# # 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 = 49.852452 km # Date (UTC) = 2013-12-05T09:19:20.247 # Date (julian) = 2456631.88842879 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6502.6289 5.5735090e+10 0.057301960 0.033075960 -19.630260 52.961791 6505.1773 5.0470775e+10 0.066465305 0.033844417 -19.780257 52.841795 6507.7257 4.5813584e+10 0.075840844 0.034612873 -19.923558 52.727155 6510.2741 4.1677576e+10 0.085522334 0.035381329 -20.056885 52.620492 6512.8225 3.8125289e+10 0.095647128 0.036149786 -20.191981 52.511808 6515.3708 3.4925282e+10 0.10625267 0.036918242 -20.336977 52.391812 6517.9192 3.1930056e+10 0.11735892 0.037686698 -20.479531 52.273836 6520.4676 2.9157021e+10 0.12901064 0.038455154 -20.608415 52.167174 6523.0160 2.6707551e+10 0.13854045 0.039183068 -20.737298 52.060511 6525.5643 2.4641696e+10 0.14388652 0.039717808 -20.866197 51.957843 6528.1127 2.2785884e+10 0.14895643 0.041531898 -20.995098 51.855612 6530.6611 2.1069055e+10 0.15280269 0.044754209 -21.131229 51.741804 6533.2095 1.9295207e+10 0.15666324 0.047608604 -21.271225 51.621808 6535.7578 1.7676059e+10 0.15782263 0.047895548 -21.398188 51.510500 6538.3062 1.6297063e+10 0.16053693 0.049305793 -21.518183 51.403838 6540.8546 1.5041338e+10 0.16201407 0.051257836 -21.646209 51.289814 6543.4030 1.3752826e+10 0.16281140 0.051487655 -21.786206 51.164817 6545.9513 1.2646936e+10 0.16292989 0.052464090 -21.918173 51.047180 6548.4997 1.1673966e+10 0.16329518 0.053816881 -22.038167 50.940517 6551.0481 1.0816758e+10 0.16228586 0.055252636 -22.159675 50.831837 6553.5965 1.0002433e+10 0.16091201 0.055035224 -22.289672 50.711841 6556.1449 9.1696657e+09 0.15858860 0.053991829 -22.418158 50.593860 6558.6932 8.4705503e+09 0.15643541 0.052648584 -22.538169 50.487183 6561.2416 7.8932296e+09 0.15370779 0.051253621 -22.658180 50.380506 6563.7900 7.2277959e+09 0.15124455 0.049014534 -22.787193 50.261822 6566.3384 6.5848787e+09 0.14944612 0.046991473 -22.917190 50.141826 6568.8867 6.0182288e+09 0.14808209 0.044956537 -23.030158 50.033849 6571.4351 5.5217335e+09 0.14723363 0.044384436 -23.141264 49.927187 6573.9835 5.1697411e+09 0.14532407 0.042868251 -23.255265 49.820525 6576.5319 4.8306182e+09 0.14357761 0.040759199 -23.370816 49.713864 6579.0802 4.4823163e+09 0.14109987 0.037026382 -23.490157 49.599845 6581.6286 4.1752578e+09 0.13917834 0.035406253 -23.615154 49.474848 6584.1770 3.8879544e+09 0.13713772 0.034419092 -23.732800 49.357202 6586.7254 3.6315931e+09 0.13514385 0.033161919 -23.839476 49.250525 6589.2738 3.4198359e+09 0.13284012 0.032502872 -23.948927 49.141830 6591.8221 3.1979300e+09 0.12988676 0.028274230 -24.073923 49.021833 6594.3705 2.9878138e+09 0.12680038 0.025969132 -24.196145 48.903181 6596.9189 2.8120361e+09 0.12316118 0.025723096 -24.302807 48.792075 6599.4673 2.6567456e+09 0.12050879 0.024957834 -24.409469 48.680968 6602.0156 2.5028934e+09 0.11901082 0.027503288 -24.528149 48.561850 6604.5640 2.3447876e+09 0.11667539 0.026406170 -24.648146 48.441854 6607.1124 2.1920566e+09 0.11489129 0.025485062 -24.752120 48.333874 6609.6608 2.0691135e+09 0.11128653 0.023902211 -24.854338 48.227211 6612.2091 1.9495896e+09 0.10892468 0.024164486 -24.964876 48.108611 6614.7575 1.8266685e+09 0.10811596 0.023418589 -25.079874 47.983614 6617.3059 1.7098426e+09 0.10701491 0.023540669 -25.186560 47.870546 6619.8543 1.6076158e+09 0.10658632 0.024732037 -25.288791 47.763871 6622.4027 1.5243837e+09 0.10524319 0.024650820 -25.396145 47.651850 6624.9510 1.4348511e+09 0.10368022 0.025371391 -25.511141 47.531852 6627.4994 1.3486743e+09 0.10164437 0.025509723 -25.619228 47.415422 6630.0478 1.2721883e+09 0.10025280 0.025928419 -25.717001 47.304315 6632.5962 1.2029644e+09 0.098292959 0.026103830 -25.817377 47.191866 6635.1445 1.1447415e+09 0.096448053 0.026421463 -25.932375 47.071870 6637.6929 1.0819843e+09 0.094726721 0.025822044 -26.044099 46.953217 6640.2413 1.0273768e+09 0.094253005 0.025241130 -26.137428 46.842110 6642.7897 9.7937968e+08 0.093683722 0.025184011 -26.230758 46.731004 6645.3380 9.3274380e+08 0.092037111 0.025610045 -26.339119 