# # 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 = 42.612967 km # Date (UTC) = 2015-12-02T07:42:09.674 # Date (julian) = 2457358.82094530 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6499.3142 7.1996486e+10 0.042152018 0.032076417 8.1436116 56.164659 6501.4781 6.7748395e+10 0.049804979 0.032728929 7.9989023 56.069565 6503.6420 6.3315925e+10 0.057740082 0.033381441 7.8668049 55.982758 6505.8059 5.9410450e+10 0.066113861 0.034033952 7.7347075 55.895951 6507.9697 5.5632628e+10 0.074922107 0.034686464 7.5954340 55.802794 6510.1336 5.1476093e+10 0.084062285 0.035338975 7.4510877 55.705148 6512.2975 4.7358092e+10 0.093636566 0.035991487 7.3113067 55.610003 6514.4614 4.3881391e+10 0.10389316 0.036643999 7.1867743 55.523207 6516.6253 4.0828939e+10 0.11482734 0.037296510 7.0622418 55.436412 6518.7891 3.8007913e+10 0.12635893 0.037949022 6.9286718 55.343317 6520.9530 3.5054995e+10 0.13829579 0.038601534 6.7885707 55.245670 6523.1169 3.2188238e+10 0.14758077 0.039208083 6.6519733 55.150465 6525.2808 2.9636272e+10 0.15452261 0.039750172 6.5274409 55.063669 6527.4446 2.7447077e+10 0.16059836 0.041039287 6.4029085 54.976874 6529.6085 2.5348429e+10 0.16580779 0.043205104 6.2718637 54.883838 6531.7724 2.3116798e+10 0.17033347 0.046352914 6.1360084 54.786192 6533.9363 2.1023304e+10 0.17314037 0.047917476 6.0034662 54.690928 6536.1002 1.9190451e+10 0.17405531 0.047880112 5.8826917 54.604121 6538.2640 1.7683565e+10 0.17583599 0.049285251 5.7619171 54.517315 6540.4279 1.6363202e+10 0.17562072 0.051056258 5.6349647 54.421908 6542.5918 1.4967609e+10 0.17351787 0.051226914 5.5033543 54.320017 6544.7557 1.3629175e+10 0.17163630 0.052257359 5.3748840 54.221367 6546.9195 1.2491079e+10 0.16955058 0.053221162 5.2578993 54.134571 6549.0834 1.1516648e+10 0.16719681 0.054051294 5.1409146 54.047774 6551.2473 1.0655612e+10 0.16561141 0.055322557 5.0180674 53.954850 6553.4112 9.8090633e+09 0.16402622 0.055128374 4.8907024 53.857204 6555.5751 8.9698126e+09 0.16207470 0.054370180 4.7663004 53.761039 6557.7389 8.2865848e+09 0.16023243 0.053402942 4.6530893 53.670471 6559.9028 7.7428754e+09 0.15788914 0.052285279 4.5398782 53.579903 6562.0667 7.2388534e+09 0.15510343 0.050816446 4.4187386 53.485367 6564.2306 6.7094806e+09 0.15221728 0.048667104 4.2913547 53.387707 6566.3944 6.1895329e+09 0.15012570 0.046959748 4.1676380 53.291495 6568.5583 5.7472191e+09 0.14825904 0.045258431 4.0582007 53.200925 6570.7222 5.4009006e+09 0.14639957 0.044618349 3.9487634 53.110356 6572.8861 5.0897298e+09 0.14417666 0.043722721 3.8317404 53.015863 6575.0500 4.7380902e+09 0.14161589 0.042324585 3.7086210 52.918217 6577.2138 4.3874838e+09 0.13861112 0.039884490 3.5889749 52.821979 6579.3777 4.0780230e+09 0.13512470 0.036862852 3.4833112 52.731409 6581.5416 3.8236966e+09 0.13186083 0.035432608 3.3776476 52.640840 