# # 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 = 45.247940 km # Date (UTC) = 2011-01-04T07:22:44.660 # Date (julian) = 2455565.80746134 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6516.5325 4.1176527e+10 0.13296950 0.037268528 139.88397 40.651739 6519.1741 3.6871733e+10 0.14597234 0.038065111 139.98243 40.511800 6521.8158 3.2647952e+10 0.15904747 0.038861695 140.07445 40.380237 6524.4574 2.9437951e+10 0.16577207 0.039589459 140.15737 40.260456 6527.0991 2.6564178e+10 0.17099477 0.040788392 140.24284 40.137010 6529.7407 2.4020960e+10 0.17444809 0.043415681 140.33613 40.002256 6532.3824 2.1484068e+10 0.17697295 0.047003620 140.42942 39.865867 6535.0240 1.9051735e+10 0.17770120 0.048213876 140.52271 39.725929 6537.6657 1.7004410e+10 0.17709145 0.048999060 140.61200 39.593772 6540.3073 1.5314304e+10 0.17672106 0.050999290 140.69493 39.473992 6542.9490 1.3903411e+10 0.17481569 0.051362522 140.78008 39.349868 6545.5906 1.2670335e+10 0.17301410 0.052460858 140.87339 39.209910 6548.2323 1.1413247e+10 0.17150906 0.053737012 140.96521 39.071440 6550.8739 1.0256636e+10 0.16945462 0.055204184 141.05332 38.936684 6553.5156 9.2434571e+09 0.16728741 0.055075891 141.13794 38.807271 6556.1572 8.4017481e+09 0.16374709 0.053990009 141.21625 38.687492 6558.7989 7.7095445e+09 0.15944463 0.052558556 141.29639 38.563961 6561.4405 7.0651866e+09 0.15379276 0.051155594 141.38450 38.424024 6564.0822 6.4367301e+09 0.14775892 0.048734350 141.47010 38.289260 6566.7238 5.9056976e+09 0.14308193 0.046773410 141.54841 38.169480 6569.3655 5.4371592e+09 0.13946366 0.044876212 141.62757 38.047967 6572.0071 5.0074651e+09 0.13725291 0.044226065 141.71568 37.908030 6574.6488 4.6135786e+09 0.13448745 0.042543391 141.80154 37.771245 6577.2904 4.2320747e+09 0.13169554 0.039764152 141.87526 37.651448 6579.9321 3.9283996e+09 0.12859830 0.036558082 141.94898 37.531651 6582.5737 3.6518238e+09 0.12577545 0.035137661 142.03689 37.397104 6585.2154 3.3660503e+09 0.12324707 0.033798565 142.12470 37.262056 6587.8571 3.0786593e+09 0.12101043 0.033348259 142.20763 37.122118 6590.4987 2.8047791e+09 0.11824475 0.030134399 142.28939 36.984747 6593.1404 2.5919640e+09 0.11527553 0.026971732 142.36310 36.864968 6595.7820 2.4162804e+09 0.11166449 0.025704667 142.43681 36.745189 6598.4237 2.2568316e+09 0.10882259 0.025204896 142.51934 36.611081 6601.0653 2.0934573e+09 0.10791980 0.027076447 142.60202 36.476733 6603.7070 1.9407600e+09 0.10598981 0.026244754 142.67573 36.356938 6606.3486 1.8180954e+09 0.10462418 0.026877515 142.74945 36.237143 6608.9903 1.7035552e+09 0.10060595 0.023706189 142.82662 36.100088 6611.6319 1.6008296e+09 0.096755241 0.024555479 142.90436 35.960150 6614.2736 1.4797448e+09 0.094942017 0.023752014 142.98692 35.825019 6616.9152 1.3708914e+09 0.092700129 0.023425943 143.06984 35.690263 6619.5569 1.2832753e+09 0.091184210 0.024660278 143.13897 35.570454 6622.1985 1.1970113e+09 0.089257845 0.024705152 143.20807 35.450675 6624.8402 1.1327023e+09 0.087091856 0.025312051 143.28432 35.318504 6627.4818 1.0619445e+09 0.085074449 0.025502933 143.36206 35.183748 6630.1235 9.9059080e+08 0.084105208 0.025928606 143.43981 35.044341 6632.7651 9.2182825e+08 0.082784028 0.026124090 143.51756 34.904405 6635.4068 8.5970849e+08 0.081521692 0.026460791 143.58693 34.783990 