The White House is expected to take new steps on Friday to help society adapt to global warming, an acknowledgment that worldwide efforts to control emissions will be inadequate to head off big climatic shifts.

White House aides said President Obama would sign an executive order on Friday morning directing federal agencies to make it easier for states and communities to build resilience against storms, droughts and other weather extremes. For instance, when federal money is being spent on projects like roads, bridges, flood control and many others, the plan would encourage greater attention to the likely climate conditions of the future, which might require making the structures stronger or larger.

“All of that is now going to be shaped by the awareness of climate change, and the things that can be done to make those investments produce a much more resilient society,” said John P. Holdren, the president’s science adviser.

In addition, the White House will set up a high-level task force of state and local leaders to offer advice to the federal government. At least six governors — all Democrats — have agreed to serve, along with mayors and other local leaders representing both political parties. The plan also calls for better coordination among federal agencies.