Abstract
Abstract We present a new data product, called Space-Weather MDI Active Region Patches (SMARPs), derived from maps of the solar surface magnetic field taken by the Michelson Doppler Imager on board the Solar and Heliospheric Observatory. Together with the Space-Weather HMI Active Region Patches (SHARPs), derived from similar maps taken by the Helioseismic and Magnetic Imager on board the Solar Dynamics Observatory, these data provide a continuous and seamless set of maps and keywords that describe every active region observed over the last two solar cycles, from 1996 to the present day. In this paper, we describe the SMARP data and compare it to the SHARP data.
Highlights
We present a new data product, called Space-Weather MDI Active Region Patches (SMARPs), derived from maps of the solar surface magnetic field taken by the Michelson Doppler Imager (MDI) aboard the Solar and Heliospheric Observatory (SoHO)
We designed the SMARP data for use in concert with another data product called the Space-Weather HMI Active Region Patches (SHARPs, Bobra et al 2014), derived from photospheric magnetic field data taken by the Helioseismic and Magnetic Imager (HMI, Schou et al 2012) aboard the Solar Dynamics Observatory (SDO)
This paper describes the SMARP data set, which, together with the SHARP data, provide a continuous, seamless set of active region data from Cycle 23 and 24
Summary
We present a new data product, called Space-Weather MDI Active Region Patches (SMARPs), derived from maps of the solar surface magnetic field taken by the Michelson Doppler Imager (MDI, Scherrer et al 1995) aboard the Solar and Heliospheric Observatory (SoHO). These data include maps that track every solar active region observed by MDI, along with keywords that describe the physical characteristics of each active region, from 1996 to 2010. We provide example code that demonstrates how to use the SMARP and SHARP data together (see Table 1)
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