MDI Observables: mdi.fd_V

MDI Resident Archive

MDI Observables

mdi.fd_V_30s

Description

Doppler velocity from 30-second observations in full-disc mode, sampled at seconds 00 and 30. Although 30-second observations are regularly acquired at second 00 during campaigns, this series is only populated during minutes in which Doppler data were acquired during both halves of the minute. The data are acquired in either linear or circular polarization, typically alternating.

There is one record per 30 sec, but only during minutes when there are two images.

Coverage / Duty Cycle

The fraction of possible time intervals containing partial or complete images during each mission phase is as follows:

	<1996.04.20 (Record count only)	1996.04.20 – 1996.05.22	1996.05.23 – 1998.06.24	1998.10.20 – 1998.12.21	1999.02.03 – 2010.09.14	2010.09.14 – 2011.04.12	>2011.04.12 (Record count only)
Partial	0	0	.02441	.00002	<0.00001	0	0
Complete	0	0	.02199	.00001	<0.00001	0	0

Most of the data were obtained during the following campaign intervals:

1996.09.05 17:07:00 – 1996.09.06 03:48:30
1996.09.12 16:07:00 – 1996.09.13 01:35:30
1996.09.13 23:57:00 – 1996.09.14 03:46:30
1996.09.14 09:18:00 – 1996.09.15 04:31:30
1996.09.15 14:12:00–23:08:30
1996.09.16 16:48:00–22:46:30
1996.10.05 04:05:00 – 1996.10.05 08:55:30
1996.10.08 02:00:00–09:09:30
1996.10.08 14:51:00–15:14:30
1996.12.13 18:20:00–18:44:30
1996.12.15 18:03:00 – 1996.12.19 01:30:30
1997.06.19 00:22:00 – 1997.06.30 23:16:30
1997.08.29 19:17:00 – 1997.08.30 01:25:30
1997.10.12 18:41:00 – 1997.10.13 05:16:30
1997.10.13 18:47:00 – 1997.10.14 08:09:30
1997.10.14 16:20:00 – 1997.10.15 05:02:30

Additional data were taken as part of very brief test/validation sequences only at the following times:

1996.07.26 16:25:00–16:26:30
1996.07.26 16:41:30–16:42:30 (but missing 16:41:00 and 16:42:00)
1996.07.26 17:06:00–17:07:30
1996.07.26 17:22:30–17:23:30 (but missing 17:23:00)
1996.07.26 17:48:00–17:49:30
1996.08.06 19:32:00–19:33:30
1996.08.14 18:42:00–18:43:30
1996.09.16 04:49:00–04:50:30
1996.09.16 10:13:00–10:19:30
1998.11.10 20:25:00–20:26:30
2002.08.06 21:54:00–21:59:30
2006.07.27 20:55:00–20:58:30
2007.03.22 16:09:00–16:12:00 (but missing 16:10:30)
2007.03.22 16:39:00–16:59:00 (but missing half the records; see note)
2007.03.28 17:45:00–17:49:30

Superseded records: 0 in addition to 53632 valid

Data Storage

Statistics of SUMS data storage:

SUMS directories: 499
Average size (MB): 96.726
Minimum size (MB): 3.227
Maximum size (MB): 107.973
Total size (GB): 47.135

DSDS Source Series

sha.dsds[mdi][lev1.5][fd_V_30s_01h]

sha.dsds[mdi][lev1.5][fd_Vc_01h]

MDI Product Codes of Contributing Level 0 Data

42420f00

42480f00

42480fc0

Keywords

Prime key(s):

T_REC (time) : 53632/53632 valid (53632 distinct):
    range: 1996.07.26_16:25:00_TAI – 2007.03.28_17:49:30_TAI

Variable key(s):

