# # Data product developed by Dr. E. Thiemann from the # Laboratory for Atmospheric and Space Physics, Boulder, Colorado # in the frame of the PROBA2 guest investigator program. # # Please address your questions to E. Thiemann (thiemann@lasp.colorado.edu) and # to the LYRA Principal Investigator M. Dominique (marie.dominique@oma.be) # # PROBA2 data products are open to all. # Users should however refer to the following paper: http://arxiv.org/abs/1708.08833 # and acknowledge the instrument according to the rules described # at http://proba2.oma.be/data/termsOfUse in their papers and presentations # # Website reference http://proba2.oma.be/lyra/data/EarthAtmosphere/ # # Description: # Summed neutral N2 and O number density profiles, spanning altitudes between 150 and 400 km # retrieved from LYRA data acquired during occultations by the unit 3 (backup unit) zirconium # channel (bandpass: 1-2 nm + 6-20 nm). # # Radial distance is the distance from the center of Earth expressed in km to which the density corresponds. # Density O-N2 provides the summed number density of neutral O and N2 in units of radial distance and cm^-3. # The systematic error is a signed value (asymmetric) in fractional units and is primarily from the error made by # assuming that the absorption cross-sections of O and N2 are equal; a secondary source of systematic error is # from using a single-scale height atmosphere in the reference atmosphere used by the retrieval algorithm. # The random error is an unsigned value (to be applied symmetrically to the measurement) in fractional # units and gathers the uncertainties from solar spectra, solar variability and measurement noise. # Both uncertainties are described in http://arxiv.org/abs/1708.08833. # The Longitude and Latitude (in degrees) columns refer to the tangential point along the # line-of-sight, where most of the absorption occurs. # # Scale height = 50.370143 km # Date (UTC) = 2015-01-27T10:25:42.293 # Date (julian) = 2457049.93451727 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6493.3497 1.2855093e+11 0.022481421 0.030277843 -28.111276 60.357900 6495.4896 9.9663815e+10 0.029549584 0.030923099 -28.373209 60.189994 6497.6294 8.2280325e+10 0.036378719 0.031568356 -28.599321 60.045050 6499.7692 6.9694876e+10 0.043132046 0.032213613 -28.818936 59.904120 6501.9090 6.0884869e+10 0.050099550 0.032858869 -29.074216 59.736174 6504.0488 5.3294228e+10 0.057285697 0.033504126 -29.329494 59.568228 6506.1887 4.7017219e+10 0.064894560 0.034149383 -29.581659 59.401903 6508.3285 4.2555409e+10 0.073368791 0.034794640 -29.783148 59.261981 6510.4683 3.9223462e+10 0.082840006 0.035439896 -29.997400 59.114459 6512.6081 3.6506399e+10 0.093308806 0.036085153 -30.245960 58.946513 6514.7479 3.3898762e+10 0.10463707 0.036730410 -30.453332 58.800477 6516.8878 3.1456203e+10 0.11684629 0.037375666 -30.649262 58.660526 6519.0276 2.9206801e+10 0.12989400 0.038020923 -30.845192 58.515001 6521.1674 2.6806285e+10 0.14344244 0.038666180 -31.049337 58.364761 6523.3072 2.4347012e+10 0.15369168 0.039255254 -31.284406 58.196855 6525.4470 2.2089785e+10 0.16176458 0.039731196 -31.487221 58.045067 6527.5868 2.0187806e+10 0.16918785 0.041142529 -31.677553 57.899518 6529.7267 1.8781515e+10 0.17535809 0.043393299 -31.862653 57.759202 6531.8665 1.7415246e+10 0.17954940 0.046489858 -32.052866 57.614105 6534.0063 1.5987068e+10 0.18061671 0.047946320 -32.274554 57.439442 6536.1461 1.4566152e+10 0.17931242 0.047921241 -32.468170 57.283985 6538.2859 1.3280206e+10 0.17892489 0.049295919 -32.647306 57.138437 6540.4258 1.2249631e+10 0.17754207 0.051055242 -32.826413 56.992914 6542.5656 1.1395429e+10 0.17503227 0.051216963 -33.005033 56.847879 6544.7054 1.0659198e+10 0.17308943 0.052216580 -33.178569 56.707929 6546.8452 9.8884260e+09 0.17093237 