# # 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 = 44.404725 km # Date (UTC) = 2013-11-27T09:33:19.872 # Date (julian) = 2456623.89814666 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6495.5537 7.7623070e+10 0.041392257 0.030942454 -20.117558 57.131839 6497.7292 7.0725419e+10 0.047949565 0.031598448 -20.270082 57.033661 6499.9046 6.4989196e+10 0.054160514 0.032254443 -20.419468 56.935494 6502.0800 5.9506252e+10 0.060140690 0.032910437 -20.568853 56.837327 6504.2555 5.4591990e+10 0.066024146 0.033566432 -20.718239 56.735209 6506.4309 5.0398005e+10 0.072033361 0.034222426 -20.867625 56.632772 6508.6063 4.6664089e+10 0.078333642 0.034878421 -21.017010 56.532823 6510.7817 4.3137651e+10 0.085122015 0.035534415 -21.166395 56.434655 6512.9572 3.9730675e+10 0.092538971 0.036190410 -21.314758 56.336488 6515.1326 3.6458715e+10 0.10072389 0.036846405 -21.459876 56.238321 6517.3080 3.3529222e+10 0.10992830 0.037502399 -21.604993 56.140153 6519.4835 3.0974057e+10 0.12028554 0.038158394 -21.746283 56.038159 6521.6589 2.8685821e+10 0.13183415 0.038814388 -21.887132 55.935722 6523.8343 2.6521655e+10 0.13914170 0.039385895 -22.030344 55.835650 6526.0097 2.4464156e+10 0.14528134 0.039678297 -22.175461 55.737483 6528.1852 2.2577288e+10 0.15301445 0.041589377 -22.318779 55.638416 6530.3606 2.0912267e+10 0.15978686 0.044333523 -22.455360 55.535979 6532.5360 1.9408015e+10 0.16625323 0.047131982 -22.591941 55.433543 6534.7115 1.7998291e+10 0.17016970 0.048143578 -22.728522 55.331108 6536.8869 1.6696107e+10 0.17161685 0.048584014 -22.865102 55.228673 6539.0623 1.5501282e+10 0.17124692 0.049719049 -23.001694 55.126230 6541.2377 1.4425639e+10 0.16961765 0.051249433 -23.138295 55.023778 6543.4132 1.3432440e+10 0.16776555 0.051490330 -23.274115 54.922107 6545.5886 1.2509446e+10 0.16599308 0.052460840 -23.406427 54.823940 6547.7640 1.1634897e+10 0.16473283 0.053577906 -23.538739 54.725773 6549.9394 1.0811415e+10 0.16363983 0.054923650 -23.671053 54.624024 6552.1149 1.0037278e+10 0.16227134 0.055557853 -23.803366 54.521589 6554.2903 9.2888734e+09 0.16045282 0.054838472 -23.933560 54.419153 6556.4657 8.5840061e+09 0.15890532 0.053944655 -24.061604 54.316717 6558.6412 7.9362163e+09 0.15718555 0.052692959 -24.189648 54.214281 6560.8166 7.3475212e+09 0.15503603 0.051538052 -24.317692 54.111847 6562.9920 6.8173613e+09 0.15326732 0.049935966 -24.445736 54.009412 6565.1674 6.3444957e+09 0.15149747 0.048128265 -24.573781 53.906976 6567.3429 5.9012860e+09 0.14993554 0.046327282 -24.701826 53.804539 6569.5183 5.4925044e+09 0.14850860 0.044886158 -24.827875 53.702103 6571.6937 5.1124644e+09 0.14716698 0.044313805 -24.951651 53.599667 6573.8692 4.7763263e+09 0.14492805 0.042960007 -25.074895 53.497231 6576.0446 4.4622258e+09 0.14267455 0.041320080 -25.194404 53.394796 6578.2200 4.1634167e+09 0.14010778 0.038302194 -25.313913 53.292361 6580.3954 