# # 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 = 50.806140 km # Date (UTC) = 2016-01-23T09:36:42.245 # Date (julian) = 2457410.90048894 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6521.9287 3.1049736e+10 0.16337573 0.038895763 110.40886 42.544001 6523.9850 2.8669017e+10 0.16798891 0.039423237 110.49185 42.414901 6526.0412 2.6639693e+10 0.17141364 0.039711299 110.57839 42.276766 6528.0975 2.4480488e+10 0.17554402 0.041519796 110.66984 42.126146 6530.1537 2.2074989e+10 0.17827776 0.044043867 110.76128 41.975540 6532.2099 1.9708836e+10 0.17989820 0.046859569 110.85271 41.824947 6534.2662 1.7727805e+10 0.17985356 0.048019016 110.93499 41.689432 6536.3224 1.6174225e+10 0.17880132 0.048078972 111.01337 41.560332 6538.3787 1.5007583e+10 0.17891257 0.049341064 111.08930 41.428776 6540.4349 1.4027521e+10 0.17824328 0.051059555 111.16307 41.295064 6542.4911 1.3103274e+10 0.17631652 0.051188698 111.24327 41.155200 6544.5474 1.2148925e+10 0.17465545 0.052088383 111.33472 41.004580 6546.6036 1.1246320e+10 0.17266736 0.052961197 111.41724 40.864824 6548.6598 1.0437594e+10 0.17065076 0.053864698 111.49102 40.735724 6550.7161 9.6789169e+09 0.16875241 0.055164661 111.56892 40.599392 6552.7723 8.9739578e+09 0.16681637 0.055392373 111.65499 40.448769 6554.8286 8.2820405e+09 0.16415419 0.054849767 111.73519 40.308413 6556.8848 7.6866966e+09 0.16075889 0.053883043 111.80896 40.179314 6558.9410 7.2187842e+09 0.15680876 0.052437423 111.88132 40.050214 6560.9973 6.8351961e+09 0.15305275 0.051375134 111.95048 39.921114 6563.0535 6.4561724e+09 0.15032074 0.049866459 112.02199 39.789016 6565.1098 6.0595677e+09 0.14800817 0.048193767 112.10806 39.638392 6567.1660 5.6688787e+09 0.14588887 0.046476834 112.18939 39.492511 6569.2222 5.3233859e+09 0.14388314 0.044866888 112.25855 39.358801 6571.2785 5.0624995e+09 0.14224410 0.044427219 112.32771 39.225605 6573.3347 4.8501618e+09 0.14017319 0.043388883 112.39687 39.096504 6575.3910 4.6365460e+09 0.13794755 0.041982461 112.46604 38.967402 6577.4472 4.3812933e+09 0.13557273 0.039517945 112.55113 38.818015 6579.5034 4.1238726e+09 0.13294876 0.036793740 112.63540 38.669197 6581.5597 3.8821978e+09 0.13063513 0.035427134 112.69994 38.540119 6583.6159 3.6689549e+09 0.12847300 0.034709922 112.76448 38.411042 6585.6721 3.4838758e+09 0.12622472 0.033433408 112.83324 38.281942 6587.7284 3.3001065e+09 0.12433829 0.033319751 112.90240 38.152840 6589.7846 3.1303352e+09 0.12196289 0.031489356 112.97157 38.023740 6591.8409 2.9828737e+09 0.11902131 0.028253095 113.04073 37.894640 6593.8971 2.8199094e+09 0.11628229 0.026268189 113.11344 37.753128 6595.9533 2.6482416e+09 0.11319629 0.025722435 113.18875 37.602507 6598.0096 2.4792628e+09 0.11096749 0.025402592 113.25964 37.467332 6600.0658 2.3275480e+09 0.10971866 0.025125184 113.32881 37.338230 6602.1221 2.2023828e+09 0.10844171 0.027412475 113.39544 37.209130 6604.1783 2.0909937e+09 0.10640702 0.026177143 113.45999 37.080030 6606.2345 1.9839094e+09 0.10554180 0.027082512 113.52453 36.950930 6608.2908 1.8846181e+09 0.10307942 0.023724684 