This website uses cookies. By continuing to use this website you are agreeing to our use of cookies. 



INCOMPASS: Radiosonde measurements from the Indian Institute of Technology (IIT) airstrip, Kanpur, India

Latest Data Update: 2018-10-18
Status: Completed
Online Status: ONLINE
Publication State: Citable
Publication Date: 2018-10-18
Download Stats: last 12 months
Dataset Size: 139 Files | 156MB


This dataset contains temperature, humidity, wind and GPS location information recorded from 137 radiosondes launched during July 2016 as part of the NERC/MoES Interaction of Convective Organization and Monsoon Precipitation, Atmosphere, Surface and Sea (INCOMPASS) field campaign. All radiosondes were launched from the airstrip of Indian Institute of Technology (IIT) Kanpur, Uttar Pradesh, northern India, from the location 26.519N, 80.233E, 126m above sea level. Launches took place between 5th July and 28th July at 00, 06, 12, 18UTC. The Vaisala RS41-SG radiosondes were fitted to Totex TA350 balloons.

The data were collected as part of the INCOMPASS field campaign May-July 2016, funded by Natural Environmental Research Council (NERC) (NE/L01386X/1). The aim of the project was to improve the skill of rainfall prediction in operational weather and climate models by way of better understanding and representation of interactions between the land surface, boundary layer, convection, the large-scale environment and monsoon variability on a range of scales.

Citable as:  University of Reading; Indian Institute of Technology Kanpur; Turner, A.G.; Tripathi, S.N.; George, G.; Chakraborty, T.; Fletcher, J.K.; Hunt, K.; Sarangi, C.; Willetts, P.J.; Recchia, L. (2018): INCOMPASS: Radiosonde measurements from the Indian Institute of Technology (IIT) airstrip, Kanpur, India. Centre for Environmental Data Analysis, date of citation. doi:10.5285/28a48da1141447058f8d5323908e4b3d.
Abbreviation: Not defined
Keywords: NERC, INCOMPASS, monsoon, radiosonde, temperature, humidity, wind


Previous Info:
No news update for this record
Previously used record identifiers:
No related previous identifiers.
Access rules:
Access to these data is available to any registered CEDA user. Please Login or Register for an account to gain access.
Use of these data is covered by the following licence: When using these data you must cite them correctly using the citation given on the CEDA Data Catalogue record.
Data lineage:

The Vaisala MW41 DigiCora sounding station receives radiosonde measurements via telemetry and stores them in a packaged (zipped) format consisting of XML files. Only the "SynchronizedSoundingData.xml" file has been used (one for each launch), and converted to Netcdf (by AG Turner during September 2018) using a program running in IDL8.5. The data were then sent to the Centre for Environmental Data Analysis (CEDA) for archiving.

Data Quality:
Known errors: contains no usable ascent data. A replacement launch was made soon after, "…". appears to have an underfilled or leaking balloon, since there are several periods of ascent/descent within the profile.
File Format:
Data are netCDF formatted.

Related Documents

No documents related to this record were found.

Process overview

This dataset was generated by instruments deployed on platforms as listed below.
Output Description


  • standard_name: status_flag
  • long_name: PTU_status
  • var_id: PTU_status
  • units: hPa
  • var_id: p
  • standard_name: air_pressure
  • long_name: air_pressure
  • units: K
  • standard_name: air_temperature
  • var_id: ta
  • long_name: air_temperature
  • standard_name: status_flag
  • long_name: dropping_status
  • var_id: dropping
  • units: m s-1
  • standard_name: eastward_wind
  • var_id: ua
  • long_name: eastward_wind
  • units: m
  • standard_name: height
  • var_id: z
  • long_name: height_above_mean_sea_level
  • units: m s-1
  • standard_name: northward_wind
  • var_id: va
  • long_name: northward_wind
  • units: m
  • long_name: radiosonde_east_distance_since_launch
  • var_id: east
  • units: m
  • long_name: radiosonde_north_distance_since_launch
  • var_id: north
  • units: m
  • long_name: radiosonde_up_distance_since_launch
  • var_id: up
  • standard_name: relative_humidity
  • units: %
  • long_name: relative_humidity
  • var_id: hur
  • long_name: time
  • var_id: time
  • units: degree
  • standard_name: wind_from_direction
  • var_id: wind_direction
  • long_name: wind_from_direction
  • standard_name: status_flag
  • long_name: wind_interpolated_status
  • var_id: wind_interp
  • units: m s-1
  • standard_name: wind_speed
  • var_id: wind_speed
  • long_name: wind_speed

Co-ordinate Variables

  • units: degree_north
  • standard_name: latitude
  • var_id: latitude
  • long_name: latitude
  • units: degree_east
  • standard_name: longitude
  • var_id: longitude
  • long_name: longitude
Temporal Range
Start time:
End time:
Geographic Extent