# # 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 = 60.913151 km # Date (UTC) = 2011-12-22T05:23:05.707 # Date (julian) = 2455917.72437161 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6505.1582 9.6170945e+10 0.069783524 0.033838638 172.10961 34.492719 6507.6479 8.3345262e+10 0.080583327 0.034589414 172.17473 34.375486 6510.1376 7.2306053e+10 0.091562289 0.035340189 172.23986 34.258253 6512.6274 6.3304655e+10 0.10284151 0.036090965 172.30867 34.144672 6515.1171 5.5903619e+10 0.11448605 0.036841740 172.37815 34.031764 6517.6069 4.9554768e+10 0.12649555 0.037592515 172.44763 33.916514 6520.0966 4.4222085e+10 0.13894869 0.038343291 172.51710 33.799279 6522.5864 3.9357337e+10 0.15009965 0.039070796 172.58748 33.678550 6525.0761 3.4755321e+10 0.15663450 0.039773529 172.66075 33.546660 6527.5658 3.0616213e+10 0.16095879 0.041127282 172.73246 33.418404 6530.0556 2.7043956e+10 0.16515194 0.043906519 172.79759 33.305512 6532.5453 2.4277494e+10 0.16815040 0.047139759 172.86271 33.192621 6535.0351 2.1996568e+10 0.17004873 0.048209081 172.92786 33.075858 6537.5248 2.0025919e+10 0.17077351 0.048932654 172.99300 32.958609 6540.0146 1.8294749e+10 0.17199494 0.050860981 173.05813 32.841368 6542.5043 1.6755062e+10 0.17094691 0.051193700 173.12326 32.724134 6544.9940 1.5400444e+10 0.17059946 0.052450737 173.18839 32.608126 6547.4838 1.4188256e+10 0.16886201 0.053471341 173.25352 32.495235 6549.9735 1.3117756e+10 0.16714317 0.054958387 173.31866 32.382343 6552.4633 1.2157020e+10 0.16465445 0.055470160 173.38378 32.265199 6554.9530 1.1267923e+10 0.16217404 0.054852379 173.44891 32.147965 6557.4428 1.0449312e+10 0.15944892 0.053588583 173.51111 32.030720 6559.9325 9.6882000e+09 0.15674045 0.052281927 173.57191 31.913471 6562.4222 9.0042952e+09 0.15360598 0.050478119 173.63432 31.797848 6564.9120 8.4258350e+09 0.15098118 0.048358283 173.69945 31.684956 6567.4017 7.8750539e+09 0.14874631 0.046277512 173.76480 31.570728 6569.8915 7.3037150e+09 0.14717982 0.044910446 173.83319 31.438837 6572.3812 6.7406120e+09 0.14546297 0.044011841 173.90140 31.307387 6574.8710 6.2262528e+09 0.14344497 0.042436684 173.96219 31.194494 6577.3607 5.8022341e+09 0.14101442 0.039653792 174.02298 31.081602 6579.8504 5.4539243e+09 0.13835747 0.036602968 174.08376 30.965584 6582.3402 5.1171192e+09 0.13594527 0.035201219 174.14455 30.848351 6584.8299 4.8080957e+09 0.13368054 0.034063414 174.20535 30.732921 6587.3197 4.5196528e+09 0.13140425 0.033229198 174.26615 30.620014 6589.8094 4.2493668e+09 0.12898829 0.031440161 174.32695 30.506613 6592.2992 4.0098037e+09 0.12585511 0.027782948 174.38774 30.389379 6594.7889 3.7853420e+09 0.12271040 0.025739452 174.44852 30.272145 6597.2786 3.5926602e+09 0.11919035 0.025634796 174.50931 30.158432 6599.7684 3.4131138e+09 0.11707928 0.024975945 174.57010 30.045540 6602.2581 3.2179643e+09 0.11565434 0.027296351 174.63226 29.922996 6604.7479 3.0165252e+09 0.11381718 0.026515342 174.69576 29.791106 6607.2376 2.8235838e+09 0.11211993 0.025237783 174.75801 29.667964 6609.7274 2.6525815e+09 0.10884436 0.023921993 174.81881 29.555057 6612.2171 2.5103284e+09 0.10664462 0.024158537 174.87892 29.442153 6614.7069 2.3791122e+09 0.10587905 0.023453500 