cparms_sg000 (string) : all 53632 default: = 'compress Rice'
data_bzero (double) : all 53632 default: = 0 (0)
data_bscale (double) : all 53632 default: = 1 (1)
T_OBS (time) : 53632/53632 valid (53632 distinct):
    range: 1996.07.26_16:25:00_TAI – 2007.03.28_17:49:30_TAI
DATE__OBS (time) : 53632/53632 valid (53632 distinct):
    range: 1996-07-26T16:24:15Z – 2007-03-28T17:48:42Z
CDELT1 (float) : 53632/53632 valid (270 distinct):
    range: 1.977345 – 1.985763
CDELT2 (float) : 53632/53632 valid (270 distinct):
    range: 1.977345 – 1.985763
CRPIX1 (float) : 53632/53632 valid (6046 distinct):
    range: 512.086 – 513.353
CRPIX2 (float) : 53632/53632 valid (4984 distinct):
    range: 511.662 – 513.404
CROTA2 (float) : 53632/53632 valid (3 distinct):
    0.0
    180.0
    -9.8
CAR_ROT (int) : 53632/53632 valid (11 distinct):
    range: 1912 – 2054
CRLN_OBS (float) : 53632/53632 valid (53561 distinct):
    range: 11.672 – 350.720
CRLT_OBS (float) : 53632/53632 valid (53632 distinct):
    range: -7.0087 – 7.2894
DSUN_OBS (double) : 53632/53632 valid (53632 distinct):
    range: 145559596635.56 – 150523469747.37
OBS_VR (double) : 53632/53632 valid (53632 distinct):
    range: -573.993722 – 582.069483
OBS_VW (double) : 53632/53632 valid (53632 distinct):
    range: 28860.040140 – 29954.814675
OBS_VN (double) : 53632/53632 valid (53632 distinct):
    range: -3778.607003 – 3627.755847
RSUN_OBS (double) : 53632/53632 valid (53632 distinct):
    range: 953.743738 – 986.268549
R_SUN (float) : 53632/53632 valid (31182 distinct):
    range: 480.956 – 498.780
X0 (float) : 53632/53632 valid (10077 distinct):
    range: 511.086 – 512.353
Y0 (float) : 53632/53632 valid (6649 distinct):
    range: 510.662 – 512.404
EARTH_DT (float) : 53632/53632 valid (50842 distinct):
    range: 4.228536 – 5.481368
DATAVALS (int) : 53632/53632 valid (648 distinct):
    range: 0 – 798020
MISSVALS (int) : 53632/53632 valid (647 distinct):
    range: 0 – 723816
DATAMIN (float) : 53632/53632 valid (3295 distinct):
    range: -12193.0 – 921.0
DATAMAX (float) : 53632/53632 valid (3204 distinct):
    range: 0.0 – 32675.0
DATAMEDN (float) : 53632/53632 valid (50501 distinct):
    range: -3974.901 – 5639.993
DATAMEAN (float) : 53632/53632 valid (53368 distinct):
    range: -4220.760 – 6181.900
DATARMS (float) : 53632/53632 valid (45585 distinct):
    range: 0.000000 – 4258.562990
DATASKEW (float) : 53632/53632 valid (52824 distinct):
    range: -1.558 – 3.708
DATAKURT (float) : 53632/53632 valid (50967 distinct):
    range: -1.889 – 60.304
CROP_RAD (float) : 53632/53632 valid (2 distinct):
    480.0
    504.0
INTERVAL (float) : 53632/53632 valid (1 distinct):
    30.00
DPC (int) : 53632/53632 valid (3 distinct):
    0x42480f00
    0x42420f00
    0x42480fc0
DATE (time) : 53632/53632 valid (53632 distinct):
    range: 2016-03-02T19:39Z – 2016-03-02T21:49Z
RUNTIME (time) : 53632/53632 valid (479 distinct):
    range: 1998.10.29_08:17_UTC – 2007.04.05_21:34_UTC
SOURCE (string) : 53632/53632 valid (53632 distinct):
    range: prog:mdi,level:lev1[1],series:42420f00_01h[118940],sel:[0] – prog:mdi,level:lev1[9],series:42480f00_01h[34753],sel:[9]
BLDVER15 (string) : 53632/53632 valid (8 distinct):
    range: 40001 – 50900
CALTBLS (string) : 53632/53632 valid (3 distinct):
    mdi.caltables_doppler[fd_tune_2]
    mdi.caltables_doppler[fd_tune_6]
    mdi.caltables_doppler[fd_tune_5]
TBLXYUPD (time) : 53632/53632 valid (14 distinct):
    range: 1998.07.27_18:21:17_UTC – 2007.04.05_20:33:51_UTC
XY_FROM (string) : 53632/53632 valid (1 distinct):
    SMOOTH
XY_QUAL (int) : 53632/53632 valid (1 distinct):
    0
POLSTATE (string) : all 53632 default: = 'LP'
HISTORY (string) : all 53632 default: = ''
BLD_VERS (string) : 53632/53632 valid (1 distinct):
    V8R10X
QUALITY (int) : 53632/53632 valid (20 distinct):
    range: 0x00000000 – 0x0000029d

Constant key(s):

CRVAL1 (float) : 0.000
CRVAL2 (float) : 0.000
CTYPE1 (string) : HPLN-TAN
CTYPE2 (string) : HPLT-TAN
CUNIT1 (string) : arcsec
CUNIT2 (string) : arcsec
WCSAXES (int) : 2
WCSNAME (string) : Helioprojective-cartesian
BUNIT (string) : m/s
CADENCE (float) : 30.0
CAMERA (string) : MDI
TELESCOP (string) : SOHO
WAVELNTH (int) : 6768
ORIGIN (string) : SOI Science Support Center
ROLL_TBL (string) : mdi.roll_table
RSUN_REF (double) : 696000000
T_REC_epoch (time) : 1977.01.01_00:33:12_TAI
T_REC_step (float) : 30.0
CONTENT (string) : MDI full-disc Dopplergram
COMMENT (string) : Data from the Solar Oscillations Investigation / Michelson Doppler Imager (SOI/MDI) on the Solar and Heliospheric Observatory (SOHO)

Special Notes

Records for 2007.03.22 16:39:00–16:59:00 were erroneously incorporated in this series; they are 30-second exposure Dopplergrams, but taken only on a 60-second cadence..

this page last modified 15 Mar 2016, 13:44-0700