In June, 2015, the Yohkoh Legacy data Archive(YLA) completed the Resident Archive(RA) contract with NASA. Our RA services span 6 years supported by 3 separate RA grants. We express our sincere appreciation to NASA for this long-term support. Although we had reported about our activities every year at the time of closing out each grant, we thought it is worth noting our whole achievements in a single document. We are proud of all of these, and reassure that they were not made possible without the long-term support. Best regards, Aki Takeda on behalf of the YLA team, at Montana State University. *********************************************************************** The Resident Archive (RA) grants we have been supported from NASA's Heliophysics Data Environment Enhancement program: - NNX09AH64G 2009/04/07 - 2011/04/06 (with 1-year no-cost extension), - NNX12AG78G 2012/04/01 - 2014/03/31, - NNX14AK35G 2014/06/11 - 2015/06/10. The YLA team (initial members): Aki Takeda, Loren Acton, Keiji Yoshimura, David McKenzie (Montana State Univ.) and Samuel Freeland (Lockheed Martin Solar Astrophysics Lab.) Our main achievements : ------------------------------------------------- (a) Creation and maintenance of the YLA web site. ------------------------------------------------- The YLA web site, http://solar.physics.montana.edu/ylegacy/ opened since October 2008, as the prime archive of Yohkoh CALIBRATED data products. The main contents are : - SXT basic data products(raw to highly calibrated level), - Flare catalogs (HXT/WBS and BCS), - SXT daily quick look, - SXT synoptic map archive, - Rich amount of documentation(operation reports, analysis manuals, etc.), - Interactive web services (data search, SXT customized movie maker). Since November 2010, the site was moved to a new server (purchased via NNX09AH64G), operated exclusively for the YLA project. The YLA web site keeps collecting 300-400 unique visitors every month in 2015 (see Appendix 1). In 2015, the redacted version of the YLA was prepared and transferred to the SDAC to serve as the "Final Archive", abide by the current NASA Heliophysics Science Data Management Policy. Interactive web services and miscellaneous data (image galleries, etc.) are dropped in the redacted version in order to minimize the maintenance work at the SDAC. The URL of the redacted YLA is as follows. http://umbra.nascom.nasa.gov/yohkoh/ The YLA original site at Montana State University continues to provide data services as long as the resource is available. However, the priority of the maintenance work (e.g., software/database update and user support) will be lowered. --------------------------------------------------- (b) Individual user support (E-consultant service). --------------------------------------------------- During the period of 2009-2015, we received more than 40 consultations from researchers and publishers inside/outside the US (see Appendix 2). ------------------------------------------------- (c) Data, database and software improvement : ------------------------------------------------- (c-1) SXT attitude database (ATT files) correction. - ATT files version 9 (2001.12) upgraded to version 23 (2013.6) - refer Acton (2015, Solar Physics) for details. (c-2) SXT Stray light correction. - by use of terminator images or synthesized stray light images. - refer Acton (2015, Solar Physics) for details. (c-3) Re-calibration of the offset of X-ray and Optical images. - (EW,SW)=(-0.36,1.47) (as of 1992) updated to (-0.90,1.36) in 2008. (c-4) Creation of SXT calibrated data. - level_1 : full- and partial-sun images with basic correction. - level_2 : scientific composite full-sun images. - level_3 : co-aligned & byte-scaled composite full-sun images. (c-5) SXT FITS and JPEG file creation. - level_0(raw data) : only in the Yohkoh specific format(XDA). - level_1 : XDA and FITS. - level_2 : XDA and FITS. - level_3 : FITS and JPEG. (c-6) Recalculation of SXT response functions. - from original response function based on Mewe et. al (1985,1986) to CHIANTI version 6.01 in October, 2010 - to CHIANTI ver. 7,13 in April, 2014. - to CHIANTI ver. 7,14 in February, 2015. (c-7) SXT software upgrade. - utility(information) functions to accommodate FITS file headers. - temperature & emission measure procedures to work with the new response functions. - reflect updated offset values of X-ray and Optical images. - update CCD gain default value (100 to 90 in 2015). ------------------------------------------------- (d) Catalog preparation/archiving : ------------------------------------------------- (d-1) HXT-WBS flare catalog (contribution from JAXA/ISAS). - 3112 flares observed with