edu.ucar.opensky::articles:14017 UCAR/NCAR - Library OpenSky Support PO Box 3000 Boulder CO 80307-3000 opensky@ucar.edu http://opensky.ucar.edu/ homepage pointOfContact 2025-12-26T03:26:45.122907 ISO 19115-2 Geographic Information - Metadata - Part 2: Extensions for Imagery and Gridded Data ISO 19115-2:2009(E) https://n2t.org/ark:/85065/d7x92c8h The Interface Region Imaging Spectrograph (IRIS) 2014-07-01T00:00:00Z publication https://n2t.org/ark:/85065/d7x92c8h https://doi.org/10.1007/s11207-014-0485-y De Pontieu, B. author Title, A. author Lemen, J. author Kushner, G. author Akin, D. author Allard, B. author Berger, T. author Boerner, P. author Cheung, M. author Chou, C. author Drake, J. author Duncan, D. author Freeland, S. author Heyman, G. author Hoffman, C. author Hurlburt, N. author Lindgren, R. author Mathur, D. author Rehse, R. author Sabolish, D. author Seguin, R. author Schrijver, C. author Tarbell, T. author Wulser, J. author Wolfson, C. author Yanari, C. author Mudge, J. author Nguyen-Phuc, N. author Timmons, R. author van Bezooijen, R. author Weingrod, I. author Brookner, R. author Butcher, G. author Dougherty, B. author Eder, J. author Knagenhjelm, V. author Larsen, S. author Mansir, D. author Phan, L. author Boyle, P. author Cheimets, P. author DeLuca, E. author Golub, L. author Gates, R. author Hertz, E. author McKillop, S. author Park, S. author Perry, T. author Podgorski, W. author Reeves, K. author Saar, S. author Testa, P. author Tian, H. author Weber, M. author Dunn, C. author Eccles, S. author Jaeggli, S. author Kankelborg, C. author Mashburn, K. author Pust, N. author Springer, L. author Carvalho, R. author Kleint, L. author Marmie, J. author Mazmanian, E. author Pereira, T. author Sawyer, S. author Strong, J. author Worden, S. author Carlsson, M. author Hansteen, V. author Leenaarts, J. author Wiesmann, M. author Aloise, J. author Chu, K. author Bush, R. author Scherrer, P. author Brekke, P. author Martinez-Sykora, J. author Lites, Bruce W. author McIntosh, Scott author Uitenbroek, H. author Okamoto, T. author Gummin, M. author Auker, G. author Jerram, P. author Pool, P. author Waltham, N. author UCAR/NCAR - Library publisher The Interface Region Imaging Spectrograph (IRIS) small explorer spacecraft provides simultaneous spectra and images of the photosphere, chromosphere, transition region, and corona with 0.33 - 0.4 arcsec spatial resolution, two-second temporal resolution, and 1 km s−1 velocity resolution over a field-of-view of up to 175 arcsec × 175 arcsec. IRIS was launched into a Sun-synchronous orbit on 27 June 2013 using a Pegasus-XL rocket and consists of a 19-cm UV telescope that feeds a slit-based dual-bandpass imaging spectrograph. IRIS obtains spectra in passbands from 1332 - 1358 Å, 1389 - 1407 Å, and 2783 - 2834 Å, including bright spectral lines formed in the chromosphere (Mg ii h 2803 Å and Mg ii k 2796 Å) and transition region (C ii 1334/1335 Å and Si iv 1394/1403 Å). Slit-jaw images in four different passbands (C ii 1330, Si iv 1400, Mg ii k 2796, and Mg ii wing 2830 Å) can be taken simultaneously with spectral rasters that sample regions up to 130 arcsec × 175 arcsec at a variety of spatial samplings (from 0.33 arcsec and up). IRIS is sensitive to emission from plasma at temperatures between 5000 K and 10 MK and will advance our understanding of the flow of mass and energy through an interface region, formed by the chromosphere and transition region, between the photosphere and corona. This highly structured and dynamic region not only acts as the conduit of all mass and energy feeding into the corona and solar wind, it also requires an order of magnitude more energy to heat than the corona and solar wind combined. The IRIS investigation includes a strong numerical modeling component based on advanced radiative–MHD codes to facilitate interpretation of observations of this complex region. Approximately eight Gbytes of data (after compression) are acquired by IRIS each day and made available for unrestricted use within a few days of the observation. UCAR/NCAR - Library OpenSky Support PO Box 3000 Boulder CO 80307-3000 opensky@ucar.edu http://opensky.ucar.edu/ homepage pointOfContact PDF Text theme Resource Type 2016-01-01T00:00:00Z publication Copyrigiht 2014 The Author(s) None eng geoscientificInformation