# # 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 = 60.175013 km # Date (UTC) = 2013-12-18T06:56:12.940 # Date (julian) = 2456644.78903866 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6501.4811 5.7414763e+10 0.048555324 0.032729837 151.32029 29.875852 6503.7151 5.2867043e+10 0.057798944 0.033403474 151.37484 29.770664 6505.9490 4.8419470e+10 0.067287926 0.034077110 151.42938 29.665475 6508.1829 4.4344654e+10 0.077106150 0.034750746 151.48392 29.560286 6510.4169 4.0560111e+10 0.087264227 0.035424383 151.53846 29.455097 6512.6508 3.7157164e+10 0.097828087 0.036098019 151.59300 29.349908 6514.8847 3.4082018e+10 0.10881343 0.036771656 151.64755 29.244720 6517.1186 3.1391978e+10 0.12026953 0.037445292 151.70210 29.139517 6519.3526 2.8913386e+10 0.13211777 0.038118928 151.75664 29.034314 6521.5865 2.6621375e+10 0.14433350 0.038792565 151.80968 28.927603 6523.8204 2.4588797e+10 0.15166531 0.039382458 151.86033 28.818519 6526.0544 2.2823217e+10 0.15705409 0.039725094 151.91097 28.709435 6528.2883 2.1210988e+10 0.16315404 0.041671199 151.96482 28.603552 6530.5222 1.9683646e+10 0.16761637 0.044559824 152.01937 28.498363 6532.7562 1.8232339e+10 0.17171838 0.047315895 152.07291 28.393174 6534.9901 1.6905732e+10 0.17406043 0.048221529 152.12356 28.287985 6537.2240 1.5656750e+10 0.17484444 0.048790850 152.17421 28.182797 6539.4580 1.4496799e+10 0.17520114 0.050197989 152.22754 28.080280 6541.6919 1.3431095e+10 0.17402923 0.051102151 152.28209 27.978973 6543.9258 1.2483251e+10 0.17203028 0.051624883 152.33617 27.877194 6546.1598 1.1662750e+10 0.16981839 0.052595989 152.38682 27.772006 6548.3937 1.0884106e+10 0.16816359 0.053785218 152.43746 27.666818 6550.6276 1.0159407e+10 0.16632936 0.055142513 152.48811 27.561630 6552.8616 9.4968277e+09 0.16474551 0.055369911 152.53875 27.456441 6555.0955 8.8804902e+09 0.16285589 0.054773125 152.58939 27.351252 6557.3294 8.3185324e+09 0.16060329 0.053659620 152.64004 27.246063 6559.5634 7.7976348e+09 0.15813303 0.052323594 152.69069 27.140874 6561.7973 7.3157522e+09 0.15556027 0.050979793 152.74134 27.035679 6564.0312 6.8862956e+09 0.15272239 0.048757446 152.79200 26.930476 6566.2652 6.4766723e+09 0.15080993 0.047032885 152.84265 26.825273 6568.4991 6.0966899e+09 0.14926371 0.045312880 152.89330 26.720083 6570.7330 5.7405352e+09 0.14786376 0.044613866 152.94394 26.614895 6572.9670 5.4179975e+09 0.14624910 0.043676406 152.99346 26.509707 6575.2009 5.1208900e+09 0.14417568 0.042173155 153.04022 26.404518 6577.4348 4.8476638e+09 0.14174218 0.039537377 153.08697 26.299329 6579.6688 4.5951566e+09 0.13904607 0.036702855 153.13653 26.196950 6581.9027 4.3524932e+09 0.13661116 0.035323264 153.18717 26.095657 6584.1366 4.1339043e+09 0.13408413 0.034441091 153.23721 25.993761 6586.3705 3.9235328e+09 0.13167173 0.033166506 153.28397 25.888558 6588.6045 3.7310965e+09 0.12934624 0.033178062 153.33074 25.783355 6590.8384 3.5561408e+09 0.12626018 0.029502487 153.37978 25.678160 6593.0723 3.3898185e+09 0.12371437 0.027034961 153.43042 25.572971 6595.3063 3.2389350e+09 0.12103912 0.025655333 153.48110 25.467598 6597.5402 3.0734996e+09 0.11892902 0.025552257 153.53370 25.353641 6599.7741 2.8985639e+09 0.11822681 0.024976291 153.58630 25.239685 6602.0081 2.7275328e+09 0.11821858 0.027509743 153.63458 25.132212 6604.2420 2.5797456e+09 0.11716946 0.026214972 153.68133 25.027024 6606.4759 2.4575403e+09 0.11680878 0.026648716 153.72875 24.921834 6608.7099 2.3481060e+09 0.11421701 0.023713602 