They’re requesting that more details on the so-called “hiatus” be included in a key document set to be debated at a UN conference next month that will summarize the latest scientific conclusions on climate change.

Including more information on the hiatus will help officials counter arguments that the slowing pace of global warming in recent years is a sign that the long-term trend may be discounted, according to Bob Ward, policy director at the Grantham Research Institute on Climate Change and the Environment at the London School of Economics.

 “In the public debate, there are people who are using the slowdown to say global warming is less of a problem than thought,” Ward said in an interview yesterday. “It has to be fully explained in the summary.”

A draft of the summary and the underlying 2,200-page report from the UN Intergovernmental Panel on Climate Change were obtained by Bloomberg from a person with official access to the documents who declined to be further identified because it hasn’t been published.

Government envoys from around the world will debate the final wording of the summary at an IPCC meeting that starts in Stockholm on Sept. 23. That document, formally the Summary for Policymakers, is designed to be used by ministers working to devise by 2015 a global treaty to curb climate change.