# # 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 = 53.366453 km # Date (UTC) = 2012-02-02T10:59:03.863 # Date (julian) = 2455959.95768359 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6503.3161 1.7336756e+11 0.063256368 0.033283163 70.967324 64.105199 6505.5382 1.4624084e+11 0.072909474 0.033953245 71.464865 63.846703 6507.7604 1.2402407e+11 0.082730225 0.034623328 71.891340 63.617126 6509.9825 1.0497407e+11 0.092720853 0.035293410 72.379214 63.358214 6512.2047 8.9678818e+10 0.10295984 0.035963492 72.791264 63.126938 6514.4268 7.5486757e+10 0.11325227 0.036633575 73.253683 62.859725 6516.6490 6.4887099e+10 0.12398307 0.037303657 73.634322 62.641713 6518.8711 5.6859588e+10 0.13524347 0.037973739 74.000245 62.423752 6521.0932 5.0560477e+10 0.14696217 0.038643822 74.357805 62.205729 6523.3154 4.4673049e+10 0.15518111 0.039257282 74.817578 61.925073 6525.5375 3.9346538e+10 0.16067243 0.039720867 75.166416 61.698327 6527.7597 3.4701208e+10 0.16576172 0.041268011 75.507533 61.479271 6529.9818 3.1378664e+10 0.17047664 0.043799754 75.847621 61.254917 6532.2040 2.8345913e+10 0.17376755 0.046854592 76.182612 61.028214 6534.4261 2.5617849e+10 0.17545607 0.048063760 76.510163 60.801509 6536.6483 2.3242976e+10 0.17606729 0.048370524 76.832834 60.574764 6538.8704 2.1070085e+10 0.17641232 0.049580527 77.154267 60.348031 6541.0926 1.9195708e+10 0.17554665 0.051296511 77.468129 60.121351 6543.3147 1.7339167e+10 0.17376091 0.051464490 77.773411 59.894609 6545.5369 1.5654216e+10 0.17145838 0.052460377 78.078564 59.667922 6547.7590 1.4350739e+10 0.16936792 0.053575998 78.336120 59.472966 6549.9811 1.3372102e+10 0.16749214 0.054966146 78.586821 59.277147 6552.2033 1.2569385e+10 0.16524992 0.055535598 78.874597 59.042739 6554.4254 1.1641680e+10 0.16273241 0.054841308 79.162304 58.816063 6556.6476 1.0656030e+10 0.16044703 0.053917918 79.450094 58.580833 6558.8697 9.8145806e+09 0.15775943 0.052498186 79.678719 58.390105 6561.0919 9.0884872e+09 0.15486714 0.051327405 79.919623 58.187502 6563.3140 8.5160497e+09 0.15230098 0.049565113 80.181516 57.963633 6565.5362 7.9585966e+09 0.14977557 0.047709569 80.390809 57.775273 6567.7583 7.4359254e+09 0.14780752 0.045976012 80.649656 57.555771 6569.9805 7.0168128e+09 0.14599746 0.044916237 80.874684 57.354602 6572.2026 6.5482154e+09 0.14392342 0.044114127 81.090759 57.155315 6574.4248 6.1581481e+09 0.14122786 0.042650997 81.347259 56.923932 6576.6469 5.7789765e+09 0.13855536 0.040626796 81.549573 56.735570 6578.8690 5.3988797e+09 0.13529910 0.037277287 81.779182 56.516505 6581.0912 5.0938888e+09 0.13229769 0.035568994 81.998664 56.304862 6583.3133 4.7388289e+09 0.12985645 0.034863068 82.196824 56.113177 6585.5355 4.4180427e+09 0.12704570 0.033542664 82.432285 55.877712 6587.7576 4.1233779e+09 0.12449610 0.033326232 82.624193 55.679357 6589.9798 3.8544244e+09 0.12142069 0.031102185 82.812532 55.487470 6592.2019 3.6585804e+09 0.11780254 0.027877396 83.000446 55.299152 6594.4241 3.4552486e+09 0.11472347 0.025939729 83.181831 55.110791 6596.6462 3.2341409e+09 0.11189712 0.025724336 83.391530 54.893029 6598.8684 3.0056131e+09 