# # 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 = 55.704980 km # Date (UTC) = 2014-01-28T09:31:32.490 # Date (julian) = 2456685.89690382 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6498.2605 5.8468002e+10 0.042775259 0.031758681 -14.719996 60.752503 6500.8938 5.1921100e+10 0.051646997 0.032552746 -15.050602 60.545875 6503.5271 4.6223405e+10 0.060531797 0.033346811 -15.373252 60.347229 6506.1604 4.1616615e+10 0.069616903 0.034140876 -15.689371 60.136220 6508.7938 3.7911178e+10 0.079102257 0.034934942 -16.003481 59.925869 6511.4271 3.4477367e+10 0.089052072 0.035729007 -16.314750 59.719223 6514.0604 3.1328569e+10 0.099610077 0.036523072 -16.613861 59.517122 6516.6937 2.8631479e+10 0.11099379 0.037317137 -16.868755 59.344897 6519.3270 2.6435533e+10 0.12342752 0.038111203 -17.152753 59.143567 6521.9603 2.4401459e+10 0.13673195 0.038905268 -17.446437 58.932543 6524.5936 2.1911825e+10 0.14343961 0.039637827 -17.735735 58.723739 6527.2269 1.9442279e+10 0.14902170 0.040881177 -18.022211 58.511022 6529.8602 1.7367403e+10 0.15403388 0.043605956 -18.256438 58.338796 6532.4935 1.5793302e+10 0.15868054 0.047096434 -18.518803 58.140915 6535.1268 1.4608188e+10 0.16230504 0.048169303 -18.796628 57.925989 6537.7601 1.3578566e+10 0.16522124 0.049043567 -19.059909 57.717574 6540.3934 1.2563807e+10 0.16781445 0.051039943 -19.280358 57.538461 6543.0267 1.1479967e+10 0.16827875 0.051388895 -19.532974 57.333209 6545.6600 1.0420245e+10 0.16770656 0.052461480 -19.774597 57.136890 6548.2933 9.3637040e+09 0.16660661 0.053755230 -19.997486 56.955336 6550.9266 8.5169101e+09 0.16448686 0.055217368 -20.253706 56.740440 6553.5599 7.8184335e+09 0.16254058 0.055053619 -20.467395 56.556258 6556.1932 7.1594096e+09 0.16002000 0.053984723 -20.690882 56.362569 6558.8265 6.6545361e+09 0.15755231 0.052535032 -20.930744 56.154687 6561.4598 6.1727469e+09 0.15476715 0.051146105 -21.137414 55.975574 6564.0931 5.6962546e+09 0.15192911 0.048729406 -21.368702 55.763622 6566.7264 5.2667651e+09 0.15012465 0.046771963 -21.583324 55.564056 6569.3597 4.8591711e+09 0.14847468 0.044875835 -21.776796 55.384943 6571.9930 4.5378721e+09 0.14712414 0.044232067 -21.976576 55.205828 6574.6263 4.2825511e+09 0.14477336 0.042554193 -22.167642 55.022356 6577.2596 3.9943308e+09 0.14239035 0.039812594 -22.361872 54.831117 6579.8929 3.7008576e+09 0.13974674 0.036579626 -22.593352 54.616174 6582.5262 3.4171688e+09 0.13733913 0.035150598 -22.780625 54.429376 6585.1595 3.1648592e+09 0.13499047 0.033843246 -22.963032 54.246969 6587.7928 2.9748468e+09 0.13245599 0.033334027 -23.142145 54.067388 6590.4261 2.7981805e+09 0.12927107 0.030269423 -23.321259 53.881385 6593.0594 2.6150048e+09 0.12590816 0.027046979 -23.522453 53.672453 6595.6927 2.4301827e+09 0.12200107 0.025695408 -23.720028 53.467171 6598.3260 2.2681132e+09 0.11860947 0.025251510 -23.892253 53.288056 6600.9593 