sondeadjust > Sonde AdjustVAP Type(s) > Baseline • Evaluation

The original (red) and corrected (blue) relative humidity profile for Vaisala RS-92 radiosondes launched at the SGP Central Facility on May 12, 2003.

The Sonde-Adjust VAP produces data that correct documented biases in radiosonde humidity measurements. Unique fields contained within this datastream include smoothed original relative humidity, dry bias corrected relative humidity, and final corrected relative humidity. The smoothed RH field refines the relative humidity from integers — the resolution of the instrument — to fractions of a percent. This profile is then used to calculate the dry bias corrected field. The final correction fixes a time-lag problem and uses the dry-bias field as input to the algorithm. In addition to dry bias, solar heating is another correction that is encompassed in the final corrected relative humidity field.

For more details, see Sonde Adjust Value-Added Product technical report.


  • Fixed
  • AMF1
  • AMF2
  • AMF3

Data Details

Contact Scott Giangrande
Resource(s) Data Directory
Content time range 28 August 1997 - 29 June 2013


Skow A, M Poellot, D Delene, M Askelson, K North, and M Oue. 2022. "A Multi-Platform In Situ Kinematic and Microphysical Analysis of a Hybrid Parallel–Trailing Stratiform Mesoscale Convective System." Monthly Weather Review, 150(4), 10.1175/MWR-D-21-0009.1.


Jensen MP, T Toto, D Troyan, PE Ciesielski, D Holdridge, J Kyrouac, J Schatz, Y Zhang, and S Xie. 2015. "The Midlatitude Continental Convective Clouds Experiment (MC3E) sounding network: operations, processing and analysis." Atmospheric Measurement Techniques, 8(1), 10.5194/amt-8-421-2015.


Sivaraman S. 2013. ARM Climate Research Facility Quarterly Value-Added Product Report January 1–March 31, 2013. Ed. by U.S. Department of Energy, DOE/SC-ARM-13-010.

Sivaraman C. 2013. ARM Climate Research Facility Quarterly Value-Added Product Report October 01–December 31, 2012. U.S. Department of Energy. DOE/SC-ARM-13-002.


Sivaraman C. 2012. ARM Climate Research Facility Quarterly Value-Added Product Report Fourth Quarter: July 1–September 30, 2012. U.S. Department of Energy. DOE/SC-ARM-12-022.

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Scott Giangrande
Brookhaven National Laboratory

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