0.11021566 0.024992578 83.593264 54.676747 6601.0905 2.7978321e+09 0.11047486 0.027088315 83.767633 54.481760 6603.3127 2.6266236e+09 0.10958288 0.026478182 83.942041 54.293400 6605.5348 2.4864448e+09 0.10908725 0.027113700 84.116449 54.105039 6607.7569 2.3590405e+09 0.10729568 0.024212306 84.289615 53.915452 6609.9791 2.2453170e+09 0.10432884 0.023996769 84.457006 53.720159 6612.2012 2.1382364e+09 0.10201360 0.024170392 84.624426 53.530020 6614.4234 2.0155262e+09 0.10105935 0.023648795 84.802125 53.324369 6616.6455 1.8832474e+09 0.099748596 0.023383616 84.996159 53.089292 6618.8677 1.7579196e+09 0.099183324 0.024425997 85.156572 52.900976 6621.0898 1.6535090e+09 0.098409635 0.025059673 85.317018 52.707541 6623.3120 1.5679711e+09 0.096751332 0.024607407 85.477476 52.514268 6625.5341 1.4918159e+09 0.095293816 0.026034968 85.637934 52.325906 6627.7563 1.4183391e+09 0.093298030 0.025608944 85.792338 52.131570 6629.9784 1.3483100e+09 0.091840275 0.025932205 85.945793 51.936261 6632.2006 1.2799032e+09 0.089888134 0.026056394 86.099273 51.740925 6634.4227 1.2107961e+09 0.088245314 0.026357677 86.245808 51.552531 6636.6449 1.1523284e+09 0.086480547 0.026299331 86.378589 51.378545 6638.8670 1.1019551e+09 0.085016622 0.025633870 86.500669 51.215770 6641.0891 1.0575180e+09 0.085313980 0.025148603 86.643280 51.025626 6643.3113 1.0183649e+09 0.084568471 0.025239619 86.789765 50.833162 6645.5334 9.7254296e+08 0.083589238 0.025701579 86.936267 50.644802 6647.7556 9.2624174e+08 0.082762572 0.026835597 87.075969 50.449643 6649.9777 8.7957783e+08 0.082242805 0.026285938 87.215476 50.254333 6652.1999 8.3413637e+08 0.081930931 0.027305514 87.354971 50.059038 6654.4220 7.9254278e+08 0.081291185 0.027856441 87.494500 49.863700 6656.6442 7.4944140e+08 0.079633137 0.028588798 87.634026 49.673063 6658.8663 7.1043079e+08 0.078225733 0.031597501 87.766560 49.490856 6661.0885 6.8023340e+08 0.076978484 0.032580003 87.877015 49.328082 6663.3106 6.5669640e+08 0.075753539 0.032397136 87.998951 49.148390 6665.5328 6.3030735e+08 0.075419897 0.027674199 88.131475 48.953095 6667.7549 5.9859813e+08 0.074891518 0.027380745 88.264021 48.757756 6669.9770 5.6574981e+08 0.074333574 0.027352211 88.392013 48.566975 6672.1992 5.3658108e+08 0.074104861 0.026995053 88.512988 48.384236 6674.4213 5.1644885e+08 0.072992619 0.029310216 88.617629 48.221462 6676.6435 4.9410725e+08 0.070677516 0.032128445 88.732711 48.042446 6678.8656 4.7329804e+08 0.069812767 0.030357645 88.858257 47.847154 6681.0878 4.4981525e+08 0.070790943 0.029724698 88.983831 47.651818 6683.3099 4.2988156e+08 0.071259293 0.031642774 89.096168 47.477071 6685.5321 4.1396580e+08 0.070804871 0.033266832 89.200809 47.314295 6687.7542 4.0119585e+08 0.068462359 0.033922268 89.318154 47.121860 6689.9764 3.8484144e+08 0.066288890 0.033137144 89.436739 46.926548 6692.1985 3.6790600e+08 0.065234683 0.032534816 89.554450 46.732939 6694.4207 3.5577046e+08 0.064480389 0.030671460 89.653276 46.575977 6696.6428 3.3720402e+08 0.064359791 0.029942855 89.758524 46.406550 6698.8649 3.2426802e+08 0.063308562 0.031405053 89.877120 46.211212 6701.0871 