# # 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 = 53.721779 km # Date (UTC) = 2014-01-16T10:14:40.005 # Date (julian) = 2456673.92685190 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6505.6599 5.2755721e+10 0.070697988 0.033989925 99.827939 41.293095 6507.8677 4.8742034e+10 0.080899612 0.034655678 99.914435 41.156817 6510.0754 4.5046182e+10 0.091343239 0.035321432 99.998593 41.018202 6512.2832 4.1539082e+10 0.10202454 0.035987185 100.08527 40.879586 6514.4910 3.8165140e+10 0.11293096 0.036652939 100.17438 40.740969 6516.6988 3.4864591e+10 0.12403336 0.037318692 100.26107 40.604769 6518.9066 3.1799009e+10 0.13538277 0.037984446 100.34523 40.471106 6521.1144 2.8854964e+10 0.14691512 0.038650199 100.42939 40.335124 6523.3222 2.6163682e+10 0.15491620 0.039258966 100.51355 40.196507 6525.5300 2.3777340e+10 0.16025790 0.039721730 100.59299 40.067596 6527.7378 2.1787612e+10 0.16521938 0.041252100 100.66663 39.950642 6529.9456 2.0088703e+10 0.16952615 0.043741977 100.74174 39.830666 6532.1534 1.8523840e+10 0.17255002 0.046812299 100.82590 39.692051 6534.3611 1.7002053e+10 0.17387261 0.048045582 100.90947 39.553436 6536.5689 1.5511340e+10 0.17415910 0.048299539 100.98867 39.414821 6538.7767 1.4186728e+10 0.17465247 0.049534904 101.06837 39.276699 6540.9845 1.2924214e+10 0.17410362 0.051319212 101.15254 39.143033 6543.1923 1.1790521e+10 0.17291364 0.051432365 101.23552 39.010352 6545.4001 1.0867580e+10 0.17124960 0.052459151 101.30482 38.889067 6547.6079 1.0115533e+10 0.16934387 0.053518532 101.37413 38.767782 6549.8157 9.4827623e+09 0.16745233 0.054797520 101.45107 38.636952 6552.0235 8.8453847e+09 0.16553903 0.055580860 101.53028 38.503287 6554.2313 8.1730925e+09 0.16303377 0.054837233 101.60949 38.365903 6556.4390 7.5385717e+09 0.16092588 0.053948577 101.68869 38.227286 6558.6468 6.9930463e+09 0.15862541 0.052688117 101.75750 38.104504 6560.8546 6.5579456e+09 0.15586946 0.051503749 101.82247 37.987549 6563.0624 6.1899733e+09 0.15353643 0.049856158 101.89346 37.861445 6565.2702 5.8272110e+09 0.15122247 0.048011566 101.97267 37.722830 6567.4780 5.4515201e+09 0.14935328 0.046213023 102.04988 37.586207 6569.6858 5.0657402e+09 0.14782084 0.044897059 102.12414 37.452542 6571.8936 4.7298052e+09 0.14630469 0.044259219 102.19651 37.323611 6574.1014 4.4574159e+09 0.14392632 0.042806314 102.26581 37.202326 6576.3092 4.2306965e+09 0.14170526 0.041015535 102.33549 37.080126 6578.5170 4.0233150e+09 0.13900081 0.037833276 102.40975 36.946460 6580.7247 3.7934009e+09 0.13642303 0.035850980 102.48401 36.812528 6582.9325 3.5471754e+09 0.13440442 0.035040024 102.55826 36.673913 6585.1403 3.3189292e+09 0.13216165 0.033858581 102.63205 36.536033 6587.3481 3.1440619e+09 0.12976463 0.033235500 102.69270 36.419078 6589.5559 3.0037784e+09 0.12706905 0.031943096 102.75334 36.302123 6591.7637 2.8730160e+09 0.12375755 0.028340159 102.82386 36.169458 6593.9715 2.7330984e+09 0.12065445 0.026199025 102.89812 36.030843 6596.1793 2.5706571e+09 0.11758391 0.025726459 102.97238 35.895719 6598.3871 2.4193413e+09 0.11569423 0.025222361 103.04664 35.762054 6600.5949 2.2866141e+09 0.11552656 0.026212813 103.11156 35.636873 6602.8027 2.1761605e+09 0.11492720 0.026831677 103.17221 35.515585 6605.0104 2.0766145e+09 0.11431499 0.026673810 103.23611 35.389634 6607.2182 1.9737670e+09 0.11315224 0.025276052 103.30542 35.255969 6609.4260 1.8740754e+09 0.11031647 0.023832483 103.37164 35.128267 6611.6338 1.7912884e+09 0.10780994 0.024554265 103.43228 35.011314 6613.8416 1.7182727e+09 0.10686563 0.023882380 103.49334 34.893315 6616.0494 1.6492034e+09 0.10534568 0.023290053 103.56265 34.754699 6618.2572 1.5711128e+09 0.10481340 0.023965009 103.63196 34.616222 6620.4650 1.4794685e+09 0.10423176 0.024917039 103.70126 34.482557 6622.6728 1.3998164e+09 0.10294402 0.024578922 103.77048 34.349066 6624.8806 1.3288478e+09 0.10145702 0.025333673 103.83115 34.232077 6627.0884 1.2759436e+09 0.099274870 0.025350942 103.89179 34.115124 6629.2961 1.2232951e+09 0.098036076 0.026055560 103.95503 33.983013 6631.5039 1.1644596e+09 0.096201046 0.025981956 104.01939 33.844396 6633.7117 1.1062150e+09 0.094645999 0.026276514 104.08122 33.720503 6635.9195 1.0565875e+09 0.092900992 0.026537684 104.14186 33.603549 6638.1273 1.0194500e+09 0.091531509 