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#	Item
631	A newly-defined geomagnetic activity index, the Inter-Hourly Variability Index (IHV), has been found to have a very high correlation (R=0.93 for monthly means) with the NOAA/POES Hemispheric Power Index (Hp) that provide Add to Reading List Source URL: www.leif.org Language: English - Date: 2010-03-12 17:08:29 NOAA-18 Polar Operational Environmental Satellites NOAA-15 National Oceanic and Atmospheric Administration Weather satellites Spaceflight Television Infrared Observation Satellite
632	my journal manuscript No. (will be inserted by the editor) Solar Sector Structure Hugh Hudson · Leif Svalgaard · Iain Hannah Add to Reading List Source URL: www.leif.org. Language: English Astrophysics Astronomy Sun Light sources Jets Solar cycle Solar wind Heliosphere Corona Space plasmas Physics Plasma physics
633	Ventilation volume and PIAF when wearing Negative and Positive Pressure Respirators Göran Berndtsson, CEO, The SEA Group Leif Ekman, Technical Consultant Sarah Jessup, B.E. (Aeronautical) (Hons) Introduction Add to Reading List Source URL: www.sea.com.au Language: English - Date: 2008-11-27 03:50:38 Respiration Respiratory physiology Filters Masks Protective gear Respirator Water Breathing Flow measurement Medicine Biology Zoology
634	The Scale Value of the H variometer at Helsinki Leif Svalgaard, September 2013 The diurnal variation [SR or less accurately called Sq] of geomagnetic elements can be used to check the scale-value of the magnetometers. Th Add to Reading List Source URL: www.leif.org. Language: English - Date: 2013-10-05 23:52:01 Geophysics Celestial mechanics Geomagnetism Atmosphere Sunspot Vortices Solar cycle Wolf number Ionosphere Physics Astronomy Electromagnetism
635	c ESO 2011 Astronomy & Astrophysics manuscript no. paper˙set2˙rb June 20, 2011 Add to Reading List Source URL: www.leif.org. Language: English - Date: 2011-06-21 18:14:28 Sun Physics Plasma physics Space plasmas Solar rotation Celestial mechanics Sunspot Differential rotation Solar cycle Astronomy Space Light sources
636	The intrinsic error is the variation of H has varied with time Add to Reading List Source URL: www.leif.org. Language: English - Date: 2013-10-17 12:32:24 Earth sciences graphics software IDV Standard deviation Standard error Average Curve Statistics Summary statistics 3D graphics software
637	The tally of splotches on our sun tells us what it’s up to. It’s a pity no one can agree how to count them, says Brian Owens Spot of bother Add to Reading List Source URL: www.leif.org. Language: English - Date: 2013-09-16 23:20:58 Vortices Maunder Minimum Space Wolf number Solar cycle Sun Rudolf Wolf Solar variation Solar minimum Astronomy Physics Sunspot
638	4. Biases in the Zürich era: causes and diagnostics 4.1 The ~1885 Rz-Rg divergence[removed]A powerful way of comparing two time series is to form the ratio between them, avoiding Add to Reading List Source URL: www.leif.org. Language: English - Date: 2014-04-09 00:24:55 Vortices Wolf number Solar cycle Rudolf Wolf Sun Internet backbone Space Astronomy Physics Sunspot
639	How Well Do We Know the Sunspot Number? [And what we are doing to answer that question] Leif Svalgaard & Ed W. Cliver Add to Reading List Source URL: www.leif.org. Language: English Vortices Matter Wolf number Solar cycle Sun Solar minimum Magnetogram Astronomy Physics Sunspot
640	Comments on Leif Svalgaard Journal Club Discussion Stanford University Wed. 19 Feb. 2014 Add to Reading List Source URL: www.leif.org. Language: English Space plasmas Astrophysics Flux Vector calculus Magnetic flux Magnetic reconnection Magnetic cloud Solar wind Physics Physical quantities Plasma physics