# # 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 = 51.361433 km # Date (UTC) = 2015-11-29T10:43:10.782 # Date (julian) = 2457355.94665256 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6504.0768 6.5947009e+10 0.061910069 0.033512566 95.578392 26.370556 6506.2813 6.1888213e+10 0.072084668 0.034177319 95.625099 26.258109 6508.4858 5.7636749e+10 0.082505372 0.034842072 95.676999 26.137004 6510.6902 5.3422264e+10 0.093184717 0.035506824 95.728898 26.015900 6512.8947 4.8874201e+10 0.10397931 0.036171577 95.780800 25.894796 6515.0992 4.4730221e+10 0.11505829 0.036836330 95.832703 25.773692 6517.3037 4.1006611e+10 0.12645054 0.037501083 95.881872 25.658968 6519.5081 3.8093968e+10 0.13834465 0.038165836 95.928007 25.551323 6521.7126 3.5605751e+10 0.15062599 0.038830589 95.974142 25.443677 6523.9171 3.3153410e+10 0.15753773 0.039406409 96.021532 25.324283 6526.1216 3.0543253e+10 0.16268472 0.039795521 96.069106 25.203179 6528.3260 2.7834684e+10 0.16811910 0.041701120 96.119108 25.082075 6530.5305 2.5339375e+10 0.17201675 0.044571384 96.171010 24.960972 6532.7350 2.3085819e+10 0.17556620 0.047298182 96.222913 24.839868 6534.9394 2.1011547e+10 0.17728017 0.048207356 96.274816 24.718764 6537.1439 1.9108718e+10 0.17756466 0.048753076 96.326719 24.597660 6539.3484 1.7546859e+10 0.17735766 0.050065343 96.369622 24.489149 6541.5529 1.6273372e+10 0.17584823 0.051147241 96.411917 24.381489 6543.7573 1.5149338e+10 0.17353019 0.051580659 96.455987 24.269311 6545.9618 1.4026582e+10 0.17076589 0.052464184 96.503564 24.148208 6548.1663 1.2829883e+10 0.16901190 0.053717302 96.551244 24.027105 6550.3708 1.1640805e+10 0.16709290 0.055078192 96.603144 23.906001 6552.5752 1.0593984e+10 0.16517544 0.055441983 96.655043 23.784897 6554.7797 9.7241973e+09 0.16300188 0.054848742 96.700102 23.673372 6556.9842 9.0544453e+09 0.16059028 0.053868435 96.742392 23.565726 6559.1886 8.5126320e+09 0.15757367 0.052365889 96.785267 23.456590 6561.3931 7.9591225e+09 0.15468093 0.051178963 96.832844 23.335487 6563.5976 7.3874898e+09 0.15188421 0.049237098 96.880420 23.214383 6565.8021 6.7900979e+09 0.14948513 0.047407649 96.927997 23.093279 6568.0065 6.2490119e+09 0.14786256 0.045765659 96.975574 22.972175 6570.2110 5.7882241e+09 0.14623224 0.044830104 97.020581 22.857613 6572.4155 5.4141987e+09 0.14421395 0.043992223 97.062876 22.749952 6574.6199 5.1107603e+09 0.14164166 0.042557246 97.105171 22.642292 6576.8244 4.8274287e+09 0.13893830 0.040422468 97.152145 22.526555 6579.0289 4.5493056e+09 0.13560889 0.037054614 97.199722 22.409777 6581.2334 4.2608444e+09 0.13291758 0.035525943 97.244817 22.290516 6583.4378 3.9803475e+09 0.13047616 0.034800052 97.288067 22.169413 6585.6423 3.7212316e+09 0.12775737 0.033457260 97.331066 22.051830 6587.8468 3.5056417e+09 0.12532914 0.033345984 97.373356 21.944184 6590.0513 3.3219307e+09 0.12224113 0.030966724 97.415646 21.836537 6592.2557 3.1642253e+09 0.11876972 0.027825136 97.461428 21.722859 6594.4602 3.0045409e+09 0.11576496 0.025919895 97.509005 21.606081 