174.93537 29.329261 6617.1966 2.2538921e+09 0.10478527 0.023504429 174.99182 29.216370 6619.6863 2.1411998e+09 0.10440542 0.024691516 175.05197 29.099765 6622.1761 2.0397206e+09 0.10332829 0.024711126 175.11276 28.982531 6624.6658 1.9400946e+09 0.10172350 0.025218721 175.17115 28.867693 6627.1556 1.8497172e+09 0.099734737 0.025376903 175.22760 28.754801 6629.6453 1.7616903e+09 0.098576771 0.025992431 175.28580 28.638397 6632.1351 1.6597823e+09 0.096832460 0.026048539 175.34930 28.511392 6634.6248 1.5660126e+09 0.095360580 0.026372418 175.41138 28.387230 6637.1145 1.4756937e+09 0.093813293 0.026105315 175.46783 28.274323 6639.6043 1.4012972e+09 0.093137647 0.025412091 175.52429 28.161416 6642.0940 1.3399383e+09 0.093283747 0.025155544 175.58074 28.044619 6644.5838 1.2773088e+09 0.092022870 0.025406699 175.63719 27.927384 6647.0735 1.2224310e+09 0.090525844 0.026476483 175.69363 27.812737 6649.5633 1.1706493e+09 0.089158126 0.026857273 175.75007 27.699846 6652.0530 1.1202032e+09 0.088324472 0.027265102 175.80715 27.582823 6654.5427 1.0639343e+09 0.087096963 0.027805014 175.86578 27.455818 6657.0325 1.0093368e+09 0.084668562 0.028938788 175.92387 27.332274 6659.5222 9.5365699e+08 0.082808765 0.031725662 175.98031 27.219367 6662.0120 9.0535769e+08 0.081096952 0.033037557 176.03676 27.106460 6664.5017 8.6812435e+08 0.079959635 0.030370354 176.08912 26.993567 6666.9915 8.3125618e+08 0.079875365 0.027101792 176.14123 26.880675 6669.4812 7.9853121e+08 0.078935110 0.027861481 176.20062 26.758754 6671.9709 7.5886287e+08 0.079006852 0.026879185 176.26412 26.631748 6674.4607 7.1758635e+08 0.078057837 0.029343406 176.32087 26.513106 6676.9504 6.8466456e+08 0.075672893 0.032326267 176.37298 26.400214 6679.4402 6.5406480e+08 0.075413112 0.029904037 176.42697 26.283236 6681.9299 6.2653227e+08 0.076486084 0.030370771 176.48559 26.156231 6684.4197 5.9590461e+08 0.076757257 0.032675387 176.54368 26.032641 6686.9094 5.6776570e+08 0.075292316 0.034290185 176.60013 25.919734 6689.3991 5.4413713e+08 0.072411384 0.033656735 176.65659 25.806826 6691.8889 5.2071090e+08 0.071298849 0.032791545 176.71507 25.680674 6694.3786 4.9678546e+08 0.070393904 0.030730363 176.77369 25.553669 6696.8684 4.7544041e+08 0.069987712 0.030036575 176.82649 25.439259 6699.3581 4.5702945e+08 0.068455366 0.031259998 176.87860 25.326367 6701.8479 4.4063956e+08 0.066415748 0.032653489 176.93454 25.205158 6704.3376 4.2253243e+08 0.066687878 0.036343331 176.99316 25.078152 6706.8273 4.0005469e+08 0.066479545 0.039886325 177.04825 24.958798 6709.3171 3.8521494e+08 0.065637131 0.040930863 177.10035 24.845905 6711.8068 3.6946546e+08 0.063347130 0.041610180 177.15284 24.729639 6714.2966 3.5427669e+08 0.060921033 0.047325704 177.20658 24.602633 6716.7863 3.3947497e+08 0.058804378 0.049559526 177.26000 24.478333 6719.2761 3.2392216e+08 0.056560575 0.051107566 177.31211 24.365426 6721.7658 3.1320156e+08 0.057005426 0.050534638 177.36422 24.252519 6724.2555 3.0183668e+08 0.054452143 0.047792729 177.42212 24.131420 6726.7453 2.8857315e+08 0.051095537 0.040958089 177.48074 24.009300 6729.2350 2.7359170e+08 0.050685000 0.040888776 177.53525 23.883066 6731.7248 2.5979055e+08 0.048816954 0.043192451 