0.053160003 -33.362530 56.557555 6548.9850 9.1291791e+09 0.16855003 0.053961811 -33.570784 56.382890 6551.1249 8.3865256e+09 0.16694286 0.055279577 -33.746316 56.231859 6553.2647 7.7235523e+09 0.16548993 0.055202019 -33.914256 56.086312 6555.4045 7.2030657e+09 0.16347519 0.054513494 -34.082195 55.940765 6557.5443 6.7181151e+09 0.16139460 0.053524931 -34.250126 55.795225 6559.6841 6.2767240e+09 0.15886084 0.052309962 -34.418032 55.649705 6561.8239 5.8852378e+09 0.15605534 0.050966657 -34.580890 55.504173 6563.9638 5.5366398e+09 0.15291695 0.048813509 -34.737636 55.358626 6566.1036 5.2172629e+09 0.15046733 0.047124285 -34.898108 55.209350 6568.2434 4.9202793e+09 0.14855818 0.045547914 -35.060450 55.058204 6570.3832 4.6348683e+09 0.14661633 0.044758764 -35.217868 54.911981 6572.5230 4.3582065e+09 0.14434183 0.043930622 -35.374610 54.766433 6574.6629 4.1096320e+09 0.14149753 0.042536634 -35.531353 54.620886 6576.8027 3.8665490e+09 0.13841489 0.040447491 -35.686379 54.475338 6578.9425 3.6490058e+09 0.13475803 0.037161297 -35.837526 54.329789 6581.0823 3.4529369e+09 0.13186641 0.035571682 -35.988656 54.181343 6583.2221 3.2536363e+09 0.12985592 0.034909230 -36.139772 54.030230 6585.3620 3.0663662e+09 0.12793880 0.033681397 -36.286801 53.883199 6587.5018 2.8847980e+09 0.12639065 0.033269544 -36.432349 53.737649 6589.6416 2.7224743e+09 0.12456113 0.031773112 -36.577898 53.586798 6591.7814 2.5737501e+09 0.12224189 0.028320176 -36.723446 53.436554 6593.9212 2.4364741e+09 0.12002089 0.026245754 -36.868993 53.291007 6596.0611 2.3048185e+09 0.11736988 0.025726996 -37.012442 53.143362 6598.2009 2.1769418e+09 0.11562387 0.025311263 -37.152392 52.992216 6600.3407 2.0566650e+09 0.11507855 0.025690268 -37.292342 52.844363 6602.4805 1.9377344e+09 0.11438980 0.027106587 -37.432292 52.698814 6604.6203 1.8391435e+09 0.11322923 0.026439606 -37.556204 52.566098 6606.7601 1.7572875e+09 0.11212461 0.026138006 -37.676158 52.436550 6608.9000 1.6819544e+09 0.10898412 0.023708576 -37.806429 52.295535 6611.0398 1.6165281e+09 0.10574001 0.024933086 -37.940756 52.150015 6613.1796 1.5406542e+09 0.10452623 0.023639487 -38.075104 51.999256 6615.3194 1.4719891e+09 0.10291104 0.023261359 -38.208644 51.848921 6617.4592 1.4148582e+09 0.10142160 0.023591509 -38.337398 51.703374 6619.5991 1.3421090e+09 0.10047102 0.024670457 -38.468158 51.555821 6621.7389 1.2737057e+09 0.099093390 0.024844543 -38.602511 51.404675 6623.8787 1.2095473e+09 0.096880413 0.024817369 -38.720391 51.265884 6626.0185 1.1628435e+09 0.095335578 0.026567314 -38.825951 51.136333 6628.1583 1.1341031e+09 0.093266287 0.025767380 -38.942829 50.998977 6630.2982 1.0926855e+09 0.091774539 0.025929036 -39.071582 50.853431 6632.4380 1.0419391e+09 0.090407472 0.026084862 -39.196409 50.703955 6634.5778 9.8837776e+08 0.089275140 0.026368989 -39.319565 50.552809 6636.7176 9.3616732e+08 0.088079750 0.026271076 -39.442697 50.401691 6638.8574 8.9034242e+08 0.087230841 0.025634286 -39.563568 50.253347 6640.9972 8.5804240e+08 0.087907400 0.025148637 -39.669129 50.123797 6643.1371 8.2809866e+08 0.087487222 0.025213314 -39.775222 49.993535 6645.2769 8.0008530e+08 0.086473615 0.025581395 -39.892779 49.847989 6647.4167 7.6620856e+08 0.085391839 0.026657176 -40.010336 49.700997 6649.5565 7.2113846e+08 0.084575211 0.026866548 -40.127894 49.549851 6651.6963 6.8717845e+08 0.084143887 0.027017811 -40.237529 49.408892 6653.8362 6.5824793e+08 0.083509786 0.027952575 -40.338291 49.279342 6655.9760 6.3031547e+08 0.081748318 0.028013493 -40.445562 49.141422 6658.1158 6.0470174e+08 0.080256664 0.030266450 -40.563119 48.990276 6660.2556 5.7649718e+08 0.078792476 0.031858341 -40.677312 48.839131 6662.3954 5.4955202e+08 0.077343471 0.032822408 -40.789272 48.687985 6664.5353 5.2367930e+08 0.076303145 0.030247613 -40.888196 48.554436 