3.0864244e+08 0.061645783 0.031537233 89.989477 46.015917 6703.3092 2.9442417e+08 0.061629292 0.034449045 90.092569 45.835508 6705.5314 2.8833187e+08 0.061799709 0.037613299 90.185580 45.672735 6707.7535 2.7462280e+08 0.061625239 0.040078884 90.292317 45.485946 6709.9757 2.6298382e+08 0.060701538 0.040511966 90.398282 45.300508 6712.1978 2.5467903e+08 0.058637025 0.042197248 90.491295 45.137733 6714.4200 2.4451580e+08 0.056661720 0.047334982 90.595158 44.955974 6716.6421 2.3905313e+08 0.054827636 0.049347136 90.705711 44.761725 6718.8643 2.2803365e+08 0.052569789 0.051158435 90.810351 44.573364 6721.0864 2.1999935e+08 0.053004371 0.050329934 90.906660 44.403341 6723.3086 2.1467696e+08 0.051804313 0.049541029 90.999676 44.240568 6725.5307 2.1076809e+08 0.047700470 0.041244517 91.104282 44.045343 6727.7528 2.0791034e+08 0.046695201 0.039957380 91.199105 43.868341 6729.9750 2.0235267e+08 0.045576749 0.040395570 91.286306 43.705568 6732.1971 1.9515198e+08 0.044017217 0.043776502 91.382310 43.515386 6734.4193 1.8395061e+08 0.043560204 0.049328372 91.482818 43.320076 6736.6414 1.7544463e+08 0.045428159 0.052779973 91.587459 43.124735 6738.8636 1.7117499e+08 0.046371046 0.062075480 91.669414 42.961172 6741.0857 1.6890926e+08 0.045252859 0.066003178 91.756741 42.791871 6743.3079 1.6721811e+08 0.041329688 0.073124319 91.861356 42.603555 6745.5300 1.5957811e+08 0.038936358 0.078789701 91.946882 42.436230 6747.7522 1.5334639e+08 0.034789182 0.067102221 92.029924 42.270147 6749.9743 1.4789627e+08 0.032394944 0.072011166 92.127597 42.074808 6752.1965 1.3933057e+08 0.029697732 0.073907142 92.210502 41.901230 6754.4186 1.3205673e+08 0.028483700 0.075540309 92.286074 41.738457 6756.6407 1.2417851e+08 0.025863602 0.075815645 92.382573 41.544855 6758.8629 1.1875742e+08 0.026461053 0.075530024 92.471857 41.366287 6761.0850 1.1153812e+08 0.027176217 0.077975251 92.553244 41.203511 6763.3072 1.0482890e+08 0.032512598 0.077373305 92.642018 41.014879 6765.5293 97836636. 0.034807687 0.079627825 92.732710 40.822058 6767.7515 91359913. 0.032888966 0.081134305 92.823406 40.633698 6769.9736 86955653. 0.028142065 0.086815728 92.900078 40.469063 6772.1958 82432644. 0.024152309 0.092205410 92.978776 40.299556 6774.4179 80988872. 0.020153584 0.097595091 93.069445 40.104267 6776.6401 78688160. 0.016163649 0.10298477 93.148442 39.934121 6778.8622 73007950. 0.012178915 0.10837445 93.224822 39.769985 6781.0844 67974581. 0.0081882482 0.11376414 93.315513 39.581623 6783.3065 64038528. 0.0041933795 0.11915382 93.393234 39.409119 6785.5286 61670151. 0.00019633048 0.12454350 93.462996 39.246346 6787.7508 62351057. -0.0037979476 0.12993318 93.545289 39.054322 6789.9729 62273037. -0.0078195946 0.13532286 93.632243 38.859009 6792.1951 61813318. -0.011895768 0.14071254 93.722261 38.664726 6794.4172 61876606. -0.016069047 0.14610223 93.792018 38.501952 6796.6394 60021509. -0.020949258 0.15149191 93.866134 38.331190 6798.8615 56722383. -0.030748664 0.15688159 93.949852 38.142829 6801.0837 55057950. -0.029688783 0.16227127 94.021293 37.976983 6803.3058 50882418. -0.022574859 0.16766095 94.092148 37.809083