned towards operational space weather forecasting.

The main page summarizes current space- and ground-based observations of the Sun from various instruments from around the world, as well as CESSI-model based assessment and forecasting of solar activity relevant over timescales ranging from days to months to a decade. A summary assessment which is updated at least once weekly (and more frequently during rapidly changing space environment conditions) is provided based on in-house intelligence which considers diverse factors.

The data archives page provides sources and links to diverse data sets that are relevant for space weather and space climate assessment, research and analysis.

The acknowledgement page credits various data sources from which our current solar activity observations are sourced.

CESSI is supported by the Ministry of Human Resource Development, Government of India under the Frontier Areas of Science and Technology (FAST) scheme.


Center of Excellence in Space Sciences India
IISER Kolkata
Mohanpur 741246
West Bengal, India

Phone: (+91) 33 61360045
Email: cessi AT iiserkol DOT ac DOT in