Data Access

IMP 8 Cosmic Ray Nuclear Composition (CRNC) hourly energetic proton fluxes

ResourceID

spase://NASA/NumericalData/IMP8/CRNC/Protons_PT1H

Description

This data set contains hourly, spin-averaged fluxes of protons from the IMP8. Cosmic Ray Nuclear Composition experiment of U. Chicago and UNH. There are are fluxes of protons in 9 energy bins from 11.24-12.62 to 74.50-94.78 MeV. These fluxes were generated at GSFC/SPDF from count rates accessible from UNH.

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Details

Version:2.2.9

NumericalData

ResourceID

spase://NASA/NumericalData/IMP8/CRNC/Protons_PT1H

ResourceHeader

ResourceName

IMP 8 Cosmic Ray Nuclear Composition (CRNC) hourly energetic proton fluxes

ReleaseDate

2021-03-11 18:39:11Z

Description

Acknowledgement

Acknowledge the late John A. Simpson, the original CRNC PI, and Clifford Lopate/UNH, current PI.

Contacts

	Role	Person	StartDate	StopDate	Note
1.	PrincipalInvestigator	spase://SMWG/Person/Clifford.Lopate

InformationURL

Name

Readme file at SPDF

URL

https://spdf.gsfc.nasa.gov/pub/data/imp/imp8/particles_uchi/hourly/protons/aareadme.txt

InformationURL

Name

Comprehensive data descriptive file

URL

https://spdf.gsfc.nasa.gov/pub/data/imp/imp8/particles_uchi/15min_asci/voldesc.sfd

Description

SFDU-formatted file describing the CRNC instrument and the 15-min data set of count rates and pulse height data from which the hourly rates data set was created. Division of hourly rates by geometric factor and energy band widths yielded the hourly fluxes.

PriorIDs

spase://VEPO/NumericalData/IMP8/CRNC/Protons_PT1H

spase://VSPO/NumericalData/IMP8/CRNC/Protons_PT1H

AccessInformation

RepositoryID

spase://SMWG/Repository/NASA/GSFC/SPDF

Availability

Online

AccessRights

Open

AccessURL

Name

FTPS from SPDF (not with most browsers)

URL

ftps://spdf.gsfc.nasa.gov/pub/data/imp/imp8/particles_uchi/hourly/protons/

Description

ftp access to proton-specific subdirectory holding annual ASCII files

AccessURL

Name

HTTPS from SPDF

URL

https://spdf.gsfc.nasa.gov/pub/data/imp/imp8/particles_uchi/hourly/protons/

Description

In CDF via HTTP from SPDF

AccessURL

Name

FTPBrowser

URL

https://omniweb.gsfc.nasa.gov/ftpbrowser/imp_chi_crnc_1h.html

Description

Subset, plot and list fluxes of protons, alpha particles and electron, and count rates of heavies, via FTPBrowser

AccessURL

Name

Multi-Source Spectral Plot

URL

https://omniweb.gsfc.nasa.gov/ftpbrowser/flux_spectr_m.html

Description

Spectral plots and power law fits for arbitrary durations

Format

Text

DataExtent

Quantity

Units

Per

P1Y

Acknowledgement

Acknowledge C. Lopate, J. Simpson, and GSFC/SPDF (Space Physics Data Facility)

InstrumentIDs

spase://SMWG/Instrument/IMP8/CRNC

MeasurementType

EnergeticParticles

TemporalDescription

TimeSpan

StartDate

1973-10-30 00:00:00

StopDate

2001-10-26 00:00:00

Cadence

PT1H

ObservedRegion

Heliosphere.NearEarth

Parameter #1

Name

Time

ParameterKey

Column_1-Column_3

Description

Time at start of flux average, as year, day, hour

Cadence

PT1H

Structure

Size

Description

year, day, hour

Support

SupportQuantity

Temporal

Parameter #2

Name

Fractional Coverage

ParameterKey

Column_4

Description

Fractional counting coverage (0-1) during this hour

Cadence

PT1H

Support

SupportQuantity

Temporal

Parameter #3

Name

Proton fluxes

ParameterKey

Column_5-Column_13

Description

Spin-integrated fluxes of protons, at 1-hour resolution, in nine energy bins: 11.24-12.62, 12.62-16.18, 16.18-20.00, 20.00-29.75, 29.75-40.10, 40.10-50.90, 50.90-62.55, 62.55-74.50, 74.50-94.78 MeV

Cadence

PT1H

Units

1/sec-cm**2-ster-MeV

Structure

Size

Description

Array of fluxes at 9 energy windows

Particle

ParticleType

Proton

ParticleQuantity

NumberFlux

AtomicNumber

EnergyRange

Low

11.24

High

94.78

Units

MeV