# # 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 = 54.752247 km # Date (UTC) = 2014-12-13T09:20:26.608 # Date (julian) = 2457004.88919685 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6491.6801 9.0950970e+10 0.034151912 0.029774360 -19.344034 51.755906 6494.2385 8.0179260e+10 0.042735117 0.030545842 -19.476301 51.651681 6496.7969 6.9973611e+10 0.051057717 0.031317324 -19.605692 51.544600 6499.3553 6.1989703e+10 0.058851838 0.032088806 -19.734562 51.437518 6501.9137 5.5812458e+10 0.066085385 0.032860289 -19.859492 51.330435 6504.4721 5.0591374e+10 0.072835335 0.033631771 -19.984421 51.223353 6507.0305 4.6183018e+10 0.079225116 0.034403253 -20.109350 51.120176 6509.5890 4.2215227e+10 0.085556428 0.035174735 -20.234280 51.017556 6512.1474 3.8831002e+10 0.092220159 0.035946217 -20.359219 50.912098 6514.7058 3.5619118e+10 0.099552639 0.036717700 -20.484164 50.805003 6517.2642 3.2937777e+10 0.10814378 0.037489182 -20.609103 50.697912 6519.8226 3.0627359e+10 0.11836551 0.038260664 -20.734033 50.590829 6522.3810 2.8405339e+10 0.12932370 0.039017025 -20.860571 50.481714 6524.9394 2.6170991e+10 0.13654999 0.039760697 -20.996099 50.361244 6527.4978 2.3894102e+10 0.14282370 0.041077909 -21.129224 50.242911 6530.0563 2.1798168e+10 0.15032005 0.043907449 -21.249691 50.135830 6532.6147 2.0012922e+10 0.15764516 0.047197679 -21.370158 50.028748 6535.1731 1.8438907e+10 0.16409092 0.048149217 -21.486542 49.921653 6537.7315 1.6976652e+10 0.16856909 0.049030089 -21.602563 49.814556 6540.2899 1.5583371e+10 0.17085857 0.050991058 -21.718574 49.710491 6542.8483 1.4283822e+10 0.16945701 0.051324304 -21.834580 49.607871 6545.4067 1.3059893e+10 0.16710603 0.052459211 -21.950585 49.503305 6547.9651 1.1950975e+10 0.16500587 0.053654387 -22.066591 49.396224 6550.5235 1.0956051e+10 0.16309429 0.055116451 -22.182597 49.289143 6553.0820 1.0050972e+10 0.16143589 0.055293869 -22.298602 49.182060 6555.6404 9.2274508e+09 0.15925853 0.054315303 -22.414608 49.074977 6558.1988 8.4678292e+09 0.15737488 0.053069920 -22.526374 48.967882 6560.7572 7.7847212e+09 0.15473502 0.051591605 -22.637932 48.860787 6563.3156 7.1955662e+09 0.15252534 0.049563288 -22.749480 48.753700 6565.8740 6.6772955e+09 0.15036861 0.047325943 -22.861024 48.646617 6568.4324 6.1997962e+09 0.14914633 0.045374161 -22.970465 48.539534 6570.9908 5.7704631e+09 0.14787156 0.044507071 -23.077547 48.432452 6573.5492 5.3648845e+09 0.14628645 0.043216723 -23.185656 48.325369 6576.1077 4.9940885e+09 0.14421675 0.041247475 -23.297200 48.218288 6578.6661 4.6582894e+09 0.14170681 0.037597811 -23.408739 48.111207 6581.2245 4.3528255e+09 0.13918281 0.035528633 -23.515890 48.004110 6583.7829 4.0733799e+09 0.13684549 0.034625401 -23.622986 47.897013 6586.3413 3.8248590e+09 0.13424630 0.033166884 -23.726735 47.789928 6588.8997 3.5892943e+09 0.13163465 0.033079467 -23.829355 47.682846 6591.4581 3.3698345e+09 0.12804958 0.028684966 -23.934236 47.573505 6594.0165 3.1752068e+09 0.12443790 