113.58908 36.821830 6610.3470 1.7964609e+09 0.10036897 0.024334541 113.65591 36.688184 6612.4033 1.6973399e+09 0.098846322 0.024019458 113.73122 36.537561 6614.4595 1.6036318e+09 0.098100131 0.023623922 113.80111 36.394520 6616.5157 1.5124191e+09 0.096964705 0.023363243 113.86106 36.265420 6618.5720 1.4304702e+09 0.096587560 0.024202699 113.92184 36.136320 6620.6282 1.3660004e+09 0.096020500 0.024969637 113.98639 36.007220 6622.6844 1.3071520e+09 0.094802388 0.024575816 114.05088 35.878121 6624.7407 1.2492868e+09 0.093413317 0.025258794 114.11081 35.749019 6626.7969 1.1964062e+09 0.091642869 0.025575549 114.17075 35.619917 6628.8532 1.1441475e+09 0.090545673 0.026049487 114.23459 35.490817 6630.9094 1.0931604e+09 0.088972692 0.025930543 114.29914 35.361717 6632.9656 1.0473338e+09 0.087717370 0.026148133 114.36057 35.232617 6635.0219 1.0062539e+09 0.086265739 0.026403069 114.42051 35.103517 6637.0781 9.6246944e+08 0.084755442 0.026123152 114.48552 34.963484 6639.1344 9.1405657e+08 0.083800262 0.025580053 114.55546 34.812861 6641.1906 8.6345949e+08 0.084399578 0.025148948 114.61890 34.676207 6643.2468 8.1783999e+08 0.083820229 0.025229887 114.67884 34.547106 6645.3031 7.8479079e+08 0.082712589 0.025593663 114.73878 34.418006 6647.3593 7.5492306e+08 0.081435258 0.026626959 114.79872 34.288906 6649.4156 7.2561115e+08 0.080297490 0.027060871 114.85866 34.161242 6651.4718 6.9330791e+08 0.079893824 0.026845724 114.91860 34.036752 6653.5280 6.6242071e+08 0.079544204 0.027795254 114.97788 33.911606 6655.5843 6.3813912e+08 0.078281654 0.027851637 115.03321 33.782506 6657.6405 6.1561608e+08 0.076949590 0.029644079 115.08854 33.653406 6659.6967 5.8994019e+08 0.075778757 0.031689257 115.14836 33.524305 6661.7530 5.6316589e+08 0.074617304 0.032918461 115.20830 33.395203 6663.8092 5.3540069e+08 0.073562218 0.032258957 115.26453 33.266102 6665.8655 5.1892023e+08 0.073670841 0.027129040 115.31985 33.137002 6667.9217 5.0549656e+08 0.073085222 0.027442014 115.38446 32.994235 6669.9779 4.8489683e+08 0.072611496 0.027351290 115.45438 32.843644 6672.0342 4.6019809e+08 0.072496666 0.026899410 115.51297 32.709742 6674.0904 4.3292235e+08 0.071847322 0.029031064 115.56829 32.580640 6676.1467 4.0742165e+08 0.069833428 0.031808244 115.62362 32.454342 6678.2029 3.8543120e+08 0.069078936 0.030800908 115.67895 32.329852 6680.2591 3.6873905e+08 0.069506860 0.029497374 115.73428 32.203339 6682.3154 3.5150513e+08 0.070245816 0.030665500 115.78961 32.074239 6684.3716 3.3894634e+08 0.070347572 0.032672950 115.84494 31.945139 6686.4279 3.2466131e+08 0.069428999 0.034010015 115.90027 31.816038 6688.4841 3.1114565e+08 0.066932005 0.033896935 115.95560 31.687404 6690.5403 3.0164556e+08 0.065560474 0.033053941 116.01093 31.562915 6692.5966 2.8914425e+08 0.064708435 0.032072570 116.06626 31.438425 6694.6528 2.7623233e+08 0.064061672 0.030346084 116.12517 31.289571 6696.7090 2.6497136e+08 0.063762680 0.029970380 116.18406 31.140529 6698.7653 2.5071394e+08 0.062824518 0.031268258 116.23939 31.011429 6700.8215 2.3749224e+08 0.061357898 