# # 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 = 46.786910 km # Date (UTC) = 2013-01-17T09:10:52.626 # Date (julian) = 2456309.88255354 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6494.1529 8.4002987e+10 0.023743053 0.030520026 -17.380244 51.641616 6496.1604 7.8123992e+10 0.029974383 0.031125382 -17.501783 51.524579 6498.1679 7.2602106e+10 0.036374772 0.031730737 -17.622458 51.407542 6500.1754 6.8374189e+10 0.043162585 0.032336093 -17.739495 51.290504 6502.1829 6.4280254e+10 0.050366121 0.032941448 -17.856533 51.173466 6504.1904 6.0482768e+10 0.058108843 0.033546804 -17.973570 51.056429 6506.1979 5.6532878e+10 0.066389514 0.034152159 -18.090608 50.939392 6508.2054 5.1752849e+10 0.075014113 0.034757515 -18.222235 50.807766 6510.2129 4.6988663e+10 0.084128411 0.035362870 -18.358754 50.671247 6512.2204 4.2422100e+10 0.093749907 0.035968225 -18.475022 50.551177 6514.2279 3.8513302e+10 0.10409563 0.036573581 -18.587558 50.434139 6516.2354 3.5297299e+10 0.11525985 0.037178936 -18.700094 50.317101 6518.2428 3.2379227e+10 0.12710346 0.037784292 -18.812630 50.200065 6520.2503 2.9641821e+10 0.13949910 0.038389647 -18.925166 50.083027 6522.2578 2.7160124e+10 0.15169755 0.038984770 -19.037702 49.965989 6524.2653 2.4810928e+10 0.15931216 0.039521223 -19.149428 49.848141 6526.2728 2.2701224e+10 0.16575781 0.039954124 -19.257464 49.726602 6528.2803 2.0845888e+10 0.17239241 0.041664873 -19.365499 49.605063 6530.2878 1.9145189e+10 0.17748795 0.044231655 -19.473533 49.487839 6532.2953 1.7660305e+10 0.18079643 0.046930907 -19.581568 49.370802 6534.3028 1.6303136e+10 0.18122999 0.048029269 -19.689602 49.253766 6536.3103 1.5064416e+10 0.17980445 0.048068155 -19.797636 49.136729 6538.3178 1.3889754e+10 0.17948807 0.049311442 -19.903351 49.019692 6540.3253 1.2760038e+10 0.17856557 0.051007790 -20.006884 48.902653 6542.3328 1.1783709e+10 0.17632947 0.051128593 -20.106614 48.788757 6544.3403 1.1007069e+10 0.17443064 0.051920415 -20.197204 48.682412 6546.3478 1.0416161e+10 0.17239583 0.052750716 -20.287793 48.576068 6548.3553 9.8837013e+09 0.17091944 0.053773752 -20.388153 48.461653 6550.3628 9.3278583e+09 0.16953300 0.055076202 -20.491687 48.344616 6552.3703 8.7470457e+09 0.16801333 0.055493562 -20.595220 48.227579 6554.3778 8.1859680e+09 0.16589694 0.054840308 -20.698753 48.110540 6556.3853 7.6828686e+09 0.16374594 0.053956480 -20.800882 47.993502 6558.3928 7.2141072e+09 0.16160903 0.052904598 -20.899913 47.876466 6560.4003 6.7916517e+09 0.15902864 0.051913398 -20.998945 47.759023 6562.4078 6.4152748e+09 0.15629068 0.050491880 -21.097976 47.637483 6564.4153 6.0816204e+09 0.15324802 0.048583391 -21.197008 47.515944 6566.4228 5.7603931e+09 0.15057005 0.046943719 -21.292129 47.398317 6568.4303 5.4561313e+09 0.14817125 0.045376135 -21.386659 47.281280 6570.4378 5.1518665e+09 0.14592978 0.044736168 -21.484103 47.164243 6572.4453 4.8577233e+09 0.14328414 0.043975160 -21.583134 47.047205 6574.4528 4.6048603e+09 0.14008585 0.042637542 -21.675217 46.934720 6576.4603 4.4016305e+09 0.13710318 0.040841618 -21.757930 46.828375 6578.4678 4.2288642e+09 0.13418196 0.037910962 -21.840643 46.722031 6580.4753 4.0652930e+09 0.13180267 0.036081544 -21.933835 46.606204 6582.4828 3.8769700e+09 0.12988547 0.035162423 -22.028365 46.489167 6584.4903 3.6781047e+09 0.12789100 0.034248451 -22.122895 46.369135 6586.4978 3.4891790e+09 0.12596562 0.033164862 -22.217426 46.247596 6588.5052 3.3055363e+09 0.12433663 0.033211201 -22.309958 46.128054 6590.5127 3.1369629e+09 0.12212286 0.030108279 -22.399987 46.011016 6592.5202 2.9715487e+09 0.11990926 0.027568212 -22.490015 45.893978 6594.5277 2.8067888e+09 0.11758727 0.025882820 -22.580044 45.776942 6596.5352 2.6514194e+09 0.11496239 0.025724840 -22.670006 45.659968 6598.5427 2.5247027e+09 0.11295451 0.025148045 -22.748838 45.553569 6600.5502 2.4271844e+09 0.11224855 0.026121050 -22.827612 45.447225 6602.5577 2.3430478e+09 0.11099647 0.027040690 -22.911584 45.335942 6604.5652 2.2495225e+09 0.10946305 0.026406889 -23.001612 45.218905 6606.5727 2.1430572e+09 0.10827367 0.026474798 -23.090558 45.100787 6608.5802 2.0358707e+09 0.10531840 0.023717030 -23.176086 44.979247 6610.5877 1.9361794e+09 0.10212191 0.024564530 -23.261614 44.857793 6612.5952 1.8374834e+09 0.10022939 0.023876030 -23.347141 44.740755 6614.6027 1.7446736e+09 0.098732492 0.023525247 -23.432668 44.623717 6616.6102 1.6649259e+09 0.096790589 0.023378071 -23.509670 44.515206 6618.6177 1.6000396e+09 0.095644836 0.024237237 -23.584504 44.408864 6620.6252 1.5451601e+09 0.094606896 0.024968669 -23.662101 44.299757 6622.6327 1.4898163e+09 0.093255206 0.024589589 -23.747629 44.182718 6624.6402 1.4227551e+09 0.091965597 0.025205004 -23.833157 44.065514 6626.6477 1.3537341e+09 0.090580969 0.025765680 -23.918684 43.943975 6628.6552 1.2879925e+09 0.089620987 0.025969110 -24.004212 43.822436 6630.6627 1.2210252e+09 0.088395002 0.025929935 -24.086069 43.704568 6632.6702 1.1610923e+09 0.087273527 0.026112706 -24.167094 43.587532 6634.6777 1.1058513e+09 0.086085229 0.026376276 -24.242104 43.479184 6636.6852 1.0653498e+09 0.084719774 0.026283669 -24.312999 43.376778 6638.6927 1.0306736e+09 0.083721424 0.025641464 -24.384452 43.273320 6640.7002 9.9400200e+08 0.084146976 0.025184985 -24.465478 43.151781 6642.7077 9.5289641e+08 0.083911573 0.025180656 -24.546504 43.030241 6644.7152 9.0320196e+08 0.083011942 0.025420900 -24.627530 42.912454 6646.7227 8.5963097e+08 0.081941462 0.026294223 -24.708556 42.795418 6648.7302 8.1895245e+08 0.080834106 0.027453058 -24.789582 42.675626 6650.7377 7.7917657e+08 0.080403632 0.026424108 -24.870608 42.554087 6652.7452 7.4249155e+08 0.079975606 0.027455544 -24.946145 42.440013 6654.7527 7.1061209e+08 0.078868515 0.027715587 -25.013113 42.337593 6656.7602 6.8465873e+08 0.076930977 0.028690599 -25.080080 42.235173 6658.7676 6.6207842e+08 0.075325257 0.031422521 -25.155178 42.116484 6660.7751 6.3471568e+08 0.073956056 0.032330569 -25.231689 41.994966 6662.7826 5.9906188e+08 0.072752530 0.032605162 -25.308209 41.876269 6664.7901 5.6790099e+08 0.072002085 0.029314996 -25.384734 41.759230 6666.7976 5.4155553e+08 0.071795886 0.027064025 -25.457355 41.648163 6668.8051 5.2164070e+08 0.070811247 0.028183262 -25.524322 41.545743 6670.8126 5.0444791e+08 0.070981302 0.026952153 -25.591289 41.443323 6672.8201 4.8789929e+08 0.070789614 0.027354961 -25.666571 41.324271 6674.8276 4.7028090e+08 0.069595366 0.029652949 -25.743095 41.202732 6676.8351 4.5038026e+08 0.067623971 0.032251956 -25.816701 41.084112 6678.8426 4.2919803e+08 0.067100961 0.030373033 -25.888723 40.967076 6680.8501 4.0553451e+08 0.068155884 0.029624993 -25.960741 40.848126 6682.8576 3.8687199e+08 0.068859361 0.031079794 -26.032752 40.726608 6684.8651 3.6970746e+08 0.068839501 0.032697993 -26.104765 