# # 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 = 43.161692 km # Date (UTC) = 2015-12-31T09:09:43.240 # Date (julian) = 2457387.88175046 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6531.6604 1.7339129e+10 0.18074519 0.046189923 -18.875972 48.008667 6533.5475 1.6284906e+10 0.18114499 0.047752253 -18.958247 47.929684 6535.4346 1.4421370e+10 0.18037584 0.048035786 -19.039300 47.849480 6537.3216 1.3742674e+10 0.18001756 0.048836862 -19.118283 47.767206 6539.2087 1.3350077e+10 0.17876021 0.049896262 -19.197266 47.684932 6541.0958 1.3151682e+10 0.17708869 0.051295468 -19.276249 47.602658 6542.9829 1.2175406e+10 0.17554269 0.051375383 -19.355233 47.520384 6544.8699 1.1268785e+10 0.17414720 0.052350046 -19.434216 47.438109 6546.7570 1.0538009e+10 0.17210086 0.053087411 -19.512235 47.356798 6548.6441 9.6723452e+09 0.17023450 0.053859987 -19.587938 47.277804 6550.5311 9.1323260e+09 0.16877726 0.055118353 -19.663640 47.198810 6552.4182 8.6664526e+09 0.16719364 0.055481503 -19.742703 47.116349 6554.3053 8.3986531e+09 0.16457863 0.054838787 -19.831561 47.023789 6556.1924 7.8853049e+09 0.16205370 0.053984845 -19.920419 46.931229 6558.0794 7.3036101e+09 0.15995638 0.053171620 -20.001975 46.846199 6559.9665 6.5874984e+09 0.15762421 0.052278090 -20.077668 46.767216 6561.8536 6.0242586e+09 0.15455890 0.050952058 -20.153361 46.688234 6563.7406 5.6823138e+09 0.15100219 0.049071608 -20.227355 46.607553 6565.6277 5.4549680e+09 0.14794768 0.047605613 -20.299757 46.525278 6567.5148 5.3412486e+09 0.14528465 0.046181917 -20.372158 46.443004 6569.4019 5.0029890e+09 0.14317177 0.044878580 -20.446130 46.360730 6571.2889 4.6433428e+09 0.14171292 0.044424361 -20.521822 46.278456 6573.1760 4.3362370e+09 0.14011580 0.043516238 -20.597514 46.196182 6575.0631 4.1165109e+09 0.13826026 0.042311417 -20.671767 46.115346 6576.9502 3.9844489e+09 0.13576723 0.040277746 -20.744178 46.036352 6578.8372 3.8313090e+09 0.13291561 0.037327535 -20.816590 45.957357 6580.7243 3.6197048e+09 0.13077932 0.035851396 -20.892622 45.872930 6582.6114 3.4000317e+09 0.12902031 0.035127423 -20.974074 45.780370 6584.4984 3.1749466e+09 0.12707719 0.034243990 -21.055527 45.687810 6586.3855 2.9773033e+09 0.12507402 0.033166313 -21.130648 45.602445 6588.2726 2.8097235e+09 0.12343355 0.033288899 -21.203049 45.520171 6590.1597 2.6635443e+09 0.12123769 0.030765073 -21.275450 45.437897 6592.0467 2.5276444e+09 0.11866204 0.028028134 -21.347852 45.357797 6593.9338 2.4072433e+09 0.11608841 0.026234064 -21.420253 45.278814 6595.8209 2.2905630e+09 0.11322334 0.025708699 -21.492655 45.199830 6597.7080 2.1869703e+09 0.11092999 0.025499325 -21.563014 45.118792 6599.5950 2.0810303e+09 0.10930406 0.024965518 -21.632133 45.036506 6601.4821 1.9796111e+09 0.10845911 0.027272730 -21.701253 44.954221 6603.3692 1.8910748e+09 0.10670017 0.026444727 -21.770367 44.871942 6605.2562 1.8150635e+09 