Odds are back on for the development of La Niña this fall. Our blogger discusses what happened during September to change the forecast. 

Summary: This program brings together multiple state, federal, and sometimes tribal and local agencies to reduce the risk of—and enhance response and recovery from—flooding and other natural disasters in the United States.

Summary: Melting ice on Arctic land is contributing to global sea level rise. Atmospheric and oceanic currents spread changes that occur in the Arctic to other parts of the world.

Summary: Environmental changes in the Arctic can disrupt the health, quality of life, and economy of Arctic peoples, especially in isolated rural villages where many native peoples follow subsistence lifestyles.

Summary: Declining sea ice opens opportunities for shipping, oil and gas extraction, mining, and tourism. These activities can stimulate the economy, but they bring new risks to people and ecosystems across the Arctic.

Summary: As the climate warms, portions of “permanently” frozen ground are beginning to thaw, changing how water interacts with the land and reducing the stability of soils beneath buildings, homes, and roads.

Summary: The impacts of rapid warming in the Arctic include earlier spring snowmelt, reduced sea ice, widespread glacier retreat, warmer permafrost, and drier landscapes.

Summary: Rising temperatures are changing processes that control the buildup and melt of snowpack, the growth or decline of glaciers, and the timing and quantity of streamflow in the Arctic.

This map show the locations of Hawai'i and U. S.-Affiliated Pacific Islands, and highlights U. S. Exclusive Economic Zones and Marine National Monuments (MNM). Map by Laura Brewington, 2016. Used with ...

Summary: Climate change—especially sea level rise, altered rainfall patterns, and rising ocean and air temperatures—impairs access to clean water and healthy food, undermines human health, threatens cultural resources and the built environment, exacerbates inequities, and disrupts economic activity and diverse ecosystems in Hawaiʻi and the US-Affiliated Pacific Islands. Adaptation efforts that build upon community strengths and center local and Indigenous Knowledge systems improve resilience.