40.606008 6686.8726 3.5266102e+08 0.067472984 0.034268782 -26.176788 40.488970 6688.8801 3.3641579e+08 0.064912759 0.033988349 -26.248811 40.371931 6690.8876 3.2450946e+08 0.064019118 0.033014143 -26.311988 40.265394 6692.8951 3.1066879e+08 0.063299411 0.031725901 -26.375016 40.159034 6694.9026 3.0005865e+08 0.062722387 0.029995987 -26.442046 40.047923 6696.9101 2.8796642e+08 0.062280714 0.030053912 -26.514069 39.930887 6698.9176 2.7380700e+08 0.061152960 0.031477319 -26.586092 39.813851 6700.9251 2.6680308e+08 0.059444750 0.031353883 -26.658115 39.696814 6702.9326 2.5686579e+08 0.059092995 0.033621405 -26.730110 39.579751 6704.9401 2.4548702e+08 0.059256343 0.036639184 -26.797639 39.458251 6706.9476 2.3403130e+08 0.058911800 0.040095596 -26.865148 39.336733 6708.9551 2.2251288e+08 0.058424782 0.041083625 -26.929163 39.230110 6710.9626 2.1389522e+08 0.056925875 0.040684907 -26.992192 39.127688 6712.9701 2.1033578e+08 0.055157070 0.043631060 -27.056306 39.021737 6714.9776 2.1393917e+08 0.053319555 0.047376902 -27.123828 38.904700 6716.9851 1.9485291e+08 0.051570998 0.049852274 -27.191349 38.787574 6718.9926 1.8026480e+08 0.049473262 0.051358258 -27.258870 38.666035 6721.0001 1.6793875e+08 0.050083443 0.050303917 -27.326392 38.544496 6723.0076 1.5820169e+08 0.049221145 0.049373160 -27.393913 38.426551 6725.0151 1.6377328e+08 0.045141007 0.041566616 -27.461434 38.309513 6727.0226 1.5287436e+08 0.043665674 0.040930339 -27.526358 38.192475 6729.0301 1.4648089e+08 0.043468551 0.041025398 -27.589378 38.075439 6731.0375 1.4247860e+08 0.041810021 0.041824751 -27.653994 37.956809 6733.0450 1.3808960e+08 0.040769463 0.044168866 -27.721505 37.835290 6735.0525 1.3312910e+08 0.040953987 0.049349209 -27.788417 37.714370 6737.0600 1.2355064e+08 0.042548493 0.054326820 -27.851436 37.597334 6739.0675 1.1671956e+08 0.043206959 0.062909203 -27.914456 37.480297 6741.0750 1.0914372e+08 0.042086524 0.065972689 -27.981581 37.363259 6743.0825 1.0434407e+08 0.038694333 0.071604188 -28.049103 37.246221 6745.0900 1.0365873e+08 0.035788904 0.078604733 -28.113516 37.126075 6747.0975 97452982. 0.031246020 0.067327587 -28.176535 37.004536 6749.1050 91960259. 0.031192577 0.072249178 -28.235864 36.891964 6751.1125 85927989. 0.028386088 0.073759245 -28.291014 36.789544 6753.1200 82851283. 0.025959231 0.073365684 -28.346165 36.687124 6755.1275 82580326. 0.024369398 0.074549439 -28.408627 36.571120 6757.1350 79780570. 0.022165260 0.076330335 -28.471637 36.454101 6759.1425 75324852. 0.023248447 0.075854344 -28.534653 36.337070 6761.1500 68291628. 0.024069288 0.077980618 -28.597673 36.220034 6763.1575 65163831. 0.029016007 0.076917440 -28.658501 36.100804 6765.1650 60521556. 0.031240849 0.079561314 -28.717020 35.979265 6767.1725 59026600. 0.030769471 0.081782614 -28.776734 35.858922 6769.1800 59268784. 0.026329370 0.084890824 -28.839754 35.741886 6771.1875 58476376. 0.022667152 0.089759887 -28.903005 35.623990 6773.1950 59919466. 0.018971309 0.094628951 -28.971279 35.487442 6775.2025 56641242. 0.014866046 0.099498014 -29.038188 35.353623 6777.2100 54502092. 0.010367869 0.10436708 -29.096707 35.236587 6779.2175 52543325. 0.0044539927 0.10923614 -29.155225 35.119551 6781.2250 50892929. -0.012875522 0.11410520 -29.217878 35.002512 6783.2325 52995178. -0.0042819322 0.11897427 -29.280898 34.885473 6785.2400 51686645. 0.015111306 0.12384333 -29.340781 34.765299