Radiosonde Data for: CalNex 2010

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  • VESSEL: R/V Atlantis 
  • DEPARTED: San Diego, California on 14 May, 2010
  • ARRIVED: San Francisco, California on 08 June 2010
  • Link to more CalNex 2010 pages
The radiosonde data were taken by Chris Fairall, Dan Wolfe and Sergio Pezoa from NOAA-ESRL-PSD.

The radiosonde data for CalNex on the R/V Atlantis were collected with a Vaisala receiver using Vaisala RS92 GPS radiosondes. These sondes directly measured temperature, pressure and relative humidity. By tracking the position of the sondes from GPS signals, the sondes horizontal position was measured from which the horizontal wind speed were calculated.

The data files can be accessed here (click on "Download Sonde Data" above) or at the NOAA-ESRL-PSD ftp site at:  ftp://ftp.etl.noaa.gov/et6/cruises/CALNEX_2010/Atlantis/balloon/Processed/

The raw data files have data at 1 second intervals during the sounding, with the typical assent rates, this gives data points about every 2-5 meters. For plotting these data were interpolated onto a standard 50 meter altitude grid.

Radiosonde Wind Vectors: In all plots winds speeds are in m/s. The horizontal wind vectors are plotted with arrows the whose length is proportional to the wind speed. The length of a standard wind vector of 20 m/s is shown at the bottom of each plot. Arrows pointing down indicate wind from the north, Arrows pointing right indicate wind from the west.

U.S.Dept of Commerce / NOAA / OAR / PMEL / Atmospheric Chemistry