0.026163445 -24.041319 47.461961 6596.5750 2.9747288e+09 0.12083270 0.025724660 -24.150620 47.348050 6599.1334 2.7835640e+09 0.11860808 0.024937751 -24.266070 47.227579 6601.6918 2.5911576e+09 0.11883505 0.027371476 -24.378021 47.110761 6604.2502 2.4089197e+09 0.11785710 0.026219828 -24.480655 47.003665 6606.8086 2.2571007e+09 0.11740477 0.026050940 -24.583288 46.896570 6609.3670 2.1265223e+09 0.11429416 0.023814950 -24.685908 46.789487 6611.9254 2.0070626e+09 0.11166377 0.024368311 -24.788529 46.682404 6614.4838 1.8956839e+09 0.11070273 0.023607151 -24.887621 46.575322 6617.0422 1.7884089e+09 0.10929370 0.023453255 -24.985780 46.468239 6619.6007 1.6871478e+09 0.10866439 0.024670842 -25.083939 46.361157 6622.1591 1.5974007e+09 0.10730941 0.024715654 -25.182097 46.254076 6624.7175 1.5101208e+09 0.10536215 0.025246372 -25.280259 46.146990 6627.2759 1.4388041e+09 0.10295039 0.025423382 -25.378431 46.039893 6629.8343 1.3612074e+09 0.10136344 0.025958261 -25.477426 45.931559 6632.3927 1.2803021e+09 0.099172103 0.026079435 -25.587857 45.806070 6634.9511 1.2041377e+09 0.097247152 0.026396222 -25.697032 45.681963 6637.5095 1.1302217e+09 0.095266905 0.025911857 -25.790728 45.574882 6640.0679 1.0732824e+09 0.094461645 0.025262339 -25.884425 45.467801 6642.6264 1.0215400e+09 0.093749779 0.025177328 -25.978122 45.360718 6645.1848 9.7280933e+08 0.091926490 0.025538242 -26.071820 45.253634 6647.7432 9.2819602e+08 0.089864512 0.026829068 -26.165517 45.146552 6650.3016 8.8396185e+08 0.088306549 0.026324280 -26.259213 45.039471 6652.8600 8.4346782e+08 0.087339026 0.027487143 -26.357029 44.927681 6655.4184 8.0166317e+08 0.085651070 0.027783106 -26.462456 44.807193 6657.9768 7.5991912e+08 0.083924765 0.030034199 -26.562065 44.689919 6660.5352 7.1805376e+08 0.082368291 0.032112503 -26.651299 44.578375 6663.0936 6.7966910e+08 0.081028678 0.032457260 -26.740534 44.467358 6665.6521 6.5078051e+08 0.080492749 0.027478705 -26.829770 44.360277 6668.2105 6.2428619e+08 0.079617494 0.027657028 -26.919006 44.253195 6670.7689 5.9650908e+08 0.079154651 0.026972421 -27.018022 44.134375 6673.3273 5.6462698e+08 0.078642725 0.027948712 -27.118412 44.013905 6675.8857 5.3226397e+08 0.076291558 0.031494811 -27.208935 43.905277 6678.4441 5.0452952e+08 0.074984025 0.030639568 -27.298170 43.798194 6681.0025 4.8331979e+08 0.075607499 0.029659299 -27.387413 43.691103 6683.5609 4.6489199e+08 0.075946164 0.032010647 -27.476660 43.584008 6686.1194 4.4460362e+08 0.075101985 0.033830525 -27.568371 43.469512 6688.6778 4.2240150e+08 0.071751102 0.033941641 -27.663743 43.344023 6691.2362 3.9948734e+08 0.070186427 0.032945541 -27.754768 43.226082 6693.7946 3.8083595e+08 0.068825169 0.031331496 -27.839541 43.119000 6696.3530 3.6480767e+08 0.068261861 0.029822449 -27.926104 43.009657 6698.9114 3.4656121e+08 0.066684953 0.031468832 -28.021476 42.889189 6701.4698 3.2746562e+08 0.064424077 0.032098808 -28.114975 42.771085 6704.0282 3.1032085e+08 0.064206863 0.036191417 -28.199749 