# # 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 = 48.477926 km # Date (UTC) = 2015-11-19T08:59:44.280 # Date (julian) = 2457345.87481806 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6500.9975 6.7742356e+10 0.048606482 0.032583990 -3.6391431 63.738614 6503.2421 6.1302942e+10 0.057355705 0.033260853 -3.8935268 63.632918 6505.4867 5.5181145e+10 0.066323618 0.033937717 -4.1451851 63.527222 6507.7314 5.0017227e+10 0.075651813 0.034614580 -4.3968121 63.421539 6509.9760 4.5359634e+10 0.085333800 0.035291444 -4.6484282 63.315861 6512.2206 4.1034289e+10 0.095348252 0.035968307 -4.8962746 63.210169 6514.4653 3.7219960e+10 0.10579737 0.036645171 -5.1428996 63.104473 6516.7099 3.4098092e+10 0.11688723 0.037322034 -5.3624711 63.008920 6518.9545 3.1754467e+10 0.12879897 0.037998898 -5.5738918 62.916422 6521.1992 2.9749471e+10 0.14135495 0.038675761 -5.8003414 62.817350 6523.4438 2.7606777e+10 0.15013669 0.039289107 -6.0419334 62.711654 6525.6884 2.5137856e+10 0.15611525 0.039703645 -6.2783785 62.603384 6527.9331 2.2667221e+10 0.16210049 0.041393890 -6.5099042 62.492653 6530.1777 2.0471978e+10 0.16719857 0.044077476 -6.7414095 62.381934 6532.4223 1.8575328e+10 0.17135080 0.047037009 -6.9728963 62.271224 6534.6670 1.6860244e+10 0.17390430 0.048131135 -7.2016997 62.163207 6536.9116 1.5295811e+10 0.17527251 0.048606137 -7.4281923 62.057509 6539.1562 1.3921895e+10 0.17571221 0.049832751 -7.6366887 61.956655 6541.4009 1.2802502e+10 0.17495046 0.051196529 -7.8304909 61.859755 6543.6455 1.1893234e+10 0.17310481 0.051551310 -8.0320411 61.758980 6545.8901 1.1065173e+10 0.17066196 0.052463542 -8.2535005 61.648250 6548.1348 1.0250380e+10 0.16908496 0.053707894 -8.4734835 61.536043 6550.3794 9.4190879e+09 0.16731116 0.055080360 -8.6899098 61.420281 6552.6240 8.6983944e+09 0.16551612 0.055429695 -8.8966932 61.310304 6554.8687 8.1268427e+09 0.16346792 0.054850609 -9.0816586 61.213416 6557.1133 7.6250639e+09 0.16109668 0.053795083 -9.2675705 61.116034 6559.3579 7.1551802e+09 0.15826185 0.052346779 -9.4789636 61.005305 6561.6026 6.6429503e+09 0.15550082 0.051075743 -9.6898634 60.894330 6563.8472 6.0965568e+09 0.15265649 0.048948335 -9.8911906 60.778565 6566.0918 5.6141122e+09 0.15037313 0.047130925 -10.091227 60.663974 6568.3365 5.2196247e+09 0.14867960 0.045462354 -10.271787 60.567089 6570.5811 4.8897830e+09 0.14686526 0.044676791 -10.452348 60.470204 6572.8258 4.5957104e+09 0.14471682 0.043757269 -10.645361 60.358378 6575.0704 4.2946607e+09 0.14220990 0.042304089 -10.841655 60.242615 6577.3150 3.9768800e+09 0.13935548 0.039725552 -11.037949 60.126852 6579.5597 3.6866284e+09 0.13621203 0.036762831 -11.234244 60.011089 6581.8043 3.4437715e+09 0.13327956 0.035353059 -11.406865 59.907161 6584.0489 3.2454423e+09 0.13013000 0.034488861 -11.574214 59.805869 6586.2936 3.0710462e+09 0.12704282 0.033167501 -11.754646 59.696660 6588.5382 2.8976770e+09 0.12410305 0.033200200 -11.945907 59.580897 6590.7828 2.7251082e+09 0.12048722 0.029605890 -12.121302 59.473243 6593.0275 2.5807089e+09 0.11738579 0.027076692 -12.284247 59.371953 6595.2721 2.4578352e+09 0.11430576 0.025651788 -12.453936 59.266472 6597.5167 2.3399042e+09 0.11181362 0.025559668 -12.640163 59.150709 6599.7614 2.2133792e+09 0.11077129 0.024975522 -12.823343 59.034946 6602.0060 2.0801660e+09 0.11047183 0.027511517 -12.999504 58.919183 6604.2506 1.9522260e+09 0.10920668 0.026220092 -13.170097 58.806602 6606.4953 1.8414718e+09 0.10864189 0.026613989 -13.328638 58.700907 6608.7399 1.7455153e+09 0.10580189 0.023712809 -13.487977 58.594756 6610.9845 1.6539515e+09 0.10266899 0.024943677 -13.664139 58.478993 6613.2292 1.5657887e+09 0.10161059 0.023657672 -13.838755 58.364076 6615.4738 1.4804572e+09 0.10014714 0.023266109 -13.988489 58.262786 6617.7184 1.4074869e+09 0.099049443 0.023677444 -14.138222 58.161496 6619.9631 1.3356450e+09 0.098242137 0.024758287 -14.304810 58.044841 6622.2077 1.2612824e+09 0.096790294 0.024702709 -14.475937 57.924046 6624.4523 1.1898282e+09 0.094874410 0.025104444 -14.626402 57.815345 6626.6970 1.1271977e+09 0.092898075 0.025702896 -14.771732 57.709649 6628.9416 1.0743282e+09 0.091252572 0.026085396 -14.928073 57.598616 6631.1862 1.0217117e+09 0.089172332 0.025949684 -15.094167 57.482853 6633.4309 9.6055008e+08 0.087506908 0.026227479 -15.257527 57.364355 6635.6755 9.0514888e+08 0.085627684 0.026501090 -15.418588 57.243558 6637.9201 8.5661073e+08 0.084070838 0.025710754 -15.568442 57.131168 6640.1648 8.1438877e+08 0.083588429 0.025250491 -15.709368 57.025474 6642.4094 7.7795119e+08 0.083331600 0.025168450 -15.854613 56.915462 6644.6540 7.3405935e+08 0.082409218 0.025414294 -16.010642 56.794665 6646.8987 6.9171002e+08 0.081529589 0.026385333 -16.160835 56.678386 6649.1433 6.5664028e+08 0.080574521 0.027436137 -16.297357 56.572692 6651.3879 6.2505317e+08 0.080394759 0.026781471 -16.434289 56.466570 6653.6326 5.9532750e+08 0.079994551 0.027848635 -16.585284 56.345773 6655.8772 5.6087993e+08 0.078476028 0.027972684 -16.736279 56.224976 6658.1219 5.2548402e+08 0.077157464 0.030277183 -16.887274 56.104181 6660.3665 4.9507931e+08 0.075813268 0.031959114 -17.036995 55.984213 6662.6111 4.7188647e+08 0.074487408 0.032701398 -17.164709 55.878518 6664.8558 4.5260434e+08 0.073699598 0.029074924 -17.292423 55.772822 6667.1004 4.3113993e+08 0.073336077 0.027140332 -17.434445 55.655286 6669.3450 4.1027514e+08 0.072257574 0.028001342 -17.580407 55.534489 6671.5897 3.8955759e+08 0.072226384 0.026873751 -17.711821 55.425734 6673.8343 3.7334228e+08 0.071428027 0.028706959 -17.839534 55.320041 6676.0789 3.6058003e+08 0.068996214 0.031764590 -17.974206 55.206394 6678.3236 3.4573388e+08 0.067870939 0.030720204 -18.115135 55.085598 6680.5682 3.2852125e+08 0.068300922 0.029564113 -18.256064 54.964802 6682.8128 3.1078938e+08 0.068881866 0.031045573 -18.396992 54.844007 