6666.6751 5.0028302e+08 0.076036531 0.027040142 -40.984158 48.424885 6668.8149 4.8426559e+08 0.074696491 0.028191896 -41.091810 48.283645 6670.9547 4.6392990e+08 0.074565350 0.026886330 -41.203770 48.138099 6673.0945 4.4398919e+08 0.074066936 0.027600594 -41.310425 47.987293 6675.2343 4.2303099e+08 0.072380187 0.030247222 -41.415130 47.839577 6677.3742 4.0187610e+08 0.070666883 0.031826299 -41.511091 47.710027 6679.5140 3.9153564e+08 0.070514464 0.029843036 -41.607817 47.578889 6681.6538 3.7574536e+08 0.071551980 0.030158948 -41.714180 47.427744 6683.7936 3.5910798e+08 0.072013740 0.032351647 -41.818936 47.276598 6685.9334 3.4051072e+08 0.071704263 0.033690784 -41.919700 47.125452 6688.0733 3.2319000e+08 0.069438747 0.033802102 -42.015656 46.985121 6690.2131 3.1381837e+08 0.067627515 0.033091444 -42.106821 46.855570 6692.3529 3.0223757e+08 0.066683827 0.032355527 -42.201985 46.717021 6694.4927 2.8837524e+08 0.065984606 0.030570455 -42.302749 46.565875 6696.6325 2.7238101e+08 0.065752552 0.029938592 -42.403513 46.414730 6698.7724 2.5886478e+08 0.064653114 0.031277965 -42.504277 46.263587 6700.9122 2.4913193e+08 0.062851297 0.031344304 -42.592890 46.134716 6703.0520 2.4160750e+08 0.062453418 0.033805342 -42.679257 46.009963 6705.1918 2.2813373e+08 0.062593548 0.037009612 -42.776547 45.865180 6707.3316 2.1705869e+08 0.062196275 0.040139320 -42.877291 45.714064 6709.4715 2.0781080e+08 0.061332324 0.040832677 -42.972607 45.562918 6711.6113 1.9927967e+08 0.059319544 0.041387690 -43.066129 45.415804 6713.7511 1.9098346e+08 0.057127231 0.046403151 -43.152496 45.286254 6715.8909 1.8266928e+08 0.055280423 0.048289783 -43.239765 45.154488 6718.0307 1.7411191e+08 0.053113216 0.049860268 -43.334932 45.003344 6720.1705 1.6956664e+08 0.051939268 0.050400006 -43.428328 44.852200 6722.3104 1.6470581e+08 0.051607749 0.050221513 -43.517896 44.701054 6724.4502 1.5717099e+08 0.048527467 0.046167343 -43.603224 44.561352 6726.5900 1.5557612e+08 0.045582484 0.040956689 -43.684792 44.431802 6728.7298 1.4558983e+08 0.045141977 0.040662495 -43.769925 44.292625 6730.8696 1.3984498e+08 0.043418245 0.041571285 -43.859493 44.141480 6733.0095 1.3464100e+08 0.042174355 0.043975659 -43.952753 43.990333 6735.1493 1.2583983e+08 0.042325147 0.049451901 -44.047921 43.839186 6737.2891 1.2419341e+08 0.043847236 0.055056489 -44.127027 43.706894 6739.4289 1.2133826e+08 0.044159645 0.063351462 -44.203797 43.577344 6741.5687 1.1412140e+08 0.042401545 0.067380754 -44.290649 43.430781 6743.7086 1.1110229e+08 0.037951019 0.075827319 -44.380182 43.279682 6745.8484 1.0112696e+08 0.036202364 0.078923535 -44.464155 43.134131 6747.9882 96501181. 0.031968002 0.067020965 -44.546570 42.992037 6750.1280 95768861. 0.029244488 0.072222713 -44.623340 42.862487 6752.2678 93508809. 0.026423904 0.073824549 -44.701058 42.730093 6754.4076 92607319. 0.025088423 0.075557923 -44.785029 42.578947 6756.5475 89255672. 0.022366537 0.075575620 -44.869000 42.427800 6758.6873 86460568. 0.022606706 0.075158678 -44.952971 42.276653 6760.8271 80312147. 0.022761459 0.077638520 -45.030234 42.137579 6762.9669 74500369. 0.027602091 0.076491120 -45.102205 42.008029 6765.1067 71580846. 0.029771191 0.079550679 -45.179875 41.868224 6767.2466 71556365. 0.028941768 0.081699682 -45.263845 41.717078 6769.3864 66978667. 0.023671153 0.085391401 -45.347814 41.565934 6771.5262 65234317. 0.019246658 0.090581402 -45.431783 41.414790 6773.6660 62605503. 0.014384407 0.095771404 -45.515738 41.263671 6775.8058 62181368. 0.0090557112 0.10096141 -45.597755 41.115045 6777.9457 61136064. 0.0014396800 0.10615141 -45.664929 40.985494 6780.0855 54586285. -0.028244017 0.11134141 -45.732454 40.855443 6782.2253 50702678. -0.012715221 0.11653141 -45.810825 40.709894 6784.3651 49719088. 0.031314861 0.12172141 -45.889197 40.562974