Using the GDC for SDO

gdcimage

Key datasets

HMI (preliminary) data series

The 5 primary HMI observables reside under the "hmi_test" namespace. We also plan to get the vector magnetic data series once it is available.

Important: the Ic_45s, M_45s, Lw_45s, and Ld_45s are currently being re-ingested. It is about half complete so there are already many segments (i.e. images) available. It is estimated to take until Friday 9th August 2010 to complete. Then by the following week we will be up-to-date with JSOC once again.

Series name
Description
Cadence
Size
Segment name or #
hmi_test.V_45s Dopplergram
45s
14.323 MB Dopplergram
hmi_test.Ic_45s Continuum Intensity
45s
16.578 MB continuum
hmi_test.M_45s los Magnetogram
45s
19.163 MB magnetogram
hmi_test.Lw_45s Line Width
45s
16.177 MB linewidth
hmi_test.Ld_45s Line Depth
45s
16.677 MB linedepth
su_keiji.vmagf_2d_720s Vector Magnetic Field
720s
1.38 GB 22 segments (not yet available)

 

AIA (preliminary) data series

The primary AIA observables for all wavelengths all reside in the single DRMS series

    aia_test.lev1

1 week block at full cadence spans the time frame

    2010-06-09T13:00:00.58Z-2010-06-16T13:39:59.07Z

12 minute cadence begins at

   2010-06-16T13:40:00.57Z

To search for a single wavelength, one must use the e.g. [?WAVELNTH=171?] option with the DRMS utility command "show_info". Below is a table of the available wavelengths and typical cadences, sizes and number of segments. For each wavelength the main segment (i.e. FITS image) is named "image_lev.fits".

Series query
Wavelength (A)
Cadence
Size
# Segments
aia_test.lev1[?WAVELNTH=94?]
94
12s
7.4 MB 3
aia_test.lev1[?WAVELNTH=131?]
131
12s
8.53 MB 3
aia_test.lev1[?WAVELNTH=171?]
171
12s
11.93 MB 3
aia_test.lev1[?WAVELNTH=193?]
193
12s
11.46 MB 3
aia_test.lev1[?WAVELNTH=211?]
211
12s
9.78 MB 3
aia_test.lev1[?WAVELNTH=304?]
304
12s
9.83 MB 3
aia_test.lev1[?WAVELNTH=335?]
335
12s
7.41 MB 3
aia_test.lev1[?WAVELNTH=1600?]
1600
24s
10.22 MB 2
aia_test.lev1[?WAVELNTH=1700?]
1700
24s
12.17 MB 2
aia_test.lev1[?WAVELNTH=4500?]
4500
2880s
13.49 MB 2

 

Mapping and Tracking Workflow data series

The mapping and tracking workflow generates data cubes that are mapped (postel projected) and tracked at some specified rate. The current relevant/useful series are below

Series name
Description
Duration
mps_schunker.V2_mag1_512x512x1919 HMI Mapped and Tracked (MT) Dopplergrams
24h
mps_seismo.MT_512x512x1919 HMI MT continuum
24h
mps_schunker.V_test HMI MT Dopplergrams
24h
mps_schunker.M_test HMI MT los Magnetograms
24h
mps_schunker.Ic_test HMI MT Continuum
24h
mps_schunker.V_mdires_test 2 MT cubes of HMI Dopplergrams at MDI resolution
24h
mps_schunker.Ic_mdires_test 2 MT cubes of HMI continuum at MDI resolution
24h
mps_schunker.M_mdires_test 2 MT cubes of HMI los magnetograms at MDI resolution
24h
mps_schunker.hmi_test_V_45s HMI Dopplergrams earlier release: 2x24hr continuous coverage sel.
mps_schunker.hmi_test_Ic_45s HMI Continuum: 2x24hr continuous coverage selections
mps_schunker.hmi_test_M_45s HMI los Magnetograms: 2x 24hr continuous coverage selections
mps_schunker.V_sunspot MT cube of HMI los velocity - AR11057 29.03.2010
6.88 h
mps_schunker.M_sunspot MT cube of HMI los magnetic field - AR11057 29.03.2010
6.88 h
mps_schunker.Ic_sunspot MT cube of HMI intensity continuum - AR11057 29.03.2010
6.88 h

 

The last 3 series contain 2x24h blocks of full coverage (i.e. no missing frames). The magnetograms/continuum are copies of hmi_test.M_45s and hmi_test.Ic_45s. However, the doppler is an earlier test release. The selections cover 10.04.2010 and 25.04.2010. Note that mps_schunker.V_test was generated from mps_schunker.hmi_test_V_45s, and similarly for Ic and M (and same for mdires stuff)

The above co-temporal data sets are also available from the HELAS local helioseismology web site here.

SOHO-MDI data series

There is also a SOHO-MDI data series

    mps_mdi.fd_V_01h_lev1_8: MDI level1.8 Dopplergrams

 

 

Navigation

Home

Key datasets

Accessing data

Header keywords

Running the Track'n'Map pipeline

Updates

 

Links:
GDC/SDO
JSOC wiki
HMI release notes
SDO/HMI webpage
HELAS local helioseismology

 

web-master: schunker [at] mps.mpg.de