6583.7055 3.5904482e+09 0.12854966 0.034664590 3.2647307 52.544054 6585.8693 3.3555239e+09 0.12529431 0.033275751 3.1458569 52.442163 6588.0332 3.1208192e+09 0.12297329 0.033368836 3.0295381 52.343193 6590.1971 2.9238678e+09 0.12035598 0.030695427 2.9238604 52.256386 6592.3610 2.7521564e+09 0.11787528 0.027722905 2.8181827 52.169580 6594.5249 2.5948649e+09 0.11555229 0.025884402 2.7076355 52.074566 6596.6887 2.4320168e+09 0.11301837 0.025724142 2.5930075 51.972673 6598.8526 2.2678096e+09 0.11122197 0.025000098 2.4807820 51.872917 6601.0165 2.1366240e+09 0.11112265 0.027053456 2.3788918 51.782349 6603.1804 2.0195388e+09 0.10997825 0.026556495 2.2770016 51.691780 6605.3442 1.9132621e+09 0.10913759 0.026953839 2.1682495 51.595112 6607.5081 1.7948075e+09 0.10740611 0.024703639 2.0536214 51.493219 6609.6720 1.6783675e+09 0.10436029 0.023905548 1.9420193 51.394094 6611.8359 1.5805840e+09 0.10167483 0.024425411 1.8439028 51.307299 6613.9998 1.4935087e+09 0.10044077 0.023940659 1.7457863 51.220503 6616.1636 1.4113566e+09 0.098678626 0.023307982 1.6411277 51.125656 6618.3275 1.3341267e+09 0.097765174 0.024018108 1.5307451 51.023764 6620.4914 1.2603495e+09 0.096689100 0.024925548 1.4225424 50.923884 6622.6553 1.1988837e+09 0.094884203 0.024583582 1.3244128 50.833304 6624.8191 1.1477711e+09 0.092836681 0.025300795 1.2262833 50.742723 6626.9830 1.0890717e+09 0.090331706 0.025338436 1.1239230 50.646166 6629.1469 1.0311300e+09 0.088795101 0.026082544 1.0177859 50.544274 6631.3108 9.6826796e+08 0.086654463 0.025962335 0.91368810 50.444340 6633.4747 9.1399955e+08 0.084829018 0.026235124 0.81934558 50.353772 6635.6385 8.6687995e+08 0.083021354 0.026495546 0.72500306 50.263204 6637.8024 8.2759095e+08 0.081765766 0.025768413 0.62449185 50.166713 6639.9663 7.8865094e+08 0.081678765 0.025282699 0.51835412 50.064820 6642.1302 7.4707885e+08 0.081998106 0.025157023 0.41292783 49.962928 6644.2940 7.1100393e+08 0.081154421 0.025375387 0.31103621 49.861037 6646.4579 6.6797389e+08 0.080354950 0.026157185 0.20914459 49.759146 6648.6218 6.3284970e+08 0.079396033 0.027380523 0.11643852 49.666440 6650.7857 6.0481950e+08 0.078981809 0.026435102 0.025857650 49.575858 6652.9496 5.7716309e+08 0.078670247 0.027511784 -0.066561689 49.483438 6655.1134 5.5616775e+08 0.077400595 0.027657089 -0.16845330 49.381546 6657.2773 5.2865298e+08 0.075590163 0.029222790 -0.27034492 49.279654 6659.4412 4.9886223e+08 0.074158385 0.031742565 -0.36881000 49.177763 6661.6051 4.7237310e+08 0.072782142 0.032843126 -0.46645613 49.075872 6663.7690 4.4149640e+08 0.071507327 0.032270118 -0.55920157 48.979094 6665.9328 4.1875665e+08 0.071438127 0.027018658 -0.64599716 48.888524 6668.0967 4.0285629e+08 0.070574194 0.027556353 -0.73279274 48.797954 6670.2606 3.8693073e+08 0.069951699 0.027207908 -0.82828776 48.698308 6672.4245 