Speedwell Recalibrated Data Sets are discontinuity-adjusted temperature time-series where historic observations are rebased to current observing conditions.
Such adjustments can make a material difference to the historical data set used for valuing risk transfer contracts are particularly relevant for heavily traded reference sites such as the HDD and CDD contracts listed on the CME.
Using proprietary software and a deep analysis of the metadata documenting the instrumentation, the historical data is adjusted for known or inferred discontinuities that have accumulated over the lifetime of the observations.
These adjustments may arise from instrumentation changes or changes to the location of the measuring instruments.
Recalibrated Data Sets are updated regularly to capture latest changes.