It's been a snowy winter—not only here in Washington D.C., but also in places I travel, namely Jerusalem and Amman. The past week, the snowmelt runoff into Rock Creek in D.C. has been a sight to watch. It's also been a teachable moment for my daughter: we've talked about how snowmelt contributes to surface water flows.
Actually I talk, and she goes "okay, okay" looking out the window.
She and I have learned a few new facts to share: one is the linkage of irregular precipitation associated with global climate change.
Chris Mooney, the environment and climate change writer for the Washington Post, recently wrote a great article explaining why more snow is another result of climate change
. D.C. is on the south border of the NE of the United States, where, as you can see from the map, (provided by the US National Climate Assessment), extreme rain/snow events have increased dramatically. Similarly, in Jerusalem three weeks ago, the snow came with sleet, blueberry-size hailstones (see below) and lightning.