3.6986650e+08 0.069532703 0.027125625 -0.92593390 48.596417 6674.5883 3.4560367e+08 0.068310391 0.029451094 -1.0235800 48.494526 6676.7522 3.2397296e+08 0.065998472 0.032198524 -1.1212262 48.392633 6678.9161 3.0659863e+08 0.065113461 0.030323890 -1.2175435 48.291770 6681.0800 2.9693959e+08 0.065966338 0.029718713 -1.3005649 48.201202 6683.2439 2.8761210e+08 0.066421538 0.031545948 -1.3835863 48.110634 6685.4077 2.7273945e+08 0.066176720 0.033135500 -1.4711907 48.015066 6687.5716 2.5830852e+08 0.064264185 0.034024109 -1.5646059 47.913157 6689.7355 2.4066324e+08 0.062194925 0.033353970 -1.6580199 47.810886 6691.8994 2.3203837e+08 0.061252128 0.032789073 -1.7514205 47.704749 6694.0632 2.2199606e+08 0.060393206 0.031172391 -1.8448212 47.598612 6696.2271 2.1004945e+08 0.060349010 0.029770149 -1.9382218 47.495577 6698.3910 2.0014842e+08 0.059438736 0.030754505 -2.0316224 47.393686 6700.5549 1.8596488e+08 0.057795687 0.031079284 -2.1197160 47.296040 6702.7188 1.7941652e+08 0.057023553 0.033450657 -2.1989638 47.205471 6704.8826 1.7372790e+08 0.057272674 0.036610971 -2.2782115 47.114901 6707.0465 1.6527545e+08 0.056937431 0.040180164 -2.3646431 47.016122 6709.2104 1.5747066e+08 0.056292461 0.040998727 -2.4537988 46.914229 6711.3743 1.4736861e+08 0.054460469 0.041118043 -2.5429543 46.812337 6713.5381 1.4072785e+08 0.052371985 0.045632968 -2.6321095 46.710446 6715.7020 1.3681503e+08 0.050547212 0.048096594 -2.7212030 46.608555 6717.8659 1.3069410e+08 0.048485307 0.049820709 -2.8061142 46.506663 6720.0298 1.2315581e+08 0.047274152 0.050416316 -2.8910239 46.404771 6722.1937 1.1427175e+08 0.047179578 0.050365798 -2.9787390 46.300072 6724.3575 1.0697234e+08 0.044337041 0.046941044 -3.0679075 46.193919 6726.5214 1.0171665e+08 0.041255741 0.040956070 -3.1557829 46.089060 6728.6853 98573918. 0.040826925 0.040599376 -3.2406925 45.987169 6730.8492 97422921. 0.039260534 0.041543212 -3.3256021 45.885278 6733.0130 87202711. 0.038023431 0.043995120 -3.4105122 45.783386 6735.1769 78345128. 0.038240774 0.049481247 -3.4954224 45.681493 6737.3408 72849626. 0.039887584 0.055221188 -3.5778157 45.579601 6739.5047 69611911. 0.040326391 0.063444180 -3.6584799 45.477710 6741.6686 72446944. 0.038851024 0.067665448 -3.7401518 45.375819 6743.8324 68766439. 0.034307625 0.076663006 -3.8250615 45.273927 6745.9963 64902115. 0.032898691 0.078985727 -3.9099712 45.172035 6748.1602 61621375. 0.028632109 0.067859656 -3.9911368 45.066399 6750.3241 58000866. 0.025517721 0.072557488 -4.0718010 44.960262 6752.4879 55567303. 0.022200572 0.073569834 -4.1524653 44.856359 6754.6518 51324063. 0.018671448 0.075165260 -4.2331295 44.754467 6756.8157 46810650. 0.0050489557 0.076265825 -4.3137937 44.652575 6758.9796 47542744. 0.014079597 0.075776769 -4.3944582 44.550684 6763.3073 50446037. 0.038982229 0.077373755 -4.5557870 44.346900