6685.0575 2.9366982e+08 0.068630459 0.032765530 -18.525744 54.731561 6687.3021 2.8359538e+08 0.066504647 0.034174419 -18.644651 54.625865 6689.5467 2.7450240e+08 0.063802900 0.033523880 -18.768353 54.514487 6691.7914 2.6655831e+08 0.062615686 0.032814553 -18.904248 54.388658 6694.0360 2.5995248e+08 0.061527423 0.031210575 -19.040144 54.264316 6696.2806 2.4984171e+08 0.061386027 0.029792382 -19.176040 54.143521 6698.5253 2.3694116e+08 0.060364091 0.030938805 -19.305339 54.026022 6700.7699 2.2951128e+08 0.058518827 0.031238775 -19.419858 53.915907 6703.0145 2.1254330e+08 0.058068006 0.033711604 -19.535002 53.805385 6705.2592 2.0056904e+08 0.058166066 0.037129355 -19.665842 53.684609 6707.5038 1.8816685e+08 0.057773226 0.040114657 -19.796683 53.563832 6709.7484 1.7579940e+08 0.056775079 0.040656501 -19.927545 53.443036 6711.9931 1.6794375e+08 0.054577313 0.041822075 -20.058084 53.321917 6714.2377 1.5515965e+08 0.052358262 0.047321279 -20.183913 53.196088 6716.4823 1.5003814e+08 0.050437299 0.049111801 -20.308526 53.071816 6718.7270 1.4787588e+08 0.048022422 0.050944620 -20.418640 52.966106 6720.9716 1.4661652e+08 0.048169307 0.050307189 -20.528755 52.860395 6723.2162 1.4177881e+08 0.046969102 0.049489546 -20.647491 52.738447 6725.4609 1.3313900e+08 0.042701923 0.041288133 -20.768288 52.612618 6727.7055 1.2833592e+08 0.041585001 0.040020445 -20.889084 52.490917 6729.9501 1.2383053e+08 0.040444520 0.040412132 -21.009880 52.370120 6732.1948 1.1757131e+08 0.038779910 0.043776067 -21.130659 52.245146 6734.4394 1.0915010e+08 0.038181382 0.049327161 -21.251435 52.119338 6736.6840 1.0409484e+08 0.040007115 0.052941085 -21.359461 52.006810 6738.9287 1.0344552e+08 0.041051653 0.062433907 -21.465171 51.896696 6741.1733 1.0099960e+08 0.039925981 0.066252995 -21.576670 51.780430 6743.4179 98015177. 0.035962667 0.073866915 -21.692433 51.659635 6745.6626 93560202. 0.033849341 0.078845431 -21.808195 51.535875 6747.9072 88095028. 0.029809765 0.067048841 -21.923958 51.410046 6750.1519 86405492. 0.027409310 0.072263425 -22.036690 51.284216 6752.3965 83250028. 0.024825465 0.073675668 -22.147420 51.158387 6754.6411 78669831. 0.023448553 0.075182470 -22.261236 51.035668 6756.8858 77300185. 0.020806353 0.076446086 -22.376979 50.914891 6759.1304 70453183. 0.021608330 0.075851419 -22.489572 50.790939 6761.3750 66485866. 0.023077007 0.077999209 -22.600302 50.665110 6763.6197 61490809. 0.027349459 0.078324943 -22.711032 50.539281 6765.8643 57046759. 0.028743094 0.079688973 -22.821762 50.413452 6768.1089 58327779. 0.025150431 0.081247964 -22.929196 50.290918 6770.3536 53735963. 0.018434882 0.087737238 -23.034892 50.170123 6772.5982 50970442. 0.0099430330 0.093181462 -23.140589 50.045966 6774.8428 48158629. -0.019881482 0.098625687 -23.246286 49.920137 6777.0875 45574062. -0.0046571187 0.10406991 -23.351983 49.794308 6779.3321 48769310. 0.036976524 0.10951414 -23.457680 49.668478