1.   In the Atlantic, surges of frigid air from Greenland provide energy for a similar whirlpool, the Icelandic low.

2.   In the Atlantic, surges of frigid air from Greenland provide the energy for a similar atmospheric whirlpool known as the Icelandic low.

3.   In the Atlantic, surges of frigid air from Greenland provide energy for a similar atmospheric whirlpool, the Icelandic low.

4.   Twenty years after its launch, the network that taught Americans about isobars and Icelandic lows is a cable TV staple and a big moneymaker.