Arctic Summer Cloud-Ocean Study
Temperature profiles
High resolution (in time and space) vertical profiles of temperature were obtained from a 60GHz scanning microwave radiometer. The radiometer measures the brightness temperature over an averaged window along the line-of-sight and by scanning in the vertical plane it provides this information at decreasingly high vertical resolution and accuracy with altitude up to 1.2 km. It was located on the starboard bridge-roof wing with a free view to starboard. The retrieval is based on a first-guess that comes from interpolation of radiosonde profiles; hence, this instrument adds information on vertical and temporal variability to the radiosonde profiles. At higher altitudes, it converges against the interpolated soundings and variability decreases while at lower altitudes it is consistent with the soundings in an average sense.
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Photo of the 60GHz scanning radiometer on the 7th deck. The sensor is located horizontally to the right; in front of that is the rotating mirror with its engine to the left.