2.1287228e+09 0.11679506 0.026962070 -24.064478 53.102362 6603.5926 2.0167494e+09 0.11420769 0.026312440 -24.236686 52.916378 6606.2259 1.9020412e+09 0.11279209 0.027097975 -24.408523 52.730768 6608.8592 1.7832989e+09 0.10949337 0.023709653 -24.573858 52.551653 6611.4925 1.6767823e+09 0.10661931 0.024644365 -24.739194 52.368405 6614.1258 1.5848238e+09 0.10568025 0.023853796 -24.904531 52.182401 6616.7591 1.5079808e+09 0.10425426 0.023401446 -25.069868 51.996398 6619.3924 1.4315445e+09 0.10366554 0.024620604 -25.230404 51.810395 6622.0257 1.3464949e+09 0.10264582 0.024751141 -25.388850 51.624392 6624.6590 1.2659954e+09 0.10088919 0.025215093 -25.547297 51.438391 6627.2923 1.1925891e+09 0.098834777 0.025429739 -25.705719 51.252418 6629.9256 1.1257569e+09 0.097487777 0.025941745 -25.861791 51.066439 6632.5590 1.0631086e+09 0.095502629 0.026099368 -26.013349 50.880436 6635.1923 1.0020145e+09 0.093737066 0.026428619 -26.164907 50.700564 6637.8256 9.4871914e+08 0.092045867 0.025757080 -26.316464 50.518430 6640.4589 8.9599656e+08 0.091768596 0.025214510 -26.468021 50.332429 6643.0922 8.4787456e+08 0.091195761 0.025206533 -26.612782 50.146425 6645.7255 8.0082322e+08 0.089605912 0.025791536 -26.757451 49.960421 6648.3588 7.5851842e+08 0.087965806 0.027204442 -26.902117 49.774421 6650.9921 7.2323004e+08 0.086784580 0.026482349 -27.046758 49.588455 6653.6254 6.8834255e+08 0.085716318 0.027844952 -27.191416 49.402466 6656.2587 6.5822831e+08 0.083172591 0.028250451 -27.334842 49.216463 6658.8920 6.3087672e+08 0.080694426 0.031643009 -27.472622 49.030460 6661.5253 6.0048863e+08 0.078624001 0.032802483 -27.610402 48.844457 6664.1586 5.6709290e+08 0.076832012 0.031625864 -27.748181 48.658453 6666.7919 5.2991941e+08 0.076750218 0.027062903 -27.885963 48.472449 6669.4252 4.9262295e+08 0.075836356 0.027919013 -28.018056 48.280759 6672.0585 4.5979970e+08 0.076006954 0.026913497 -28.148937 48.090458 6674.6918 4.3162932e+08 0.074913809 0.029538357 -28.279802 47.904492 6677.3251 4.1110554e+08 0.072657651 0.031896073 -28.393446 47.742997 6679.9584 3.9175426e+08 0.072816835 0.029475802 -28.509908 47.577498 6682.5917 3.7218028e+08 0.073762283 0.030876618 -28.640799 47.391495 6685.2250 3.5341734e+08 0.073676641 0.032942486 -28.771690 47.205494 6687.8583 3.3062985e+08 0.071331373 0.033864220 -28.900340 47.019492 6690.4916 3.1271782e+08 0.069103987 0.033059526 -29.024343 46.833488 6693.1249 2.9321695e+08 0.068067956 0.031561241 -29.148344 46.647484 6695.7582 2.7661680e+08 0.067469262 0.029720201 -29.272346 46.461481 6698.3915 2.6212744e+08 0.066334944 0.030755201 -29.396348 46.275478 6701.0248 2.4391308e+08 0.064164744 0.031445844 -29.520326 46.089511 6703.6581 2.3150094e+08 0.063844200 0.035322031 -29.632064 45.917310 6706.2914 2.1961229e+08 0.063696868 0.038953581 -29.732443 45.757884 6708.9247 2.0964790e+08 0.062903281 0.041050558 -29.846630 45.570845 6711.5580 2.0013540e+08 0.060567738 0.041327100 -29.963744 45.380526 6714.1913 1.8692708e+08 0.057906446 0.047317792 -30.080857 45.194522 6716.8246 1.7569731e+08 0.055530078 0.049615948 -30.197969 45.008519 6719.4579 1.6282420e+08 0.053179424 0.050934781 -30.315082 44.822516 6722.0912 1.4980810e+08 0.053349410 0.050492429 -30.432066 44.636513 6724.7245 1.3893344e+08 0.049479065 0.043876412 -30.542290 44.450510 6727.3578 1.3079674e+08 0.047301276 0.040483658 -30.643582 44.279580 6729.9911 1.2718809e+08 0.046246206 0.040384815 -30.738056 44.120153 6732.6244 1.2122962e+08 0.044654311 0.043855165 -30.846271 43.937544 6735.2577 1.1602440e+08 0.044996974 0.049567036 -30.956482 43.751563 6737.8910 1.1196826e+08 0.046930155 0.056973982 -31.066706 43.565560 6740.5243 1.0775521e+08 0.046547807 0.064946103 -31.176930 43.379557 6743.1576 1.0465605e+08 0.042575720 0.072110875 -31.283581 43.189981 6745.7909 1.0116306e+08 0.039706290 0.078899392 -31.386916 42.997549 6748.4242 96725189. 0.035658241 0.069248863 -31.490252 42.811548 6751.0575 95845822. 0.032696849 0.073736002 -31.597826 42.625546 6753.6908 96516877. 0.029684987 0.075213001 -31.704502 42.443899 6756.3242 95480897. 0.026799154 0.075000996 -31.793057 42.284499 6758.9575 95933424. 0.026992396 0.075729982 -31.885320 42.112598 6761.5908 90058149. 0.029514711 0.078017033 -31.981892 41.926595 6764.2241 86569017. 0.034176473 0.079494019 -32.085227 41.740592 6766.8574 83589168. 0.035029466 0.081653109 -32.188562 41.554589 6769.4907 78762514. 0.029577492 0.085644330 -32.291102 41.368586 6772.1240 78297781. 0.024865446 0.092031245 -32.387548 41.182583 6774.7573 72779041. 0.020202320 0.098418161 -32.483995 40.996580 6777.3906 68858113. 0.015541491 0.10480508 -32.580442 40.810577 6780.0239 66709904. 0.010898091 0.11119199 -32.676888 40.624577 6782.6572 63304184. 0.0063026372 0.11757891 -32.773319 40.438601 6785.2905 61742688. 0.0017326270 0.12396582 -32.869752 40.252623 6787.9238 55419280. -0.0027844468 0.13035274 -32.966197 40.066620 6790.5571 53530710. -0.0073384891 0.13673965 -33.056741 39.880617 6793.1904 54080313. -0.011916824 0.14312657 -33.149090 39.694614 6795.8237 54038746. -0.016497450 0.14951348 -33.245535 39.508611 6798.4570 52512392. -0.021077229 0.15590040 -33.335412 39.322608 6801.0903 47139391. -0.025653223 0.16228731 -33.424968 39.136605 6803.7236 46809092. -0.030291427 0.16867423 -33.514522 38.950603 6806.3569 47533376. -0.034974875 0.17506115 -33.604063 38.764636 6808.9902 48376694. -0.039724854 0.18144806 -33.693613 38.578647 6811.6235 43632540. -0.044607416 0.18783498 -33.783171 38.392645 6814.2568 41185711. -0.050181302 0.19422189 -33.872729 38.206644 6816.8901 39490007. -0.060112657 0.20060881 -33.962284 38.020642 6819.5234 39413651. -0.060535667 0.20699572 -34.050160 37.834639 6822.1567 40858201. -0.056150510 0.21338264 -34.132830 37.648636