HXT, WBS/SXS, WBS/HXS, and SXT. - 33 gamma-ray flares observed with WBS/GRS. (d-2) BCS flare catalog (contribution from MSSL). - 1602 flares observed with BCS, larger than GOES B5.0. (d-3) SXT sigmoid catalog (contribution from MSU). - 107 sigmoids observed with SXT (based on Canfield et.al, 2007) (d-4) Creation of SXT synoptic image archive. - Central meridian intensity temporal stack plot for the Carrington rotation No.1847 through 1984. ------------------------------------------------- (e) Documents archiving : ------------------------------------------------- (e-1) Operation reports archiving: - Sagamihara(SSOC) toban reports, - Kagoshima(KSC) toban reports, - SXT Chief Observer reports, - toban manuals and CO handbook, - SXT status report, - SXT progress reports, - SXT campaign catalog, - Yohkoh Science Nuggets, etc. (e-2) Calibration documents digitization and archiving: - SXT Experiment Interface Control Agreement(EICA), - SXT Calibration Notes, - Yohkoh File Format Control Document (FCD), etc. (e-3) Yohkoh Analysis Guide update and HTMLise. - Instrumental Guide, - User's Guide, - Reference Guide. (e-4) YLA documents and papers: - YLA Summary of Research reports, - YLA web access statistics, - SXT New response functions, - SXT Observation Notes, - Major Operational Events. ----------------------------------------------------------- (f) Collaboration with external data/information services. ----------------------------------------------------------- (f-1) Virtual Solar Observatory (VSO). - SXT level_1 to 3 products made accessible since 2009 from the VSO general search. http://vso.nascom.nasa.gov/cgi-bin/search - Special search page for YLA products with search options by data level, filter pair and spatial resolution started to develop in 2012. http://sao.virtualsolar.org/YLA (under construction) (f-2) Data Archives and Transmission System (DARTS). - The YLA basic products (level_1 to 3) were transferred to Japanese space mission data center, DARTS at JAXA/ISAS in 2011. (f-3) Helioviewer project. - The SXT level_3 images converted to Jpeg2000 by YLA were successfully adapted to the Helioviewer system and available since February 2013. http://www.helioviewer.org/ (f-4) Heliophysics Events Knowledgebase (HEK) - The Yohkoh flare and gamma-ray events included in our three flare catalogs (Yohkoh/HXT/SXT/WBS, Yohkoh/WBS/GRS, Yohkoh/BCS) were injected and made available from the HEK system in May 2015. Good examples are found in the search results of 1991/12/15 flare events from the HEK page: http://www.lmsal.com/hek/index.html (f-5) SolarMonitor. - The daily SXT full-sun images (level_3) and their cutout for active region were made available from SolarMonitor historical pages from 1996 (start of the SOHO mission) to 2001 (end of the Yohkoh mission). An example page is found at: http://www.solarmonitor.org/index.php?date=20000608®ion=&indexnum=1 http://www.solarmonitor.org/index.php?date=20000608®ion=09026 (f-6) Solar Data Analysis Center (SDAC). - The YLA basic products (level_1 to 3) were transferred in March 2014. - The redacted version of the YLA was prepared by YLA and transferred and adapted to the SDAC system in June 2015. http://umbra.nascom.nasa.gov/yohkoh/ (cf. section (a) for more info.) ------------------------------------------------- (g) Public outreach : ------------------------------------------------- Since 2009, we participated in a local educational event for middle school female students, "Expand Your Horizon" held yearly at Montana State University. We provided Yohkoh full-sun images observed on their birthday for each of more than 200 participants. We continued this activity until 2012, until Yohkoh mission became unable to cover the range of middle school students birth dates. ------------------------------------------------- (h) Publication : ------------------------------------------------- (h-1) YLA RA Services (Takeda et.al, 2009, Data Sci. J. vol.8 p.JGY1). (h-2) SXT new response functions (Takeda, 2011, SolPhys 273 p.295) (h-3) SXT on-orbit performance & calibration (Acton,2015,SolPhys,accepted.) Separately from the above project papers, more than 50 papers were published using mainly/partially Yohkoh products during the period, 2009-2015, as summarized at the page by Dr. Marcus Aschwanden at LMSAL. http://www.lmsal.com/~aschwand/publications/yohkoh.html ****************** Acknowledgment: ****************** Jun Sato and the former Yohkoh/HXT and WBS teams for the creation of the HXT/WBS/SXT flare catalog. Paul Kuin and and former Yohkoh/BCS team for the creation of the BCS flare catalog. Alisdiar Davy and the VSO team for the adaptation of YLA/SXT FITS products to the VSO