0.10542398 0.026880009 -21.839477 44.789668 6607.1433 1.7458656e+09 0.10351449 0.025424005 -21.908588 44.707394 6609.0304 1.6744320e+09 0.10036531 0.023714957 -21.982411 44.619509 6610.9175 1.5871574e+09 0.097771629 0.024879589 -22.060161 44.526949 6612.8045 1.4915655e+09 0.097071543 0.023719638 -22.137912 44.434389 6614.6916 1.4027413e+09 0.096320312 0.023464005 -22.205586 44.353295 6616.5787 1.3299880e+09 0.095191594 0.023373122 -22.271406 44.274313 6618.4657 1.2732682e+09 0.094756947 0.024122491 -22.337225 44.195330 6620.3528 1.2217698e+09 0.094226458 0.024880894 -22.405697 44.113695 6622.2399 1.1748935e+09 0.093113161 0.024694141 -22.474807 44.031421 6624.1270 1.1265863e+09 0.091477801 0.024930274 -22.543917 43.949146 6626.0140 1.0827743e+09 0.090531283 0.026573019 -22.610509 43.866864 6627.9011 1.0404192e+09 0.088938655 0.025664895 -22.676337 43.784579 6629.7882 9.9451875e+08 0.087769333 0.025966599 -22.742166 43.702293 6631.6753 9.5038222e+08 0.086153548 0.025999358 -22.813986 43.615216 6633.5623 9.0144925e+08 0.084943962 0.026250430 -22.888034 43.526358 6635.4494 8.5201787e+08 0.083698678 0.026467182 -22.961758 43.437685 6637.3365 8.0814653e+08 0.082515580 0.025996618 -23.024286 43.355410 6639.2235 7.7132748e+08 0.081637922 0.025548175 -23.086815 43.273136 6641.1106 7.3870479e+08 0.082071933 0.025148676 -23.149346 43.190861 6642.9977 7.1128116e+08 0.081530964 0.025192524 -23.215129 43.108587 6644.8848 6.8419480e+08 0.080440771 0.025439230 -23.280949 43.026313 6646.7718 6.5690253e+08 0.079177437 0.026319674 -23.346768 42.944039 6648.6589 6.2849501e+08 0.078026114 0.027405359 -23.416892 42.851984 6650.5460 5.9207061e+08 0.077663557 0.026380227 -23.487237 42.759424 6652.4331 5.6084206e+08 0.077369624 0.027369671 -23.555631 42.670255 6654.3201 5.3124722e+08 0.076806549 0.027899850 -23.618167 42.591262 6656.2072 5.0812472e+08 0.075375856 0.028205273 -23.680704 42.512269 6658.0943 4.8618167e+08 0.074337024 0.030228267 -23.743238 42.432581 6659.9813 4.6210268e+08 0.073299058 0.031629890 -23.805767 42.350307 6661.8684 4.4581323e+08 0.072060569 0.032977251 -23.868295 42.268033 6663.7555 4.2988463e+08 0.070993193 0.032273849 -23.932177 42.183979 6665.6426 4.1188519e+08 0.071081463 0.027494276 -24.002523 42.091418 6667.5296 3.9270432e+08 0.070671389 0.027298000 -24.072869 41.998858 6669.4167 3.7164532e+08 0.069896463 0.027927719 -24.137970 41.911154 6671.3038 3.5560974e+08 0.069963054 0.026869677 -24.197208 41.828880 6673.1908 3.4356153e+08 0.069583040 0.027744645 -24.256445 41.746606 6675.0779 3.3183173e+08 0.068154753 0.029947603 -24.318893 41.661477 6676.9650 3.1448133e+08 0.066240023 0.032335656 -24.385536 41.572619 6678.8521 2.9717709e+08 0.065719013 0.030366716 -24.452178 41.483761 6680.7391 2.7996795e+08 0.066614572 0.029601027 -24.513402 41.399718 6682.6262 2.6770170e+08 0.067159356 0.030902991 -24.572647 41.317433 