# # 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 = 40.435813 km # Date (UTC) = 2017-01-13T10:29:37.102 # Date (julian) = 2457766.93723498 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6506.2059 6.3085063e+10 0.079374166 0.034154583 97.924423 37.262261 6508.3009 5.7521160e+10 0.089706175 0.034786311 97.988300 37.147173 6510.3958 5.2736839e+10 0.10032518 0.035418038 98.049954 37.032085 6512.4908 4.8049325e+10 0.11110492 0.036049765 98.111961 36.916691 6514.5857 4.3269010e+10 0.12197215 0.036681492 98.187119 36.789859 6516.6807 3.8747988e+10 0.13296791 0.037313220 98.262278 36.663027 6518.7756 3.4724742e+10 0.14415048 0.037944947 98.325319 36.546732 6520.8706 3.1484149e+10 0.15561409 0.038576674 98.386974 36.431644 6522.9655 2.8779393e+10 0.16462680 0.039170084 98.450538 36.316556 6525.0605 2.6396222e+10 0.17107637 0.039775313 98.516303 36.201470 6527.1554 2.4156944e+10 0.17555681 0.040829312 98.581940 36.086512 6529.2504 2.2090585e+10 0.17862229 0.042634617 98.643594 35.975535 6531.3453 2.0194764e+10 0.18132509 0.045731313 98.705249 35.864557 6533.4403 1.8384687e+10 0.18340553 0.047706695 98.772174 35.741279 6535.5352 1.6605168e+10 0.18306100 0.047992113 98.842634 35.609749 6537.6302 1.4900154e+10 0.18277828 0.048982332 98.908958 35.485942 6539.7251 1.3388952e+10 0.18142919 0.050521392 98.970612 35.370853 6541.8201 1.2118012e+10 0.17787366 0.051060580 99.032267 35.255916 6543.9150 1.1053142e+10 0.17399464 0.051622051 99.093921 35.144940 6546.0100 1.0135974e+10 0.17019211 0.052472753 99.155576 35.033965 6548.1050 9.3279264e+09 0.16779456 0.053698988 99.214753 34.920496 6550.1999 8.6133841e+09 0.16550947 0.055035413 99.272305 34.805390 6552.2949 7.9167439e+09 0.16300074 0.055512552 99.332068 34.688276 6554.3898 7.1992181e+09 0.16012535 0.054840560 99.402532 34.561442 6556.4848 6.5236284e+09 0.15738813 0.053941857 99.472447 34.435107 6558.5797 5.9347496e+09 0.15456161 0.052745319 99.529990 34.320021 6560.6747 5.4522652e+09 0.15135245 0.051666013 99.587533 34.204934 6562.7696 5.0571022e+09 0.14830991 0.050147585 99.645077 34.089847 6564.8646 4.6899084e+09 0.14532377 0.048379775 99.702620 33.974760 6566.9595 4.3444659e+09 0.14253258 0.046640086 99.760164 33.860399 6569.0545 4.0243397e+09 0.13973596 0.044855970 99.817707 33.749422 6571.1494 3.7300370e+09 0.13755492 0.044462464 99.875250 33.638445 6573.2444 3.4713246e+09 0.13495559 0.043461374 99.932794 33.524412 6575.3393 3.2396453e+09 0.13201628 0.042034253 99.990337 33.409325 6577.4343 3.0239597e+09 0.12876306 0.039538219 100.05044 33.290588 6579.5292 2.7974584e+09 0.12528055 0.036779554 100.11620 33.163754 6581.6242 2.5762736e+09 0.12216158 0.035407596 100.18047 33.039058 6583.7191 2.3658755e+09 0.11921994 0.034657670 100.23801 32.923970 6585.8141 2.1836569e+09 0.11622993 0.033319925 100.29556 32.808881 6587.9090 2.0453324e+09 0.11355334 0.033359779 100.35002 32.696872 6590.0040 1.9133530e+09 0.11046998 0.031054634 100.40346 32.585895 6592.0989 1.7985178e+09 0.10719367 0.027977417 100.45819 32.474918 6594.1939 1.6889723e+09 0.10447880 0.026066082 100.51574 32.363943 6596.2889 1.5809917e+09 0.10183784 0.025725961 100.57328 32.252967 6598.3838 1.4823185e+09 0.10014158 0.025223923 100.62719 32.138359 6600.4788 1.3829449e+09 0.099855446 0.025974113 100.68062 32.023271 6602.5737 1.2978100e+09 0.099167138 0.027027052 100.73591 31.910026 6604.6687 1.2282465e+09 0.098141120 0.026468306 100.79346 31.799034 6606.7636 1.1624668e+09 0.097200202 0.026131771 100.85108 31.687678 6608.8586 1.0818884e+09 0.094468581 0.023709671 100.91214 31.556169 6610.9535 1.0005809e+09 0.091734031 0.024914045 100.97320 31.424660 6613.0485 9.2770954e+08 0.090889860 0.023591375 101.02749 31.311379 6615.1434 8.6585792e+08 0.089763886 0.023255944 101.08093 31.200386 6617.2384 8.1919997e+08 0.088536595 0.023518282 101.13436 31.089400 6619.3333 