and the creation of special search page for SXT data. Jack Ireland and the Helioviewer team for the adaptation of YLA/SXT level3 data to the Helioviewer. Ryan Timmons and the HEK team for the inclusion of the Yohkoh flare catalogs. David Perez-Suarez and the SolarMonitor team for the adaptation of the SXT level_3 data to its historical page (1996-2001). Joseph Hourcle and the SDAC for the adaptation of the YLA SXT basic products and the redacted YLA. == Appendix 1 == Variation of monthly total of daily unique users (1-Jan-2009 through 31-May-2015). Note that the following types of access are REMOVED from the numbers listed below: * accesses from inside MSU domain. * accesses by several major search engine robots. [In addition to these since 2012] * accesses only to the YLA top page. * accesses without any proper referrer. * direct accesses from result pages of major search engines. ====================================================================== Jan. Feb. Mar. Apr. May Jun. Jul. Aug. Sep. Oct. Nov. Dec. ====================================================================== [2009] 360, 531, 598, 510, 405, 338, 387, 477, 617, 615, 292, 285 ---------------------------------------------------------------------- [2010] 320, 295, 393, 494, 359, 292, 405, 445, 377, 416, 617, 534 ---------------------------------------------------------------------- [2011] 716, 567, 532, 508, 503, 625, 358, 370, 490, 428, 588, 930 ---------------------------------------------------------------------- [2012] 686, 686, 808, 643, 690, 561, [2012 newly introduced counting method] 300, 317, 376, 300, 340, 283, 266, 370, 287, 336, 349, 290 ---------------------------------------------------------------------- [2013] 341, 346, 355, 454, 367, 378 350, 361, 284, 342, 292, 235 ---------------------------------------------------------------------- [2014] 257, 259, 388, 352, 427, 401, 360, 378, 348, 416, 305, 396 ---------------------------------------------------------------------- [2015] 512, 375, 302, 355, 316 ---------------------------------------------------------------------- == Appendix 2. == E-consultant services we received. Only dates, the institutes of the researchers, and the type of consultation are shown. In the third column, I: inquiry, D : data request, A: analysis support. ---------------------------------------------------------------------- 29-Oct-2008 & California State University, Northridge & D, A 03-Mar-2009 & California State University, Northridge & D, A 09-Apr-2009 & Predictive Science Inc., California & I 23-Apr-2009 & Swedish Institute of Space Physics & I 04-May-2009 & Wright State University, Ohio & D, A 04-May-2009 & Geomagnetic Laboratory, Natural Resources Canada & D 18-Jun-2009 & PPN PG College, Kanpur, India & I 06-Jul-2009 & Alabama Agr. and Mech. University & I 08-Jul-2009 & University of Potsdam, Germany & A 13-Jul-2009 & Wright State University, Ohio & D, A 17-Jul-2009 & Universidad Tecnologica Naciona, Argentina & I 14-Sep-2009 & Harvard-Smithsonian, Center for Astrophysics, MA & I 04-Dec-2009 & University of California, Berkley & A 16-Feb-2010 & Lockheed Martin Solar and Astrophyscal Lab. & I 08-Mar-2010 & Montana State University & I, A 03-May-2010 & Lockheed Martin Solar and Astrophyscal Lab. & I 18-May-2010 & Montana State University & I 06-Aug-2010 & Montana State University & I, A 16-Sep-2010 & Universidad Tecnologica Naciona, Argentina & I 24-Sep-2010 & Montana State University & I 23-Dec-2010 & personal business (domestic) & I 28-Feb-2011 & University of California, Los Angels & D, A 01-Mar-2011 & Wroclaw University, Poland & I 28-Jul-2011 & University of California, Berkeley & D, A 12-Oct-2011 & Pioneer TV, UK & D 02-Dec-2011 & Montana State University & A 07-Dec-2011 & Oxford Centre for Collaborative Applied Math. UK & I 12-May-2012 & University of St. Andrews, UK. & I 29-May-2012 & Thames & Hudson publisher. & I 29-May-2012 & National Astronomical Observatory, Japan. & D 25-Jun-2012 & Smithsonian Astrophysical Observatory. & I 12-Jul-2012 & Cambridge University Press, UK. & I 04-Sep-2012 & High Altitude Observatory. & D 15-Oct-2012 & Helsinki Observatory, Finland. & I 17-Oct-2012 & Natural Resources Canada. & I 06-Jun-2013 & Japan Aerospace Exploration Agency. & I 20-Apr-2013 & Wroclaw University, Poland. & A 01-Aug-2013 & Japan Aerospace Exploration Agency. & I 06-Aug-2013 & Technische Universitat Muenchen, Germany & I 10-Feb-2014 & Harvard-Smithsonian Center for Astrophysics. & A 25-Jun-2014 & Indian Institute of Technology, India. & I 20-Feb-2015 & private company, US domestic & I --------------------------------------------------------------------- === end of report ===