[2] In 1982, Sircar was the first to suspect and draw public attention to the covert competition between India and Pakistan over the Siachen Glacier and coined the term Oropolitics to describe the use of mountaineering expeditions as a cloak for establishing territorial claims.
[3] The full essay titled "Oropolitics" came out in Himalaya Sameeksha, a limited circulation magazine published by Kamala Mukherjee in Calcutta, and was subsequently reprinted in the prestigious Alpine Journal of London in 1984.[1].
Sircar surmised the existence of a feasible pass in Himachal Pradesh, India on the Himalayan divide between Kullu and Spiti Districts.
He drew the attention of the Bombay Natural History Society in 2001 to the presence of large numbers of the endangered Bar-headed goose at Gharana Wetland Reserve, Jammu, which eventually led to this neglected sanctuary on the Indo-Pak border being classified as an Important Bird Area[5] He is also avidly interested in history and military matters, particularly aviation, and was the first to compose a brief biography of the World War II Beaufighter ace Flying Officer A.M.O.
A selection of his English poetry is available in Poemhunter [5] In a recent article, Sircar has claimed to have solved the mystery of the Lake of No Return, Myanmar, which he visited in 2002.