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Definition
Full name
Cosmic ray neutron flux
Definition
Flux of neutrons near the surface of Earth due to collisions in the atmosphere of cosmic rays impacting Earth atmosphere from the Sun and outer space.
Measuring Units
neutrons·h-1
Uncertainty Units
%
Horizontal Res Units
km
Vertical Res Units
Stability Units
% (Stability /decade)
Comment:
A proxy of the high energy radiation striking Earth atmosphere from space. The neutron monitors counting rates (sensitive to the low energy portion of the spectrum, 1-20 Gev) should be corrected for atmospheric pressure effects.
For ground level energetic particle detection. Note hat the horizontal resolution varies with latitude and longitude. Higher resolution is needed in latitude, in particular at high to middle latitudes where the cut-off boundary exists for incident particles.
Last modified: 2014-03-27
Applied in OSCAR/Space Gap Analysis: No
Classification
Domain: Outer Space
Sub-domain: Energetic particles and solar wind
Variable: Cosmic ray neutron flux
Earth System Application Categories and its related Application Areas:
1. Space Weather Applications
Unknown:
Requirements defined for Cosmic ray neutron flux (1)
This tables shows all related requirements. For more
operations/filtering, please consult the full list of
Requirements Note: In reading the values, goal is marked blue ,
breakthrough green , threshold orange Magenta and Relative priority of the attributes Red
Id
Variable
Layer
App Area
ATP Uncertainty
Layer/s Quality
Coverage Quality
Stability / decade
Hor Res Ver Res Obs Cyc Timeliness
Coverage
Conf Level
Val Date
Source
General Comment
Application Area Comment
Horizontal Coverage Comment
Observation Comment
Performance Comment
576 Cosmic ray neutron flux Near Surface Space Weather
5 % 10 % 25 %
1000 km 2000 km 5000 km
60 sec5 min10 min 5 min10 min30 min Global tentative 2011-05-01
ICTSW-1
plasmasphere boundary, radiation and electrostatic discharge risk, communication disruption
Variable:
Cosmic ray neutron flux