6596.6647 2.8364093e+09 0.11293168 0.025724252 97.555074 21.487795 6598.8691 2.6634188e+09 0.11121223 0.024992204 97.598325 21.366691 6601.0736 2.4962981e+09 0.11143535 0.027080360 97.641541 21.246077 6603.2781 2.3559637e+09 0.11054164 0.026498644 97.683836 21.138416 6605.4826 2.2355830e+09 0.11003831 0.027069876 97.726131 21.030756 6607.6870 2.1369459e+09 0.10826325 0.024350357 97.768843 20.919123 6609.8915 2.0359581e+09 0.10533788 0.023970752 97.812093 20.802345 6612.0960 1.9255301e+09 0.10305452 0.024249038 97.855879 20.685033 6614.3005 1.8099991e+09 0.10221307 0.023733491 97.903456 20.563928 6616.5049 1.6923368e+09 0.10094290 0.023361547 97.951032 20.442824 6618.7094 1.5993208e+09 0.10034074 0.024306476 97.991198 20.335762 6620.9139 1.5269197e+09 0.099491421 0.025061692 98.029642 20.231960 6623.1183 1.4718722e+09 0.097806774 0.024535671 98.069099 20.124518 6625.3228 1.4181303e+09 0.096196770 0.025782821 98.112353 20.003414 6627.5273 1.3511648e+09 0.094117363 0.025520494 98.155607 19.882311 6629.7318 1.2794021e+09 0.092781482 0.025976800 98.202741 19.765093 6631.9362 1.2140702e+09 0.090845855 0.026025868 98.250315 19.648314 6634.1407 1.1496683e+09 0.089194180 0.026337106 98.295356 19.528999 6636.3452 1.0869040e+09 0.087537973 0.026415706 98.338610 19.407896 6638.5497 1.0315856e+09 0.086221461 0.025647695 98.380546 19.291532 6640.7541 9.7881778e+08 0.086366010 0.025178384 98.418996 19.187716 6642.9586 9.3928868e+08 0.085895851 0.025190924 98.457445 19.083900 6645.1631 9.0435787e+08 0.084854808 0.025528076 98.499128 18.971355 6647.3675 8.6334643e+08 0.083890033 0.026631292 98.542379 18.854577 6649.5720 8.1862624e+08 0.083206974 0.026845194 98.585630 18.736236 6651.7765 7.7493008e+08 0.083009068 0.027079230 98.628880 18.615132 6653.9810 7.3717891e+08 0.082574265 0.028026504 98.672131 18.494241 6656.1854 7.0713811e+08 0.080925163 0.028186170 98.715382 18.377463 6658.3899 6.8099598e+08 0.079527299 0.030752582 98.758632 18.260684 6660.5944 6.5279663e+08 0.078215740 0.032166258 98.798342 18.153472 6662.7988 6.2360356e+08 0.077043351 0.032596070 98.836789 18.049670 6665.0033 5.9317087e+08 0.076497267 0.028541687 98.875302 17.944102 6667.2078 5.6667066e+08 0.076111577 0.027179784 98.914226 17.827324 6669.4123 5.4211068e+08 0.075146608 0.027932276 98.953151 17.710546 6671.6167 5.2074876e+08 0.075117221 0.026874137 98.995640 17.593767 6673.8212 4.9949837e+08 0.074416094 0.028687400 99.038891 17.476989 6676.0257 4.7280594e+08 0.072221515 0.031730278 99.082147 17.360201 6678.2302 4.4782404e+08 0.071275438 0.030782675 99.125407 17.243405 6680.4346 4.2504045e+08 0.071741314 0.029535271 99.167799 17.125746 6682.6391 4.0407516e+08 0.072445639 0.030912841 99.206724 17.004643 6684.8436 3.8674082e+08 0.072376489 0.032696900 99.245648 16.883540 6687.0480 3.7018303e+08 0.070682340 0.034316104 99.288416 16.766277 6689.2525 3.4924621e+08 0.068029778 0.033788716 99.331666 16.649498 6691.4570 3.3081080e+08 0.067161340 0.032893443 99.374917 16.532719 6693.6615 3.1295163e+08 0.066375479 0.031377165 