hmi mdi comparison y. liu. cr 2104 cr 2109 mdi = 1.2 * hmi 720s / 45s
Post on 21-Dec-2015
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![Page 1: HMI MDI Comparison Y. Liu. CR 2104 CR 2109 MDI = 1.2 * HMI 720s / 45s](https://reader036.vdocuments.net/reader036/viewer/2022062516/56649d625503460f94a450f3/html5/thumbnails/1.jpg)
HMI MDI Comparison
Y. Liu
![Page 2: HMI MDI Comparison Y. Liu. CR 2104 CR 2109 MDI = 1.2 * HMI 720s / 45s](https://reader036.vdocuments.net/reader036/viewer/2022062516/56649d625503460f94a450f3/html5/thumbnails/2.jpg)
CR 2104
![Page 3: HMI MDI Comparison Y. Liu. CR 2104 CR 2109 MDI = 1.2 * HMI 720s / 45s](https://reader036.vdocuments.net/reader036/viewer/2022062516/56649d625503460f94a450f3/html5/thumbnails/3.jpg)
CR 2109
![Page 4: HMI MDI Comparison Y. Liu. CR 2104 CR 2109 MDI = 1.2 * HMI 720s / 45s](https://reader036.vdocuments.net/reader036/viewer/2022062516/56649d625503460f94a450f3/html5/thumbnails/4.jpg)
MDI = 1.2 * HMI 720s / 45s
![Page 5: HMI MDI Comparison Y. Liu. CR 2104 CR 2109 MDI = 1.2 * HMI 720s / 45s](https://reader036.vdocuments.net/reader036/viewer/2022062516/56649d625503460f94a450f3/html5/thumbnails/5.jpg)
Mean Field
![Page 6: HMI MDI Comparison Y. Liu. CR 2104 CR 2109 MDI = 1.2 * HMI 720s / 45s](https://reader036.vdocuments.net/reader036/viewer/2022062516/56649d625503460f94a450f3/html5/thumbnails/6.jpg)
HMI Magnetic Field Noise Pattern
• Gaussian with of 10000 magnetograms
![Page 7: HMI MDI Comparison Y. Liu. CR 2104 CR 2109 MDI = 1.2 * HMI 720s / 45s](https://reader036.vdocuments.net/reader036/viewer/2022062516/56649d625503460f94a450f3/html5/thumbnails/7.jpg)
MDI Magnetic Field Noise Pattern
• MDI has pronounced spatial noise pattern
![Page 8: HMI MDI Comparison Y. Liu. CR 2104 CR 2109 MDI = 1.2 * HMI 720s / 45s](https://reader036.vdocuments.net/reader036/viewer/2022062516/56649d625503460f94a450f3/html5/thumbnails/8.jpg)
HMI & MDI Doppler/Magnetic Leakage
![Page 9: HMI MDI Comparison Y. Liu. CR 2104 CR 2109 MDI = 1.2 * HMI 720s / 45s](https://reader036.vdocuments.net/reader036/viewer/2022062516/56649d625503460f94a450f3/html5/thumbnails/9.jpg)
Synoptic HMI/MDI Noise Comparisonvs Longitude
![Page 10: HMI MDI Comparison Y. Liu. CR 2104 CR 2109 MDI = 1.2 * HMI 720s / 45s](https://reader036.vdocuments.net/reader036/viewer/2022062516/56649d625503460f94a450f3/html5/thumbnails/10.jpg)
• Average line-of-sight magnetic field versus sine latitude observed in HMI synoptic map
![Page 11: HMI MDI Comparison Y. Liu. CR 2104 CR 2109 MDI = 1.2 * HMI 720s / 45s](https://reader036.vdocuments.net/reader036/viewer/2022062516/56649d625503460f94a450f3/html5/thumbnails/11.jpg)
Synoptic / Synchronic
• Features are stretched far from reference
![Page 12: HMI MDI Comparison Y. Liu. CR 2104 CR 2109 MDI = 1.2 * HMI 720s / 45s](https://reader036.vdocuments.net/reader036/viewer/2022062516/56649d625503460f94a450f3/html5/thumbnails/12.jpg)
Time-of-Day Variation - 01 UT and 13 UT