• TimeAverage_IQUV

HMI Pipeline Module - TimeAverage_IQUV

For a given time and duration this pipeline module locates the corrected level 1 HMI filtergrams needed to compute I, Q, U, and V. The filtergrams are interpolated to the proper time, remapped to the correct disk coordinates, and averaged to determine I,Q,U,& V. The output is a DRMS dataset containing the appropriately time-averaged quantities corrected for solar rotation and other known instrumental effects.

Module Inputs

• Input is the set of corrected level 1.0 HMI filtergrams needed to compute I, Q, U, and V for a specified time period.

Module Outputs

• The output is a DRMS dataset containing the appropriately time-averaged quantities I, Q, U,and V, corrected for solar rotation and other known instrumental effects.

Cadence

• Nominally 12 minute averages of I,Q,U, and V will be produced.
• Effectively 8 90-second input records will be averaged, but actually more will contribute with appropriate weighting to reduce aliasing.

Options

• Anti-aliasing option
• Time and duration of averaging

Archive

• I,Q,U, and V are not archived.

Overall Status of Module

• 75% complete

Status of Code

• 85%
• Code has been run on HMI test data

Status of DRMS module

• 50%

Issues needing resolution

• Type of temporal anti-alias temporal filtering

Responsible scientist

• Jesper Schou

Remarks

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