153.77940 24.816631 6610.9438 2.2451799e+09 0.11128555 0.024904762 153.83006 24.711428 6613.1777 2.1488586e+09 0.11035960 0.023638802 153.87835 24.608596 6615.4117 2.0536434e+09 0.10908765 0.023264198 153.92509 24.507303 6617.6456 1.9599105e+09 0.10819029 0.023653296 153.97184 24.405856 6619.8795 1.8762781e+09 0.10756357 0.024738131 154.01859 24.300667 6622.1135 1.7949386e+09 0.10630572 0.024727792 154.06534 24.195478 6624.3474 1.7222553e+09 0.10442987 0.025048270 154.11209 24.092130 6626.5813 1.6504690e+09 0.10270013 0.025850235 154.15885 23.990838 6628.8153 1.5839173e+09 0.10115475 0.026034100 154.20560 23.889545 6631.0492 1.5212310e+09 0.099200968 0.025935763 154.24883 23.784711 6633.2831 1.4611492e+09 0.097580017 0.026201684 154.29169 23.679509 6635.5171 1.4008572e+09 0.095742353 0.026477328 154.33785 23.571337 6637.7510 1.3375656e+09 0.094196109 0.025793599 154.39044 23.457381 6639.9849 1.2735041e+09 0.093741959 0.025276041 154.44270 23.344155 6642.2189 1.2090989e+09 0.093703721 0.025160652 154.48945 23.242862 6644.4528 1.1532449e+09 0.092736360 0.025392543 154.53620 23.141569 6646.6867 1.1058605e+09 0.091804248 0.026275616 154.58103 23.038363 6648.9207 1.0646663e+09 0.090715145 0.027580572 154.62389 22.933174 6651.1546 1.0230999e+09 0.090480970 0.026602633 154.66674 22.827986 6653.3885 9.8475118e+08 0.090092502 0.027724025 154.71320 22.726385 6655.6225 9.5233255e+08 0.088535915 0.027867414 154.75996 22.625078 6657.8564 9.1365864e+08 0.086988299 0.029894487 154.80723 22.519249 6660.0903 8.7445314e+08 0.085572275 0.031708089 154.85545 22.405292 6662.3242 8.2769663e+08 0.084203207 0.032862350 154.90355 22.292003 6664.5582 7.8935585e+08 0.083242171 0.030163734 154.95030 22.186814 6666.7921 7.5889359e+08 0.082990227 0.027062948 154.99706 22.081625 6669.0260 7.2717663e+08 0.081691668 0.028328954 155.04183 21.978421 6671.2600 7.0274483e+08 0.081685173 0.026869053 155.08468 21.877128 6673.4939 6.7454402e+08 0.081015230 0.028197894 155.12754 21.775835 6675.7278 6.5062305e+08 0.078790319 0.031192439 155.17039 21.674542 6677.9618 6.2822369e+08 0.077372612 0.030990957 155.21325 21.573250 6680.1957 6.0238027e+08 0.077459593 0.029483677 155.25811 21.467201 6682.4296 5.7969482e+08 0.077999853 0.030752803 155.30633 21.353244 6684.6636 5.5690929e+08 0.077847878 0.032687765 155.35440 21.240111 6686.8975 5.3632248e+08 0.076145523 0.034283265 155.40116 21.134908 6689.1314 5.1878677e+08 0.073080167 0.033897712 155.44791 21.029704 6691.3654 5.0235447e+08 0.071969047 0.032915060 155.49543 20.919884 6693.5993 4.8054798e+08 0.070993757 0.031398492 155.54365 20.805927 6695.8332 4.6054309e+08 0.070753639 0.029706419 155.59054 20.695086 6698.0672 4.4456107e+08 0.069985983 0.030310007 155.63340 20.593793 6700.3011 4.2854766e+08 0.068308559 0.030891050 155.67625 20.492500 6702.5350 4.1473279e+08 0.067200282 0.033303953 155.71977 20.382608 6704.7690 3.9520974e+08 0.067565870 0.036555154 155.76359 20.268652 6707.0029 3.7767382e+08 0.067292975 0.040186412 155.80703 20.159731 6709.2368 3.6673493e+08 0.066595699 0.040981911 155.84989 20.058438 6711.4708 3.5512493e+08 0.064657250 0.041227826 155.89274 19.957144 6713.7047 3.4337477e+08 0.062453213 0.046235336 155.94005 19.845317 6715.9386 3.2892979e+08 0.060631686 0.048338584 155.98827 19.731344 6718.1726 3.1340996e+08 0.058460923 0.050081155 156.03354 19.624338 6720.4065 3.0350917e+08 0.057669085 0.050372668 156.07640 19.523046 6722.6404 2.9397258e+08 0.057115187 0.049813479 