Radiation Dose Data from the Fixed Point Surveillance Network

The Fixed Point Surveillance (FPS) network monitors radiation dose to the public in real-time due to radioactive materials in the terrestrial environment, whether they are airborne or on the ground. It includes contributions from both natural and man-made sources. The FPS network measures the total external terrestrial gamma dose both as the Ambient Dose Equivalent H*(10) and as the physical dose Air KERMA (Kinetic Energy Released in unit MAss of Material).  The contributions to external dose from 3 radioactive gases Argon-41, Xenon-133 and Xenon-135 are also reported as Air KERMA.

The tables below show the Air KERMA dose data available from the FPS network, normally as monthly summaries updated 4 times a year.  The most recent H*(10) dose rate data may be found on a shared international website EURDEP (European Radiological Data Exchange Platform) hosted by the European Union:

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