42.664002 6706.5866 2.9633719e+08 0.063825222 0.039467413 -28.284522 42.556920 6709.1451 2.8134550e+08 0.062946713 0.041040281 -28.374514 42.432620 6711.7035 2.6779863e+08 0.060660841 0.041492586 -28.464865 42.307130 6714.2619 2.5496980e+08 0.058214021 0.047323096 -28.549966 42.198990 6716.8203 2.4421422e+08 0.056048854 0.049609573 -28.634751 42.091894 6719.3787 2.3619293e+08 0.053733533 0.051010044 -28.723445 41.975407 6721.9371 2.2591602e+08 0.053987658 0.050586256 -28.813797 41.854937 6724.4955 2.1667212e+08 0.050589549 0.045788710 -28.904149 41.734468 6727.0539 2.0830091e+08 0.047529043 0.040888528 -28.994501 41.614000 6729.6123 1.9744696e+08 0.046714356 0.040637282 -29.077647 41.503140 6732.1708 1.8534187e+08 0.044716778 0.043771645 -29.157958 41.396057 6734.7292 1.7725417e+08 0.044289652 0.049309727 -29.243054 41.280204 6737.2876 1.6927473e+08 0.046151134 0.055051665 -29.333406 41.154714 6739.8460 1.6379861e+08 0.046319306 0.063861887 -29.421326 41.031655 6742.4044 1.5481020e+08 0.043336667 0.069596160 -29.506659 40.911185 6744.9628 1.4633399e+08 0.038905092 0.078538126 -29.591997 40.790707 6747.5212 1.3943651e+08 0.034315156 0.067181722 -29.677343 40.670221 6750.0796 1.2984214e+08 0.031710136 0.072140120 -29.757938 40.556439 6752.6381 1.2720541e+08 0.028773348 0.073396132 -29.833788 40.449357 6755.1965 1.2441832e+08 0.026675737 0.074519209 -29.912093 40.337508 6757.7549 1.2289152e+08 0.024798761 0.074449215 -29.997426 40.212019 6760.3133 1.2000620e+08 0.025543177 0.076658692 -30.082759 40.087868 6762.8717 1.1214466e+08 0.030469745 0.076644727 -30.168091 39.967400 6765.4301 1.0245294e+08 0.033201272 0.079609711 -30.253424 39.846932 6767.9885 97411350. 0.030867196 0.080868880 -30.338756 39.726461 6770.5469 93618111. 0.025650149 0.088206250 -30.422671 39.605992 6773.1053 89887172. 0.021165567 0.094411522 -30.502984 39.485524 6775.6638 88212420. 0.016724172 0.10061679 -30.584753 39.365055 6778.2222 84033407. 0.012242361 0.10682207 -30.670086 39.244584 6780.7806 80623185. 0.0077780039 0.11302734 -30.753924 39.124114 6783.3390 79825951. 0.0033589109 0.11923261 -30.834236 39.003643 6785.8974 75711776. -0.0011299937 0.12543789 -30.914553 38.881634 6788.4558 68748726. -0.0056975823 0.13164316 -30.994877 38.756126 6791.0142 63359745. -0.010268198 0.13784843 -31.075198 38.632200 6793.5726 59443727. -0.014853796 0.14405370 -31.155511 38.511732 6796.1310 59972388. -0.019361816 0.15025898 -31.239514 38.385728 6798.6895 61030732. -0.023938652 0.15646425 -31.331303 38.248045 6801.2479 59330095. -0.028752671 0.16266952 -31.413551 38.120319 6803.8063 56750436. -0.033866989 0.16887479 -31.488845 37.999850 6806.3647 53849851. -0.039508434 0.17508007 -31.567080 37.879380 6808.9231 49806915. -0.046969863 0.18128534 -31.647393 37.758910 6811.4815 46884692. -0.067988285 0.18749061 -31.724724 37.638441 6814.0399 46296706. -0.059260166 0.19369588 -31.800017 37.517973 6816.5983 48020289. -0.035276636 0.19990116 -31.881784 37.387145