156.11925 19.421753 6724.8744 2.8287175e+08 0.053092500 0.042625265 156.16307 19.308016 6727.1083 2.6984081e+08 0.051173501 0.040816121 156.20690 19.194060 6729.3422 2.5870668e+08 0.050599718 0.040817332 156.25005 19.088982 6731.5761 2.4939169e+08 0.048707014 0.042896667 156.29290 18.987689 6733.8101 2.4366339e+08 0.047444362 0.048322473 156.33648 18.885284 6736.0440 2.3815214e+08 0.048893955 0.050521400 156.38469 18.775710 6738.2779 2.2953898e+08 0.050033932 0.058851308 156.43290 18.666136 6740.5119 2.2474487e+08 0.049362706 0.064924817 156.47737 18.552826 6742.7458 2.1388287e+08 0.046228246 0.070428058 156.52120 18.438869 6744.9797 2.0426262e+08 0.042627582 0.078551218 156.56225 18.332138 6747.2137 1.9686010e+08 0.038103236 0.067287601 156.60122 18.230832 6749.4476 1.8887013e+08 0.037159073 0.072155378 156.64026 18.129419 6751.6815 1.8432245e+08 0.033831070 0.073999830 156.68844 18.015511 6753.9155 1.7571609e+08 0.032208819 0.075939923 156.73665 17.901556 6756.1494 1.6611894e+08 0.029714626 0.074551347 156.78169 17.787599 6758.3833 1.5922897e+08 0.029490888 0.074515938 156.82553 17.673642 6760.6173 1.5313548e+08 0.030012146 0.077238374 156.86936 17.561621 6762.8512 1.4935101e+08 0.034961804 0.076677789 156.91318 17.452048 6765.0851 1.4677702e+08 0.037529843 0.079546734 156.95771 17.341773 6767.3191 1.4106044e+08 0.036751215 0.081618495 157.00592 17.227817 6769.5530 1.3552925e+08 0.031871325 0.085795524 157.05413 17.113861 6771.7869 1.3153680e+08 0.027834453 0.091213792 157.09850 16.999904 6774.0209 1.2803850e+08 0.023798478 0.096632060 157.14233 16.885948 6776.2548 1.2342676e+08 0.019784785 0.10205033 157.18616 16.774607 6778.4887 1.1712806e+08 0.015795251 0.10746860 157.22998 16.665033 6780.7227 1.1231944e+08 0.011796570 0.11288686 157.27381 16.554078 6782.9566 1.0816873e+08 0.0078027441 0.11830513 157.31764 16.440122 6785.1905 1.0647967e+08 0.0037933494 0.12372340 157.36148 16.326312 6787.4245 1.0431703e+08 -0.00020174617 0.12914167 157.40531 16.216723 6789.6584 1.0150565e+08 -0.0041684631 0.13455994 157.44915 16.107133 6791.8923 97915272. -0.0080968386 0.13997820 157.49298 15.994258 6794.1263 95315331. -0.012010678 0.14539647 157.53681 15.880302 6796.3602 92444388. -0.015910458 0.15081474 157.58064 15.768409 6798.5941 87447850. -0.019785291 0.15623301 157.62447 15.658836 6800.8281 84525390. -0.023673395 0.16165128 157.66830 15.548433 6803.0620 81284929. -0.027560139 0.16706954 157.71212 15.434477 6805.2959 79940362. -0.031462094 0.17248781 157.75595 15.320520 6807.5298 81438082. -0.035394325 0.17790608 157.79580 15.210542 6809.7638 81354753. -0.039320546 0.18332435 157.83526 15.100969 6811.9977 78527210. -0.043226647 0.18874262 157.88137 14.978457 6814.2316 73685492. -0.047115770 0.19416088 157.93145 14.848219 6816.4656 68803632. -0.051011311 0.19957915 157.97760 14.730994 6818.6995 64392825. -0.054917905 0.20499742 158.02143 14.621421 6820.9334 65014216. -0.058893759 0.21041569 158.06526 14.511848 6823.1674 65831452. -0.062896297 0.21583396 158.10909 14.402275 6825.4013 60573632. -0.066890977 0.22125222 158.15300 14.291325 6827.6352 58391120. -0.070986472 0.22667049 158.19809 14.161085 6829.8692 53833829. -0.075193156 0.23208876 158.24309 14.032299 6832.1031 49059608. -0.080187454 0.23750703 158.28691 13.922725 6834.3370 45960883. -0.089894393 0.24292530 158.33074 13.813152 6836.5710 41874466. -0.089846279 0.24834356 158.37555 13.691231 6838.8049 44737283. -0.083455853 0.25376183 158.42063 13.566002