Summary: Increasing frequency of heavy precipitation events—especially where rain falls over large areas of impermeable surfaces—is one factor that increases the threat of urban flooding.

Summary: As temperatures warm, changes in the water cycle will challenge the reliability of water supplies in some areas.

Summary: Climate change will continue to cause profound changes in the water cycle, increasing the risk of flooding, drought, and degraded water supplies for both people and ecosystems. These impacts will disproportionately impact frontline communities. While data and tools for water resources planning are improving, water infrastructure standards and management policies have been slow to meet the new challenges.

Research supported by CPO's Modeling, Analysis, Prediction, and Projections (MAPP) program has been published in Geophysical Research Letters . The study, titled "Spring Persistence, Transition and .. ...

Sea ice changes are key to polar bear health and numbers.  Only one of the evaluated groups is increasing. Several are stable; a few are already declining

Punctuating a trend of declining reflectivity, the Greenland Ice Sheet reflected less sunlight in August 2014 than it did in any previous summer on record.

Compared to 2012’s extreme warmth, surface water temperatures were more moderate in summer 2014. Nevertheless, pockets of very warm temperatures existed.

Summary: Explore how the distribution of almost 650 marine species—including those of interest to commercial and recreational fishing—have changed over the past 40 years.

The latest installment of NOAA's Arctic Report Card confirms that Arctic air temperatures are rising at more than twice the rate of the planet as a whole. This collection of images highlights some of the key changes in physical and biological conditions in the Far North.

If we look only at rainfall changes, and not ocean temperatures, can we get a clearer picture of how climate change will influence ENSO? Guest blogger Mat Collins from University of Exeter explains what recent studies have to say.