99.418168 16.415940 6695.8659 2.9727664e+08 0.066344509 0.029700411 99.459135 16.302588 6698.0704 2.8680199e+08 0.065713940 0.030314463 99.493737 16.198787 6700.2749 2.7539279e+08 0.064208500 0.030871606 99.528339 16.094985 6702.4794 2.6528531e+08 0.063191572 0.033259497 99.568674 15.982580 6704.6838 2.5622597e+08 0.063614255 0.036513349 99.611925 15.865802 6706.8883 2.4733765e+08 0.063435260 0.039992421 99.653659 15.750541 6709.0928 2.4005769e+08 0.062889133 0.041073535 99.692587 15.638087 6711.2972 2.2908152e+08 0.061183498 0.041030416 99.731515 15.525465 6713.5017 2.1905509e+08 0.059154532 0.045501228 99.770439 15.408687 6715.7062 2.0930707e+08 0.057350863 0.048100859 99.809364 15.291908 6717.9107 2.0050707e+08 0.055293078 0.049817940 99.851437 15.175117 6720.1151 1.9126533e+08 0.054191554 0.050406426 99.894694 15.058321 6722.3196 1.8504480e+08 0.053957776 0.050210086 99.936155 14.941532 6724.5241 1.8007284e+08 0.050652060 0.045550256 99.975083 14.824754 6726.7286 1.7539150e+08 0.047790191 0.040957938 100.01458 14.706257 6728.9330 1.6715720e+08 0.047327076 0.040950502 100.05907 14.572793 6731.1375 1.5570725e+08 0.045457104 0.042023671 100.10311 14.441009 6733.3420 1.4904675e+08 0.044115719 0.045780963 100.14204 14.328555 6735.5464 1.4247371e+08 0.044749575 0.049873522 100.18097 14.216100 6737.7509 1.3688189e+08 0.046041346 0.056527625 100.21989 14.100326 6739.9554 1.3266402e+08 0.045829925 0.063995765 100.25882 13.983547 6742.1599 1.2401457e+08 0.043321838 0.069000280 100.29774 13.866769 6744.3643 1.1799172e+08 0.038719203 0.078075214 100.33667 13.749990 6746.5688 1.1420112e+08 0.035396057 0.072374280 100.37560 13.633833 6748.7733 1.1028223e+08 0.033554535 0.071085141 100.41452 13.521380 6750.9778 1.1237415e+08 0.030533625 0.073673679 100.45345 13.408927 6753.1822 1.0808718e+08 0.027494242 0.073566996 100.49238 13.292877 6755.3867 1.0528386e+08 0.025230655 0.074435804 100.53130 13.176098 6757.5912 1.0551062e+08 0.023372260 0.074946019 100.57312 13.050649 6759.7956 1.0267739e+08 0.023995551 0.076011956 100.61761 12.917184 6762.0001 98098319. 0.027393607 0.078050662 100.65933 12.794154 6764.2046 90498720. 0.030117711 0.079493087 100.69826 12.681701 6766.4091 85839989. 0.030908333 0.080639044 100.73719 12.568449 6768.6135 84010663. 0.026622697 0.083063653 100.77611 12.451670 6770.8180 85579251. 0.022225755 0.088863718 100.81504 12.334892 6773.0225 82917157. 0.017877661 0.094210533 100.85397 12.221872 6775.2269 79125647. 0.013380412 0.099557348 100.89290 12.109402 6777.4314 76667369. 0.0088251933 0.10490416 100.93495 11.985160 6779.6359 74499730. 0.0040681401 0.11025098 100.97944 11.851695 6781.8404 69879283. -0.0013508771 0.11559779 101.02093 11.729529 6784.0448 62766275. -0.0081775517 0.12094461 101.05986 11.617075 6786.2493 56792515. -0.018244431 0.12629142 101.09892 11.500995 6788.4538 51807942. -0.056159700 0.13163824 101.13847 11.372474 6790.6583 48793823. -0.034230413 0.13698505 101.17789 11.246334 6792.8627 44928942. 0.027032669 0.14233187 101.21682 11.129555