7.7465042e+08 0.087849339 0.024606341 101.18780 30.978424 6621.4283 7.3321124e+08 0.086897031 0.024947491 101.24113 30.867447 6623.5232 6.9570640e+08 0.085198669 0.024685676 101.29046 30.756470 6625.6182 6.5738390e+08 0.083967802 0.026135286 101.33978 30.645493 6627.7131 6.2107346e+08 0.082118365 0.025592285 101.39153 30.532090 6629.8081 5.8985804e+08 0.080799107 0.025963000 101.44496 30.417003 6631.9030 5.5776609e+08 0.078998228 0.026022497 101.49839 30.302561 6633.9980 5.3261943e+08 0.077380771 0.026326493 101.55183 30.191584 6636.0929 5.0683559e+08 0.075851711 0.026513657 101.60527 30.080607 6638.1879 4.7610544e+08 0.074944435 0.025663456 101.66082 29.958147 6640.2829 4.4553143e+08 0.075198000 0.025236045 101.71719 29.831313 6642.3778 4.1668241e+08 0.075449722 0.025167157 101.77181 29.713921 6644.4728 3.9417779e+08 0.074745356 0.025394701 101.82525 29.602944 6646.5677 3.7074848e+08 0.073969904 0.026214012 101.87802 29.491299 6648.6627 3.5049157e+08 0.073086668 0.027407872 101.92734 29.376212 6650.7576 3.3128699e+08 0.072811220 0.026428676 101.97666 29.261125 6652.8526 3.1035052e+08 0.072612741 0.027485096 102.02598 29.149036 6654.9475 2.9744907e+08 0.071570447 0.027632574 102.07531 29.038059 6657.0425 2.8291048e+08 0.069749970 0.028950376 102.12672 28.922379 6659.1374 2.6559559e+08 0.068317147 0.031805932 102.18309 28.795546 6661.2324 2.4975772e+08 0.067062978 0.032653303 102.23828 28.671375 6663.3273 2.2645269e+08 0.065912847 0.032392502 102.28760 28.560397 6665.4223 2.1237976e+08 0.065506919 0.027855210 102.33692 28.449419 6667.5172 2.0219960e+08 0.064882528 0.027293446 102.38625 28.338430 6669.6122 1.8655177e+08 0.063951399 0.027726946 102.43558 28.227436 6671.7071 1.7613590e+08 0.063715929 0.026875426 102.48491 28.116447 6673.8021 1.6364240e+08 0.062888408 0.028658801 102.53423 28.005470 6675.8970 1.5626992e+08 0.060624669 0.031516521 102.58355 27.894493 6677.9920 1.5131711e+08 0.059459555 0.030947995 102.63901 27.769732 6680.0869 1.4615353e+08 0.059506994 0.029460192 102.69538 27.642899 6682.1819 1.4330379e+08 0.060116147 0.030563520 102.74348 27.527809 6684.2769 1.3387569e+08 0.060127029 0.032668141 102.78870 27.416832 6686.3718 1.2628276e+08 0.059199250 0.033977405 102.83518 27.305855 6688.4668 1.1709629e+08 0.056616267 0.033892933 102.88450 27.194877 6690.5617 1.1465900e+08 0.055397794 0.033051491 102.93382 27.083899 6692.6567 1.1052587e+08 0.054671550 0.032002789 102.97955 26.972922 6694.7516 1.0407627e+08 0.054089111 0.030207602 103.02477 26.861945 6696.8466 97764006. 0.053752391 0.030027516 103.07491 26.743963 6698.9415 91940945. 0.052647008 0.031510157 103.13128 26.617130 6701.0365 85725624. 0.050982720 0.031462957 103.18415 26.495261 6703.1314 82460218. 0.050987044 0.034004093 103.22936 26.384284 6705.2264 79032635. 0.051331719 0.037071053 103.27458 26.273307 6707.3213 73744723. 0.051088735 0.040140797 103.31979 26.162329 6709.4163 75263517. 0.050809520 0.040867770 103.36500 26.051352 6711.5112 70552288. 0.049064056 0.041273873 103.41311 25.933284 6713.6062 67894435. 0.047235787 0.045879058 103.46478 25.806450 6715.7011 66259257. 0.045691893 0.048095690 103.51570 25.685974 6717.7961 60699995. 0.043538383 0.049825027 103.56503 25.579107 6719.8910 60433558. 0.042357037 0.050523286 103.61435 25.472240 6721.9860 58340913. 0.042281933 0.050600983 103.66576 25.347695 6724.0809 54094632. 0.039443684 0.049250721 103.71743 25.220862 6726.1759 51894234. 0.034909945 0.040952954 103.76110 25.106027 6728.2708 50888936. 0.032896762 0.040011982 103.80221 24.995050 6730.3658 48865893. 0.028642176 0.040880461 103.84673 24.878939 6732.4608 46066888. 0.020384425 0.043825032 103.89840 24.752105 6734.5557 44798689. -0.016867621 0.049320164 103.94882 24.629164 6736.6507 44064994. 0.013205067 0.052814859 103.99403 24.522297 6738.7456 46411003. 0.076982191 0.061426022 104.03924 24.415430