High-rigidity Forbush decreases: due to CMEs or shocks?

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Table A.2

Observed parameters of CME & Shock for different events.

Event	2001 Apr. 11	2001 Aug. 17	2001 Nov. 24	2002 Sep. 7	2003 Nov. 20	2004 Jul. 26

CME details
^aFirst obs. ( UT)	2001 Apr. 10 05:30	2001 Aug. 15 23:54	2001 Nov. 22 22:48	2002 Sep. 5 16:54	2003 Nov. 18 8:50	2004 Jul. 25 14:54
^bR_first (R_⊙)	2.84	3.38	4.77	4.12	6.3	4.22
^cR_last (R_⊙)	18.1	25.9	25.9	17.0	27.5	21.9
^dV_exp (km s^-1)	2880	1410	1370	1860	1650	1370
^ea_i (m s^-2)	211	–31.7	–12.8	43.0	–3.29	7.0
^f C _D	0.325	0.163	0.09	0.312	0.333	0.016
^gMC start (UT)	2001 Apr. 11 23:00	2001 Aug. 18 00:00	2001 Nov. 24 17:00	2002 Sep. 7 17:00	2003 Nov. 20 10:06	2004 Jul. 27 2:00
^hMC end (UT)	2001 Apr. 12 18:00	2001 Aug. 18 21:30	2001 Nov. 25 13:00	2002 Sep. 8 16:30	2003 Nov. 21 00:24	2004 Jul. 27 24:00
ⁱ (km s^-1)	725	600	730	544	750	900
^jR_MC (km )	2.48 × 10⁷	2.32 × 10⁷	2.63 × 10⁷	2.30 × 10⁷	1.89 × 10⁷	3.56 × 10⁷
^kB_MC (nT)	34.5	25.6	20	22.9	50	25.3
^lT_total (h)	42.1	44.9	41.1	48.9	42.1	35.7

Shock
Shock arrival (UT)	2001 Apr. 11 14:06	2001 Aug. 17 11:00	2001 Nov. 24 6:00	2002 Sep. 7 14:20	2003 Nov. 20 7:30	2004 Jul. 26 22:20
^mB^a (nT)	4.5	5	5	5.8	7	5
ⁿB^shock (nT)	32.5	33	41.5	23		26.1
^o (km s^-1)	670	501	948	550		893

Notes.

^(a)

First obs.: time in UT when the CME was first observed.

^(b)

R_first: distance in (R_⊙), where CME was first observed.

^(c)

R_last: distance in (R_⊙), where the CME was last observed in the LASCO FOV.

^(d)

V_exp: speed of CME in (km s^-1) at R_last.

^(e)

a_i: acceleration of CME in LASCO FOV in units of (m s^-2).

^(f)

C_D: the constant dimensionless drag coefficient used for the velocity profile (Sect. 2.2).

^(g)

MC start: Magnetic cloud start time in UT.

^(h)

MC end: Magnetic cloud end time in UT.

⁽ⁱ⁾

: solar wind speed in (km s^-1) at Earth during the arrival of the magnetic cloud.

^(j)

R_MC: radius of magnetic cloud in (km ).

^(k)

B_MC: magnetic field inside the magnetic cloud (nT).

^(l)

T_total: the Sun-Earth travel time in h for the CME.

^(m)

B^a: magnetic field in the ambient solar wind (in nT).

⁽ⁿ⁾

B^shock: magnetic field inside the shock sheath region (in nT).

^(o)

: near-Earth shock speed (km s^-1).

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