177.58898 23.756061 6734.2145 2.5057400e+08 0.047919394 0.049340693 177.64142 23.640272 6736.7043 2.4064337e+08 0.050006439 0.053017487 177.69352 23.527380 6739.1940 2.3575933e+08 0.050842571 0.063063969 177.74642 23.407547 6741.6837 2.2754045e+08 0.049019163 0.067708763 177.80016 23.280542 6744.1735 2.1782521e+08 0.044030846 0.077927598 177.85389 23.155708 6746.6632 2.1160994e+08 0.040343728 0.071276513 177.90762 23.033587 6749.1530 2.0090928e+08 0.038759181 0.072236050 177.96136 22.909518 6751.6427 1.9196371e+08 0.034787866 0.073983414 178.01510 22.782495 6754.1325 1.7951466e+08 0.032916804 0.076000464 178.06827 22.660425 6756.6222 1.7376940e+08 0.029886030 0.075767921 178.12037 22.547532 6759.1119 1.7015692e+08 0.030358358 0.075846968 178.17255 22.434201 6761.6017 1.6540388e+08 0.032665436 0.078017936 178.22628 22.312081 6764.0914 1.5788401e+08 0.037009869 0.079487666 178.28002 22.189937 6766.5812 1.4874508e+08 0.038056744 0.081028368 178.33375 22.062953 6769.0709 1.4709847e+08 0.032867236 0.084626260 178.38748 21.935947 6771.5607 1.4614937e+08 0.028175958 0.090664981 178.44122 21.813598 6774.0504 1.4190277e+08 0.023554391 0.096703703 178.49495 21.691478 6776.5401 1.3487311e+08 0.018974505 0.10274242 178.54868 21.564931 6779.0299 1.2840210e+08 0.014377802 0.10878115 178.60242 21.437926 6781.5196 1.2486693e+08 0.0097391764 0.11481987 178.65196 21.315115 6784.0094 1.1977007e+08 0.0050951808 0.12085859 178.70081 21.192993 6786.4991 1.1581736e+08 0.00042612313 0.12689731 178.75362 21.066908 6788.9889 1.1091390e+08 -0.0042597389 0.13293603 178.80736 20.939902 6791.4786 1.0658864e+08 -0.0089648678 0.13897475 178.86109 20.816617 6793.9683 1.0273041e+08 -0.013683153 0.14501347 178.91482 20.694478 6796.4581 99649337. -0.018411894 0.15105219 178.96856 20.568847 6798.9478 96252735. -0.023154080 0.15709092 179.02229 20.441841 6801.4376 92604946. -0.027917256 0.16312964 179.07743 20.306411 6803.9273 84754985. -0.032826194 0.16916836 179.13326 20.166841 6806.4171 77922576. -0.037786542 0.17520708 179.18725 20.042615 6808.9068 74588490. -0.042643673 0.18124580 179.24098 19.920493 6811.3965 73351764. -0.047402021 0.18728452 179.29065 19.794307 6813.8863 74037291. -0.052029955 0.19332324 179.33950 19.667302 6816.3760 73456732. -0.056732790 0.19936197 179.39219 19.544131 6818.8658 71106790. -0.061568072 0.20540069 179.44592 19.422010 6821.3555 67678274. -0.066538834 0.21143941 179.50120 19.287015 6823.8453 65262410. -0.071475078 0.21747813 179.55702 19.147445 6826.3350 60508067. -0.076769284 0.22351685 179.60624 19.019769 6828.8247 57845815. -0.081942709 0.22955557 179.65509 18.892763 6831.3145 57188718. -0.086954731 0.23559429 179.71022 18.754456 6833.8042 57298205. -0.092022447 0.24163302 179.76581 18.616776 6836.2940 57512586. -0.097378907 0.24767174 179.81955 18.494655 6838.7837 56111640. -0.10366648 0.25371046 179.87341 18.371468 6841.2735 52647164. -0.11189807 0.25974918 179.92924 18.231898 6843.7632 51725351. -0.12327811 0.26578790 132.51990 18.097039 6846.2529 51532905. -0.16791491 0.27182662 -43.284931 17.974918 6848.7427 49862331. -0.13844210 0.27786534 -179.91756 17.848910 6851.2324 46327142. -0.064667304 0.28390406 -179.86174 17.709340