46.611870 6647.8864 8.8589584e+08 0.090317899 0.026904485 -26.449132 46.491855 6650.4348 8.3686663e+08 0.088963426 0.026354775 -26.559131 46.371857 6652.9832 7.8432285e+08 0.088044203 0.027521032 -26.669129 46.251862 6655.5316 7.3999973e+08 0.085847854 0.027829854 -26.764105 46.139877 6658.0799 7.0276283e+08 0.083393987 0.030202833 -26.857434 46.028771 6660.6283 6.7037096e+08 0.081040539 0.032197096 -26.958360 45.911875 6663.1767 6.4023505e+08 0.079103795 0.032434250 -27.063358 45.791877 6665.7251 6.0145180e+08 0.078474922 0.027359097 -27.165100 45.668624 6668.2734 5.6364383e+08 0.077669170 0.027712745 -27.265097 45.543628 6670.8218 5.2815342e+08 0.077441774 0.026947900 -27.360754 45.430566 6673.3702 5.0211288e+08 0.076940087 0.028012862 -27.454083 45.323903 6675.9186 4.8042001e+08 0.074525216 0.031557747 -27.550092 45.209884 6678.4669 4.5793192e+08 0.073245750 0.030624303 -27.650103 45.084868 6681.0153 4.3580681e+08 0.073946094 0.029669111 -27.750109 44.961867 6683.5637 4.0647517e+08 0.074465208 0.032014684 -27.850107 44.841871 6686.1121 3.8221569e+08 0.073720067 0.033826290 -27.945648 44.725440 6688.6604 3.5972884e+08 0.070419604 0.033937645 -28.034534 44.614333 6691.2088 3.4033432e+08 0.068804214 0.032951994 -28.124342 44.501884 6693.7572 3.2642578e+08 0.067386412 0.031344321 -28.219339 44.381887 6696.3056 3.0943932e+08 0.066798096 0.029802748 -28.315090 44.261135 6698.8540 2.9458978e+08 0.065152726 0.031389971 -28.415088 44.136138 6701.4023 2.7816636e+08 0.062771449 0.031999783 -28.514331 44.011896 6703.9507 2.5902118e+08 0.062442191 0.036054215 -28.609329 43.891900 6706.4991 2.4356996e+08 0.061972109 0.039315026 -28.704327 43.771151 6709.0475 2.2991114e+08 0.060876964 0.041102354 -28.799324 43.646153 6711.5958 2.1935121e+08 0.058255879 0.041370136 -28.893567 43.521910 6714.1442 2.0836215e+08 0.055280365 0.047314251 -28.983565 43.401912 6716.6926 1.9665081e+08 0.052666411 0.049421488 -29.074319 43.281158 6719.2410 1.8741501e+08 0.049791907 0.051140899 -29.169330 43.156143 6721.7893 1.7779201e+08 0.049795505 0.050541733 -29.262076 43.033898 6724.3377 1.6911475e+08 0.046628996 0.047106445 -29.342072 42.927237 6726.8861 1.5835959e+08 0.043011462 0.040959359 -29.422069 42.820576 6729.4345 1.5266229e+08 0.042147809 0.040755837 -29.511075 42.697398 6731.9829 1.4954373e+08 0.039959303 0.043706087 -29.601073 42.572401 6734.5312 1.4351270e+08 0.039249915 0.049321637 -29.691071 42.447404 6737.0796 1.3684609e+08 0.041074407 0.054389159 -29.781069 42.322407 6739.6280 1.2991785e+08 0.041364304 0.063595086 -29.871066 42.201913 6742.1764 1.2732371e+08 0.038839546 0.069040490 -29.961063 42.081915 6744.7247 1.2388533e+08 0.034177998 0.078353979 -30.062642 41.941329 6747.2731 1.1774495e+08 0.029377581 0.067267138 -30.162808 41.801917 6749.8215 1.0965835e+08 0.027263834 0.072053008 -30.247806 41.681922 6752.3699 1.0206137e+08 0.023881982 0.073706469 -30.332803 41.561173 6754.9182 96321610. 0.022098219 0.074736817 -30.417802 41.436175 6757.4666 93699524. 0.019874446 0.075323981 -30.502800 41.311931 6760.0150 89022142. 0.020900240 0.076089874 -30.587798 41.191934 6762.5634 84357387. 0.025449688 0.077142073 -30.672797 41.071181 6765.1118 79520233. 0.028529261 0.079551594 -30.757808 40.946165 6767.6601 77140958. 0.027164349 0.081236592 -30.842816 40.821907 6770.2085 76716701. 0.022014563 0.087385421 -30.927814 40.701909 6772.7569 74526509. 0.017469920 0.093566355 -31.013781 40.578466 6775.3053 69567940. 0.012642079 0.099747289 -31.105209 40.435610 6777.8536 62940336. 0.0074798565 0.10592822 -31.194060 40.301914 6780.4020 61329437. 0.0025457500 0.11210916 -31.279058 40.181918 6782.9504 59162355. -0.0028376041 0.11829009 -31.362053 40.061921 6785.4988 58108670. -0.0087317555 0.12447103 -31.442051 39.941923 6788.0471 52766624. -0.016770387 0.13065196 -31.526628 39.812768 6790.5955 47638053. -0.029356247 0.13683289 -31.618056 39.669912 6793.1439 46476112. -0.074424089 0.14301383 -31.702047 39.541929 6795.6923 46305952. -0.046329793 0.14919476 -31.782045 39.421933 6798.2407 48032911. 0.019485017 0.15537570 -31.869478 39.287065