6638.0484 8.0605864e+08 0.080560778 0.025669532 143.65603 34.664210 6640.6901 7.5824025e+08 0.081010387 0.025186219 143.73204 34.532466 6643.3317 7.1833547e+08 0.080807477 0.025242707 143.80980 34.397691 6645.9734 6.6637131e+08 0.079926416 0.025907680 143.88754 34.262933 6648.6150 6.1891341e+08 0.078992380 0.027375994 143.96528 34.128177 6651.2567 5.8103997e+08 0.078682426 0.026680882 144.03058 34.007489 6653.8983 5.4458648e+08 0.078261643 0.027984323 144.09508 33.887710 6656.5400 5.2201521e+08 0.076273636 0.028497368 144.16976 33.756419 6659.1816 4.9450340e+08 0.074573402 0.031796707 144.24750 33.621664 6661.8233 4.6826505e+08 0.073100029 0.032954273 144.32089 33.486909 6664.4649 4.3470582e+08 0.072088842 0.030504857 144.39345 33.352154 6667.1066 4.0252616e+08 0.072060937 0.027142614 144.45867 33.231025 6669.7483 3.7430925e+08 0.071298371 0.027587195 144.52317 33.111246 6672.3899 3.5145147e+08 0.071166084 0.027105595 144.59363 32.980382 6675.0316 3.3896716e+08 0.069540596 0.029858798 144.66620 32.845606 6677.6732 3.2350846e+08 0.067385766 0.031401183 144.73877 32.706649 6680.3149 3.0486653e+08 0.067685452 0.029509408 144.81134 32.566711 6682.9565 2.8529276e+08 0.068673258 0.031155354 144.88390 32.431339 6685.5982 2.6901268e+08 0.068472792 0.033336645 144.95646 32.296585 6688.2398 2.5564387e+08 0.065865177 0.033840548 145.02902 32.161829 6690.8815 2.4458411e+08 0.064073395 0.033014847 145.10131 32.027498 6693.5231 2.3603662e+08 0.062945904 0.031424627 145.16119 31.912326 6696.1648 2.2189083e+08 0.062563114 0.029744244 145.22108 31.797154 6698.8064 2.1237913e+08 0.061116791 0.031324722 145.29175 31.665315 6701.4481 2.0143826e+08 0.058829125 0.032066895 145.36431 31.530561 6704.0897 1.9118164e+08 0.058593164 0.036221612 145.43209 31.395806 6706.7314 1.8267788e+08 0.058072286 0.039719306 145.49947 31.261051 6709.3730 1.7068904e+08 0.056822089 0.040895280 145.56685 31.126296 6712.0147 1.6406568e+08 0.053883431 0.041857212 145.63423 30.991539 6714.6563 1.5149100e+08 0.050841900 0.047352751 145.70162 30.856765 6717.2980 1.4212715e+08 0.047717807 0.049855837 145.76900 30.721992 6719.9396 1.3334365e+08 0.045172578 0.050477119 145.83638 30.587238 6722.5813 1.2504174e+08 0.043933558 0.049886584 145.90376 30.452483 6725.2229 1.2104851e+08 0.038531497 0.041436762 145.97114 30.317729 6727.8646 1.1389682e+08 0.036233271 0.039808507 146.03852 30.182974 6730.5062 1.0428505e+08 0.033355419 0.041073019 146.10589 30.048219 6733.1479 97554850. 0.030600155 0.044727253 146.17326 29.913465 6735.7895 89988675. 0.030057755 0.050131591 146.24064 29.778710 6738.4312 90203508. 0.030969649 0.059695017 146.30586 29.646111 6741.0728 86571809. 0.028854787 0.065966453 146.36806 29.516540 6743.7145 75548546. 0.021267410 0.075867424 146.43277 29.384447 6746.3561 67184526. 0.015241143 0.074846639 146.50015 29.249692 6748.9978 62215368. 0.0098134417 0.072266366 146.56464 29.114937 6751.6395 63938158. 0.0040065426 0.073982035 146.62683 28.980183 6754.2811 58652431. -0.0042929918 0.075761420 146.69228 28.848680 6756.9228 57578252. -0.017716701 0.076541297 146.75966 28.719108 6759.5644 56620680. -0.080154472 0.075956155 146.82343 28.585903 6762.2061 54789823. -0.021405139 0.077718454 146.88563 28.451129 6764.8477 49319574. 0.10773882 0.079523897 146.95466 28.301562