[Isocops] Fwd: Deep Space Radiation Warning (Flux change)

Nathan Schwadron nschwadron at guero.sr.unh.edu
Mon Sep 30 07:28:20 EDT 2013


Hi All

We are in the midst of a moderate space weather event. 
Code Yellow. 

Nathan


Begin forwarded message:

> From: msq at prediccs-web.sr.unh.edu (Marty Quinn)
> Subject: Deep Space Radiation Warning (Flux change)
> Date: September 30, 2013 1:45:01 AM EDT
> To: n.schwadron at unh.edu
> 
> *****  NOTE: This flux message service is under active development. The message format may change. *****
> 
> Flux rate increased from level 2 ( >         0.100 ) to level 3 ( >         1.000 ) (range in J(  6.5 MeV), ions / (s * sr * cm 2 * MeV)).
> 
> --------------
> Flux at Earth
> --------------
>           2.644  J(  2.5 MeV), ions / (s * sr * cm 2 * MeV)
>           1.513  J(  6.5 MeV), ions / (s * sr * cm 2 * MeV)
>           0.501  J( 11.6 MeV), ions / (s * sr * cm 2 * MeV)
>           0.163  J( 30.6 MeV), ions / (s * sr * cm 2 * MeV)
>           0.035  J( 63.1 MeV), ions / (s * sr * cm 2 * MeV)
>           0.004  J( 165.0 MeV), ions / (s * sr * cm 2 * MeV)
>           0.001  J( 433.0 MeV), ions / (s * sr * cm 2 * MeV)
> --------------
> Flux at Mars
> --------------
>           0.297  J(  2.5 MeV), ions / (s * sr * cm 2 * MeV)
>           0.179  J(  6.5 MeV), ions / (s * sr * cm 2 * MeV)
>           0.085  J( 11.6 MeV), ions / (s * sr * cm 2 * MeV)
>           0.023  J( 30.6 MeV), ions / (s * sr * cm 2 * MeV)
>           0.005  J( 63.1 MeV), ions / (s * sr * cm 2 * MeV)
>           0.000  J( 165.0 MeV), ions / (s * sr * cm 2 * MeV)
>           0.000  J( 433.0 MeV), ions / (s * sr * cm 2 * MeV)
> 
> -------------------------------------------------------
> Dose, Dose Equivalent Rates & Cumulative Dose at Earth
> -------------------------------------------------------
> ----
> Key:
> ----
> DoseRateEarth = Dose Rate at Earth in cGy/day
> CumDoseEarth = 5-Day Cumulative Dose at Earth in cGy
> DoseEquivRateEarth = Dose Equivalent Rate at Earth in cSv/day
> CumDoseEquivEarth = 5-Day Cumulative Dose Equivalent at Earth in cSv
> Proxies:
> 1. H2O  1g/cm2 (skin)
> 2. H2O 10g/cm2 (organ)
> 
> Shielding
> DoseRateEarth    CumDoseEarth    DoseEquivRateEarth    CumDoseEquivEarth
> 
> Al 0.3g/cm2 (spacesuit)
> 1.        1.258        1.194        2.031        1.830
> 2.        0.124        0.549        0.185        0.829
> 
> Al 1g/cm2 (nominal spacecraft)
> 1.        0.815        1.052        1.295        1.607
> 2.        0.121        0.540        0.181        0.817
> 
> Al 5g/cm2 (thick spacecraft)
> 1.        0.210        0.713        0.322        1.111
> 2.        0.106        0.489        0.160        0.748
> 
> Al 10g/cm2 (storm shelter)
> 1.        0.133        0.573        0.206        0.914
> 2.        0.092        0.440        0.141        0.682
> 
> ----
> Key:
> ----
> DoseRateMars = Dose Rate at Mars in cGy/day
> CumDoseMars = 5-Day Cumulative Dose at Mars in cGy
> DoseEquivRateMars = Dose Equivalent Rate at Mars in  cSv/day
> CumDoseEquivMars = 5-Day Cumulative Dose Equivalent at Mars in cSv
> Proxies:
> 1. H2O  1g/cm2 (skin)
> 2. H2O 10g/cm2 (organ)
> 
> Shielding
> DoseRateMars    CumDoseMars    DoseEquivRateMars    CumDoseEquivMars
> 
> Al 0.3g/cm2 (spacesuit)
> 1.        0.170        0.103        0.274        0.154
> 2.        0.015        0.025        0.021        0.036
> 
> Al 1g/cm2 (nominal spacecraft)
> 1.        0.109        0.084        0.173        0.124
> 2.        0.014        0.024        0.021        0.035
> 
> Al 5g/cm2 (thick spacecraft)
> 1.        0.026        0.039        0.040        0.058
> 2.        0.012        0.020        0.018        0.030
> 
> Al 10g/cm2 (storm shelter)
> 1.        0.016        0.027        0.024        0.040
> 2.        0.010        0.017        0.016        0.026
> 
>    Please take appropriate precautions.
>    For more information, please visit http://prediccs.sr.unh.edu/
>    PREDICCS Radiation Alarm Notification System for Flux Change

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