3.8925318e+09 0.13717550 0.036155312 -25.426016 53.198814 6582.5709 3.6650845e+09 0.13454893 0.035138446 -25.536052 53.107749 6584.7463 3.4750048e+09 0.13216076 0.034108977 -25.647473 53.014398 6586.9217 3.2961600e+09 0.13017278 0.033159381 -25.766981 52.907694 6589.0971 3.1153376e+09 0.12853359 0.032853243 -25.886490 52.800990 6591.2726 2.9362586e+09 0.12646776 0.028894339 -26.002570 52.697715 6593.4480 2.7782176e+09 0.12457625 0.026685712 -26.117810 52.595281 6595.6234 2.6285271e+09 0.12217009 0.025688223 -26.233050 52.492845 6597.7989 2.4887983e+09 0.12025007 0.025470637 -26.348291 52.390409 6599.9743 2.3561796e+09 0.11948901 0.024988329 -26.463531 52.287972 6602.1497 2.2181374e+09 0.11902205 0.027388871 -26.578770 52.185538 6604.3251 2.0889489e+09 0.11776624 0.026264336 -26.694010 52.083103 6606.5006 1.9730145e+09 0.11707518 0.026604451 -26.809249 51.977362 6608.6760 1.8668818e+09 0.11423142 0.023714498 -26.924490 51.870659 6610.8514 1.7737496e+09 0.11101033 0.024816499 -27.037888 51.765797 6613.0269 1.6811404e+09 0.10964010 0.023583444 -27.148860 51.663360 6615.2023 1.5896745e+09 0.10808353 0.023257755 -27.259832 51.560924 6617.3777 1.5031195e+09 0.10657864 0.023564478 -27.370804 51.458489 6619.5531 1.4214162e+09 0.10552268 0.024659378 -27.481776 51.356055 6621.7286 1.3406484e+09 0.10406139 0.024847960 -27.589577 51.250425 6623.9040 1.2665474e+09 0.10173146 0.024826742 -27.696297 51.143705 6626.0794 1.2019457e+09 0.10001705 0.026489711 -27.803011 51.038712 6628.2549 1.1416306e+09 0.097701480 0.025806567 -27.909714 50.936275 6630.4303 1.0836068e+09 0.095575105 0.025929362 -28.016418 50.833582 6632.6057 1.0243578e+09 0.093649584 0.026104974 -28.123122 50.726879 6634.7811 9.6900488e+08 0.092083581 0.026383822 -28.229825 50.620175 6636.9566 9.1913135e+08 0.090662594 0.026178280 -28.333468 50.516532 6639.1320 8.7289370e+08 0.089870440 0.025580898 -28.435903 50.414096 6641.3074 8.3076596e+08 0.090598810 0.025149344 -28.538339 50.310062 6643.4828 7.8939576e+08 0.090004745 0.025265522 -28.640775 50.203358 6645.6583 7.5270360e+08 0.089004763 0.025760062 -28.743211 50.096788 6647.8337 7.1545543e+08 0.087986879 0.026876728 -28.845646 49.994353 6650.0091 6.7746692e+08 0.087220020 0.026257327 -28.948081 49.891919 6652.1846 6.4555702e+08 0.086557417 0.027301301 -29.050517 49.786545 6654.3600 6.1123330e+08 0.085652779 0.027882868 -29.152952 49.679842 6656.5354 5.7892780e+08 0.083689677 0.028493348 -29.253913 49.574612 6658.7108 5.5238683e+08 0.081928143 0.031321773 -29.352081 49.472176 6660.8863 5.2369774e+08 0.080361512 0.032431575 -29.450249 49.369729 6663.0617 5.0189931e+08 0.078840524 0.032466114 -29.548417 49.263025 6665.2371 4.7745230e+08 0.077962159 0.028158590 -29.646585 49.156320 6667.4126 4.5377956e+08 0.077085590 0.027254996 -29.754004 49.039560 6669.5880 4.2969355e+08 0.075824240 0.027751804 -29.866197 48.917611 