Meteorological and radiological sensors are attached on NEWNET stations to the Data Collection Platform (DCP).
The DCP takes meteorological measurements every second and radiological measurements every minute. All data are averaged every 15 minutes. The data are immediately available on the
NEWNET Data page.
The gamma data are evaluated for quality assurance. Comments regarding data quality and station information are also available.
Information describing the station sensors is available in the instrumentation section below.
The data listing contains 15-minute sensor averages. Note that when a data value is not available, the data position is filled with asterisks, "*". This happens when a station does
not have a particular sensor, or when a transmission error occurs. The data are generated as a "text/plain" file.
Gamma radiation, barometric pressure, temperature, and humidity are measured and recorded. Wind data are recorded but are not checked for quality assurance and are not guaranteed.
Terms used in NEWNET Data Listings are explained below:
- Date and time = universal time (the date and time at zero longitude) or what is sometimes referred to as Greenwich Mean Time (GMT) or ZULU Time.
- Gamma = The level of gamma radiation is reported in micro Roentgens (µR) per hour. A "Roentgen" is a unit that describes the ionizations, or removal of electrons from atoms, in air that are caused by gamma rays. One µR = .001 milliRoentgens (mR) or .000001 Roentgens (R).
- Doses from nuclear radiation are expressed in "rem," which stands for Roentgen equivalent man. The rem accounts for the fact that different types of radiation may have different biological effects. It is a measure of absorbed radiation dose. One Roentgen (R) of gamma radiation over the whole body is approximately 1 rem.
The government has established Radiation limits. These limits are 5 rem per year for occupational exposure (radiation workers), as well as a limit of 100 millirem per year above background from man-made sources for the general public. Background radiation levels vary with altitude (increased cosmic radiation at higher elevations) and local geology. You can calculate the radiation in your environment using the Dose Calculator in the NEWNET Interactive section.