0.031277065 116.29472 30.882329 6702.8778 2.2778418e+08 0.061100878 0.033577627 116.34588 30.757399 6704.9340 2.1822249e+08 0.061493624 0.036636197 116.39660 30.632909 6706.9902 2.1300597e+08 0.061279133 0.040169840 116.45070 30.505028 6709.0465 2.0734246e+08 0.060855847 0.041102980 116.50603 30.375927 6711.1027 1.9974829e+08 0.059364173 0.040809097 116.55875 30.246826 6713.1590 1.9496813e+08 0.057569981 0.044261537 116.60946 30.117726 6715.2152 1.9121469e+08 0.055800258 0.047598684 116.66018 29.990460 6717.2714 1.8706289e+08 0.053918174 0.049857479 116.71090 29.865970 6719.3277 1.8327388e+08 0.052085015 0.051058525 116.76356 29.735494 6721.3839 1.8080217e+08 0.052481908 0.050419574 116.82273 29.584872 6723.4402 1.7050208e+08 0.051235857 0.049614424 116.87877 29.443922 6725.4964 1.5838549e+08 0.047413672 0.041265949 116.92949 29.319433 6727.5526 1.5250551e+08 0.046369177 0.040224126 116.98021 29.194015 6729.6089 1.4519023e+08 0.045607097 0.040639602 117.03093 29.064915 6731.6651 1.4363399e+08 0.043919904 0.043073710 117.08165 28.935965 6733.7213 1.3615564e+08 0.042938411 0.047840703 117.13236 28.811474 6735.7776 1.2654022e+08 0.044270126 0.050118896 117.18308 28.686984 6737.8338 1.2017814e+08 0.045589153 0.056791731 117.24110 28.539927 6739.8901 1.1639179e+08 0.045514094 0.063915819 117.30024 28.389426 6741.9463 1.1066526e+08 0.043513550 0.068457598 117.35096 28.264937 6744.0025 1.0501837e+08 0.038908677 0.077795377 117.40167 28.140448 6746.0588 99821790. 0.037765302 0.078303906 117.44854 28.015958 6748.1150 95641111. 0.033939129 0.067622013 117.49464 27.891468 6750.1713 94598885. 0.031236017 0.072296560 117.54946 27.749571 6752.2275 91595153. 0.028491356 0.073871221 117.60862 27.598980 6754.2837 87055156. 0.027279590 0.075757191 117.65724 27.469466 6756.3400 81351034. 0.024756937 0.075041711 117.70334 27.344975 6758.3962 80435940. 0.024680159 0.074543166 117.75240 27.217541 6760.4525 78371490. 0.025097158 0.076924075 117.80311 27.088441 6762.5087 78298541. 0.029446859 0.077230286 117.85528 26.951757 6764.5649 76770336. 0.032019236 0.079510350 117.90907 26.806514 6766.6212 72630409. 0.032519912 0.081118840 117.95817 26.673950 6768.6774 70005162. 0.028387970 0.083293494 118.00427 26.549460 6770.7336 65776079. 0.024270750 0.088659114 118.05038 26.424970 6772.7899 63378164. 0.020403222 0.093646397 118.09649 26.300480 6774.8461 61661015. 0.016536693 0.098633680 118.14469 26.168852 6776.9024 60826967. 0.012674554 0.10362096 118.19849 26.018231 6778.9586 59265918. 0.0087334885 0.10860825 118.24910 25.878434 6781.0148 55949051. 0.0046007727 0.11359553 118.29521 25.753944 6783.0711 52641703. 0.00027299793 0.11858281 118.34320 25.624361 6785.1273 48355135. -0.0045208255 0.12357010 118.39699 25.479119 6787.1836 47249244. -0.0096041301 0.12855738 118.44782 25.341896 6789.2398 48639658. -0.016072116 0.13354466 118.49392 25.217407 6791.2960 48696014. -0.037419042 0.13853195 118.54170 25.088403 6793.3523 48283193. -0.026021078 0.14351923 118.59549 24.943161 6795.4085 44523338. 0.0031967454 0.14850651 118.64653 24.803707