6671.7634 4.0814001e+08 0.075273482 0.026876228 -29.967247 48.807548 6673.9388 3.8603117e+08 0.074068218 0.028863319 -30.061160 48.705098 6676.1143 3.6478478e+08 0.071301446 0.031787368 -30.155070 48.601512 6678.2897 3.4701669e+08 0.069784309 0.030742854 -30.248969 48.494809 6680.4651 3.2955684e+08 0.069753753 0.029541856 -30.342869 48.388105 6682.6405 3.1486206e+08 0.069999331 0.030913947 -30.436768 48.285345 6684.8160 3.0213042e+08 0.069595620 0.032695499 -30.530667 48.182908 6686.9914 2.8823062e+08 0.067674483 0.034337900 -30.624566 48.077992 6689.1668 2.7418845e+08 0.064565487 0.033865847 -30.718467 47.971288 6691.3423 2.6397191e+08 0.063217800 0.032920512 -30.811350 47.864584 6693.5177 2.5083997e+08 0.061841351 0.031426489 -30.900981 47.757880 6695.6931 2.3842806e+08 0.061017878 0.029732156 -30.990611 47.651176 6697.8685 2.2636676e+08 0.059742255 0.030201181 -31.080242 47.548295 6700.0440 2.1769122e+08 0.057626241 0.030700335 -31.169873 47.445860 6702.2194 2.1180661e+08 0.055592340 0.033051923 -31.266577 47.332647 6704.3948 2.0179365e+08 0.055364804 0.036371435 -31.369015 47.210698 6706.5703 1.8907501e+08 0.054566044 0.039438892 -31.462877 47.096405 6708.7457 1.7787569e+08 0.053438055 0.040855603 -31.548241 46.989701 6710.9211 1.6912378e+08 0.051276532 0.040676791 -31.634285 46.882997 6713.0965 1.6460222e+08 0.048893044 0.044035792 -31.723915 46.776293 6715.2720 1.5842161e+08 0.046535296 0.047656750 -31.813546 46.669590 6717.4474 1.4882098e+08 0.043991521 0.049846595 -31.899692 46.566370 6719.6228 1.4360231e+08 0.042086380 0.050778110 -31.985054 46.463934 6721.7983 1.3942815e+08 0.042182163 0.050544416 -32.076192 46.352258 6723.9737 1.3418088e+08 0.040134218 0.049911982 -32.173752 46.230309 6726.1491 1.2990152e+08 0.036256149 0.040952712 -32.264345 46.114809 6728.3245 1.2193795e+08 0.035466908 0.040088074 -32.345451 46.008089 6730.5000 1.1346663e+08 0.033815082 0.041064415 -32.426902 45.901371 6732.6754 1.0998083e+08 0.032731287 0.043864546 -32.512265 45.794666 6734.8508 1.0571178e+08 0.032847581 0.049302408 -32.597629 45.687962 6737.0262 1.0318186e+08 0.034902397 0.054219179 -32.688394 45.573607 6739.2017 1.0230713e+08 0.035909800 0.063073365 -32.781077 45.456534 6741.3771 92483712. 0.033965617 0.066834213 -32.865788 45.346595 6743.5525 88850320. 0.029586432 0.074774804 -32.946882 45.239891 6745.7280 82010532. 0.026782275 0.078872915 -33.031973 45.127928 6747.9034 76144466. 0.021217858 0.067050159 -33.124654 45.005978 6750.0788 70812630. 0.016156015 0.072138713 -33.212659 44.888526 6752.2542 61845194. 0.0076889817 0.073840269 -33.289486 44.781822 6754.4297 57123772. -0.0050738264 0.075522506 -33.366312 44.675118 6756.6051 56173877. -0.068508670 0.075723919 -33.458235 44.558544 6758.7805 56305484. -0.017427559 0.075355851 -33.550919 44.441473 6760.9560 56349519. 0.089936154 0.077884234 -33.629299 44.333753