Infrared Cloud Study and Virga

January 19, 2024


Photographer: Ralph Winrich  
Summary Authors: Ralph Winrich; Jim Foster

This grim-looking photo was captured with a camera converted to infrared wavelengths only (wavelengths greater than 700 nm). It shows what virga (top center) looks like in the near infrared (800-2500 nm) portion of the electromagnetic spectrum over the farmlands of south-central Wisconsin. This type of photography may help to enhance certain cloud features, in this case, precipitation falling from clouds. Photo taken on October 10, 2023.

Photo details: Nikon D 40 camera, converted to IR wavelengths only; 18 mm; ISO 200; 1/320 second exposure.

Dunkirk, Wisconsin Coordinates: 42.867, -89.200

Related Links:

Three Distinct Cloud Decks Above the White Mountains of California

Physics of Near Infrared Photography