6684.5133 2.5711437e+08 0.067092956 0.032680139 -24.631893 41.235148 6686.4004 2.4546461e+08 0.066124017 0.033994017 -24.696275 41.145728 6688.2874 2.3487539e+08 0.063804795 0.033851538 -24.762919 41.053167 6690.1745 2.2636639e+08 0.062247379 0.033095866 -24.829547 40.960635 6692.0616 2.1603981e+08 0.061290571 0.032693829 -24.888848 40.881535 6693.9486 2.0378472e+08 0.060472047 0.031278645 -24.948086 40.802553 6695.8357 1.8941877e+08 0.060519749 0.029705962 -25.007323 40.723570 6697.7228 1.7871496e+08 0.059963301 0.030182736 -25.073632 40.631624 6699.6099 1.6912941e+08 0.058732154 0.031027704 -25.140275 40.539064 6701.4969 1.6055012e+08 0.057221057 0.032138590 -25.204203 40.449115 6703.3840 1.5118193e+08 0.057359543 0.034636142 -25.260149 40.366841 6705.2711 1.4030532e+08 0.057561084 0.037150530 -25.316096 40.284567 6707.1582 1.3762373e+08 0.057261103 0.040164171 -25.373548 40.200079 6709.0452 1.2968229e+08 0.056775877 0.041103778 -25.436489 40.107518 6710.9323 1.2617450e+08 0.055346725 0.040678980 -25.499430 40.014958 6712.8194 1.1829987e+08 0.053665889 0.043351253 -25.558778 39.929374 6714.7064 1.0812360e+08 0.051923354 0.047356519 -25.614732 39.850380 6716.5935 1.0337230e+08 0.050310913 0.049275551 -25.670686 39.771386 6718.4806 99566506. 0.048438282 0.050560891 -25.729966 39.685933 6720.3677 97091646. 0.048177384 0.050377167 -25.792907 39.593373 6722.2547 93822001. 0.048061748 0.050290290 -25.855847 39.500813 6724.1418 92498486. 0.046008959 0.048742510 -25.918788 39.408254 6726.0289 91751224. 0.042763600 0.040951628 -25.981729 39.315694 6727.9159 88050522. 0.042228019 0.039740080 -26.044395 39.223408 6729.8030 85363989. 0.041278594 0.040510194 -26.103633 39.134552 6731.6901 79332125. 0.039834996 0.043123438 -26.162872 39.045695 6733.5772 77572863. 0.039035430 0.047057908 -26.220881 38.959295 6735.4642 80463847. 0.040103941 0.049786255 -26.276828 38.877020 6737.3513 77702941. 0.041578008 0.055254673 -26.332775 38.794746 6739.2384 78025005. 0.042168303 0.063118287 -26.389823 38.710268 6741.1255 71458718. 0.041068348 0.066116496 -26.449061 38.621410 6743.0125 68288688. 0.037940324 0.071131952 -26.508300 38.532552 6744.8996 72497574. 0.035019897 0.078489230 -26.567544 38.441339 6746.7867 75394580. 0.031330561 0.069841330 -26.626791 38.348765 6748.6737 74177426. 0.030571316 0.070561495 -26.686038 38.256192 6750.5608 67581029. 0.027521182 0.072961750 -26.745277 38.163631 6752.4479 60670074. 0.024265434 0.073616184 -26.804515 38.071071 6754.3350 57496630. 0.022289296 0.075674810 -26.863754 37.979370 6756.2220 60100937. 0.019053455 0.074738237 -26.922992 37.890511 6758.1091 53016384. 0.015059847 0.073936044 -26.982231 37.801653 6759.9962 48383090. -0.0041487028 0.076060349 -27.039502 37.710828 6761.8833 45985438. 0.012932708 0.078041199 -27.095038 37.618268 6763.7703 47963163. 0.050043040 0.078783804 -27.150574 37.525708