41. The season for wispy cirrus clouds has begun. 42. Contrails can also trigger the formation of high-altitude Cirrus cloud thus creating a greater climatic effect. 43. Over the coast, some early morning cirrus clouds from the remnants of Hurricane Earl will gradually dissipate. 44. Jokes fly like the cirrus clouds outside. 45. As warm air is forced to glide over heavier cold air, wisps of cirrus clouds often form. 46. Inside the restaurant, there's room for 58 to sit beneath a turquoise ceiling painted with cirrus clouds . 47. Research shows that some contrails expand into huge, natural-looking cirrus clouds that cover thousands of square miles. 48. Even on a hot summer day in Massachusetts, you can see cirrus clouds , which are ice crystal clouds. 49. Contrails are similar to cirrus clouds , naturally occurring clouds found at altitudes around 20, 000 feet, Toon said. 50. Researchers have long known that cirrus clouds usually block the escape of Earth's infrared radiation, heating the planet.
