Data sets
BIGF provides a unique source of quality assured raw 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
- How to access these data.
- RINEX observation data at a 30-second data rate, sample.
- RINEX observation metadata, based on 30-second data, as monthly updated text time series, sample, and as graphic time series, samples.
- RINEX observation data at a 1Hz data rate.
- RINEX navigation data (broadcast ephemeris), sample.
- RINEX observation data file header record change catalogue, with explanatory notes at the end of file.
- Station log files.
Description LEVEL 1 - Raw product
- How to access these products.
- Long term trend of 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.
- Coming soon - Long term trend of station coordinates (raw estimates). A set of weekly network-specific SINEX files containing station-specific coordinate estimates from a combination of 7 daily processing solutions (as text).
- Long term trend of 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.
- 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.
Description LEVEL 2 - Product time series
- How to access these products.
- Long term trend of 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 of tropospheric parameters (QA’d time series). A set of station-specific files containing station-specific hourly tropospheric zenith total delay, zenith wet delay, 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 - coming soon).
- Coming soon - 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, integrated water vapour estimates and time, based on the estimates in the hourly COST-716 files (as text and graphics).
Description LEVEL 3 - Product trend
- How to access these products.
- Long term trend of 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. map of vertical motions showing spatial variations, with some consideration of the station’s geological setting, sample.
- Coming soon - Long term trend of station velocities. One network-specific cumulative weekly SINEX file containing station-specific reference coordinates and velocities from a combination or stacking of several weekly files (as text).
- Coming soon - Long term trend of change in tropospheric parameters. One network-specific file containing station-specific trends in 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 graphics, e.g. map of changes showing spatial variations).
- Coming soon - Near real time trend of change 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 estimates for the past week showing temporal and spatial variations).
