Without citing any reason, including the fact that he is facing a complaint from a woman staffer filed with the police, Pachauri wrote to UN Secretary General Ban Ki-moon that he has decided to step down from the Chair of IPCC, which he has headed for 13 years, "some months" before completion of the term.
"The IPCC needs strong leadership and dedication of time and full attention by the Chair in the immediate future, which under the current circumstances I may be unable to provide, as shown by my inability to travel to Nairobi to chair the plenary session of the Panel this week.
74-year-old Pachauri, who shared Nobel Peace Prize in 2007 with former US Vice President Al Gore for work on climate issues, heads TERI, where a woman employee has filed a complaint with the police levelling allegations of sexual harassment.
Pachauri's decision to resign was made public by the IPCC at its ongoing 3-day 41st Session from today.
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Granted interim protection from arrest till February 26 by a Delhi court yesterday, Pachauri claimed in his letter to Ban that he wanted to end his spell as Chairman, IPCC on November 2 last year in Copenhagen but close friends and colleagues advised him against that and wanted him to continue with outreach efforts worldwide.
"The Bureau of the Intergovernmental Panel on Climate Change agreed on Tuesday, in accordance with its procedures, to designate Vice-Chair Ismail El Gizouli as Acting IPCC Chair," the IPCC said in a press release.
"The designation of Gizouli follows the decision by Rajendra K Pachauri to step down as Chairman of the IPCC effective today," it said.