The portable meteorological station provides all the necessary instruments and
equipment for surface observations and charting the winds aloft by pibal ascents
. Volume 2, No. 2, of the Army Air Forces Weather Service Bulletin, p. 10.
Image ID: wea03633, NOAA's National Weather Service (NWS) Collection Credit: Headquarters Weather Wing Army Air Forces; Courtesy of the family of Nels Johnson, United States Weather Bureau (dec.)