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Data sets

LEVEL 0: RINEX observation data LEVEL 1 product: Near real time tropospheric parameters (raw estimates) LEVEL 2 product: Long term trend station coordinates - as absolute gravity aligned dN,dE,dU LEVEL 2 product: Long term trend tropospheric parameters - as as dZTD,dZWD,dIWV LEVEL 3 product: Long term trend station velocities - as a map of vertical motions showing spatial variations, with some consideration of the station’s geological setting LEVEL 3 product: Near real time changes in tropospheric parameters, as an animated map of 15 minute IWV estimates for one day

BIGF provides a unique source of quality assured RINEX format GNSS data and derivative products for the British Isles. There is also the opportunity to design and create new products, to facilitate downstream research, where for example scientists are unfamilar with GNSS data or do not have the necessary data processing capability. We anticipate for example, that scientists such as meteorologists will have a need for atmospheric water vapour products. For non-standard product design issues please contact us, otherwise data sets are divided into 4 levels - from raw data (level 0) to products (levels 1-3), described below:


Description LEVEL 0 - GNSS RINEX observation and related data


Description LEVEL 1 - Raw product

  • How to access these products.
  • Long term trend station coordinates (raw estimates). A set of daily, network-specific SINEX files containing station-specific coordinate estimates from each daily processing solution, as text, sample.
  • Long term trend tropospheric parameters (raw estimates). A set of daily, network-specific SINEX TRO files containing station-specific 1 hourly troposphere zenith total delay estimates from each daily processing solution, as text, sample.
  • Under development - Long term trend ionospheric parameters (raw estimates). A set of daily, network-specific IONEX files containing grid-point-specific 1 hourly ionospheric vertical total electron content estimates from each daily processing solution, as text.
  • Near real time tropospheric parameters (raw estimates). A set of hourly, network-specific COST-716 files containing station-specific 15-minute tropospheric zenith total delay, zenith wet delay and integrated water vapour estimates, as text, sample.
  • Under development - Near real time ionospheric parameters (raw estimates). A set of hourly, network-specific IONEX files containing grid point-specific 1 hourly ionospheric vertical total electron content estimates, as text.


Description LEVEL 2 - Product time series

  • How to access these products.
  • Long term trend station coordinates (QA’d time series). A set of station-specific files containing station-specific daily coordinate estimates and time, based on the estimates in the daily SINEX files, as text: Cartesian X,Y,Z sample; Cartesian dX,dY,dZ sample; or North,East,Up (dN,dE,dU) sample; and as graphics: dN,dE,dU sample; and as absolute gravity aligned dN,dE,dU sample.
  • Long term trend tropospheric parameters (QA’d time series). A set of station-specific files containing station-specific hourly, daily-averaged or monthly averaged tropospheric zenith total delay, zenith wet delay, and integrated water vapour estimates and time, based on the estimates in the daily SINEX TRO files, as text: ZTD,ZWD,IWV sample; and as graphics: dZTD,dZWD,dIWV sample.
  • Under development - Long term trend ionospheric parameters (QA’d time series). A set of grid-point-specific files containing grid-point-specific hourly ionospheric vertical total electron content and change in vertical total electron content from the previous hour estimates and time, based on the estimates in the daily IONEX files, as text: VTEC, ΔVTEC and as graphics: dVTEC, dΔVTEC.
  • Under development - Near real time tropospheric parameters (QA’d time series). A set of station-specific files containing station-specific 15 minute tropospheric zenith total delay, zenith wet delay, and integrated water vapour estimates and time, based on the estimates in the hourly COST-716 files - as text and as graphics (e.g. time series of ZTD, ZWD, IWV for the past week).
  • Under development - Near real time ionospheric parameters (QA’d time series). A set of grid-point-specific files containing grid-point-specific hourly ionospheric vertical total electron content and change in vertical total electron content from the previous hour estimates and time, based on the estimates in the hourly IONEX files as text and as graphics (e.g. time series of VTEC, ΔVTEC for the past week).


Description LEVEL 3 - Product trend

  • How to access these products.
  • Long term trend station velocities. One network-specific file containing station-specific velocities and their uncertainties based on a time series analysis of the coordinates in the daily SINEX files, as text, sample, and as graphics (e.g. a map of vertical motions showing spatial variations, with some consideration of the station’s geological setting, sample).
  • Under development - Long term trend changes in tropospheric parameters. One network-specific file containing station-specific rates of change and periodic variations in hourly, daily-averaged or monthly-averaged tropospheric zenith total delay, zenith wet delay and integrated water vapour, together with their uncertainties, based on a time series analysis of the estimates in the daily SINEX TRO files - as text and as graphics (e.g. a map of IWV changes showing spatial variations).
  • Near real time changes in tropospheric parameters. A set of network-specific files containing station-specific 15 minute tropospheric zenith total delay and integrated water vapour estimates, based on the estimates in the hourly COST-716 files - as graphics (e.g. animated maps of 15 minute IWV estimates for one day showing temporal and spatial variations, sample).
  • Under development - Near real time changes in ionospheric parameters. A set of network-specific files containing grid-point-specific hourly ionospheric vertical total electron content and change in vertical total electron content from the previous hour estimates, based on the estimates in the hourly IONEX files as graphics (e.g. animated maps of hourly VTEC estimates for one day showing temporal and spatial variations).