Why pass legislation when you can rule by decree.

NEW YORK — Federal agencies will need to factor how the effects of climate change, such as rising sea levels, drought, floods and other extreme weather linked to it, would affect international development programs and investments under a new executive order President Obama will issue Tuesday, according to a White House official.

Such actions likely would cover a range of infrastructure and agriculture projects, seeking to bolster the ability to withstand the effects of climate change in developing nations and elsewhere. The administration also announced it would make federal data and modeling available to other nations to give them more tools to adjust to a changing climate.

The move comes as Obama prepares to address the United Nations climate summit, where he will try to leverage his administration’s agenda into securing similar commitments from other nations. Though the summit is not part of the formal negotiating process — that begins next year in Paris — Obama plans to meet with national leaders throughout the day.