0.025666096 104.20388 33.480392 6640.3351 9.8410749e+08 0.091160990 0.025229652 104.26824 33.346726 6642.5429 9.4009737e+08 0.090757858 0.025173913 104.33434 33.211322 6644.7507 8.8891404e+08 0.089675942 0.025424739 104.40364 33.072708 6646.9585 8.3962934e+08 0.088601776 0.026416286 104.46865 32.941266 6649.1663 8.0238201e+08 0.087600859 0.027404496 104.52496 32.824312 6651.3741 7.7689640e+08 0.087342660 0.026770827 104.58146 32.706980 6653.5818 7.4500293e+08 0.086962824 0.027822733 104.64581 32.573315 6655.7896 7.0740974e+08 0.085514911 0.027936497 104.71012 32.439755 6657.9974 6.7244813e+08 0.084180145 0.030058100 104.76646 32.322739 6660.2052 6.4635053e+08 0.082754351 0.031812534 104.82277 32.205784 6662.4130 6.2612353e+08 0.081303260 0.032812547 104.88123 32.077232 6664.6208 6.0127763e+08 0.080378375 0.029934593 104.94064 31.943567 6666.8286 5.6632675e+08 0.080279334 0.027070057 105.00338 31.806566 6669.0364 5.3500871e+08 0.079130171 0.028318332 105.06773 31.667951 6671.2442 5.0951750e+08 0.079269365 0.026868828 105.12683 31.543504 6673.4520 4.8996829e+08 0.078657360 0.028135168 105.18314 31.426549 6675.6598 4.7444316e+08 0.076514192 0.031062037 105.24052 31.303821 6677.8675 4.5534122e+08 0.075104191 0.031124906 105.29993 31.170156 6680.0753 4.3114364e+08 0.075268207 0.029457685 105.35933 31.036491 6682.2831 4.0763853e+08 0.075974598 0.030640866 105.41874 30.902826 6684.4909 3.8990169e+08 0.075957708 0.032679004 105.47720 30.774266 6686.6987 3.7575324e+08 0.074531902 0.034167606 105.53351 30.657312 6688.9065 3.6457062e+08 0.071448536 0.033994442 105.58983 30.540318 6691.1143 3.4797158e+08 0.070340879 0.032974297 105.64922 30.406744 6693.3221 3.2938519e+08 0.069430845 0.031493594 105.70863 30.273078 6695.5299 3.1422358e+08 0.069027211 0.029762142 105.76804 30.139413 6697.7377 3.0212945e+08 0.068371494 0.030184618 105.82745 30.005748 6699.9455 2.9612392e+08 0.066822706 0.030718045 105.88685 29.872083 6702.1532 2.8916181e+08 0.065193010 0.032999100 105.94626 29.738418 6704.3610 2.8164726e+08 0.065527878 0.036354843 105.99870 29.620411 6706.5688 2.7477954e+08 0.065307575 0.039436410 106.05068 29.503456 6708.7766 2.6467738e+08 0.064757376 0.040889292 106.10733 29.376001 6710.9844 2.5554514e+08 0.063037919 0.040689182 106.16674 29.242335 6713.1922 2.4114272e+08 0.060985339 0.044381784 106.22314 29.108670 6715.4000 2.2501924e+08 0.059043676 0.047787691 106.27759 28.975005 6717.6078 2.1058639e+08 0.056952963 0.049836674 106.33496 28.841340 6719.8156 1.9777538e+08 0.055444553 0.050594982 106.39437 28.707675 6722.0234 1.9112699e+08 0.055411135 0.050576316 106.44955 28.583500 6724.2312 1.8701065e+08 0.052625337 0.047996342 106.50154 28.466528 6726.4389 1.8427255e+08 0.049002313 0.040955326 106.55417 28.345212 6728.6467 1.7804368e+08 0.048287493 0.040544742 106.60863 28.211548 6730.8545 1.7246998e+08 0.046372585 0.041550569 106.66308 28.077888 6733.0623 1.6537007e+08 0.044921288 0.044262669 106.71753 27.944245 6735.2701 1.6212882e+08 0.045009303 0.049580177 106.77307 27.811686 6737.4779 1.5786992e+08 0.046328378 0.055657939 106.83247 27.682972 6739.6857 1.5039426e+08 0.046286901 0.063665711 106.89089 27.553267 6741.8935 1.4159933e+08 0.044054612 0.068306964 106.94534 27.419602 6744.1013 1.3166015e+08 0.039086137 0.077871746 106.99980 27.285937 6746.3091 1.2628039e+08 0.036705287 0.075394028 107.05426 27.152273 6748.5169 1.2144178e+08 0.033752241 0.069736107 107.10763 27.021280 6750.7246 1.1900690e+08 0.030790104 0.073241498 107.15528 26.904308 6752.9324 1.1430329e+08 0.027832923 0.073055469 107.20294 26.787336 6755.1402 1.0867285e+08 0.025744215 0.074543863 107.25638 26.660380 6757.3480 1.0287141e+08 0.023327617 0.075683904 107.31082 26.531687 6759.5558 98340051. 0.024044197 0.075954081 107.36528 26.398859 6761.7636 97275056. 0.026787549 0.078031313 107.41974 26.265194 6763.9714 96752083. 0.030392684 0.079396166 107.47419 26.131529 6766.1792 93347251. 0.031747609 0.080119067 107.52865 25.997864 6768.3870 89490260. 0.027904094 0.082248456 107.57919 25.864200 6770.5948 86430938. 0.023275187 0.088322272 107.62869 25.730535 6772.8026 83393531. 0.019069844 0.093677135 107.68202 25.600690 6775.0103 79962360. 0.014825236 0.099031999 107.73647 25.471976 6777.2181 73236160. 0.010316689 0.10438686 107.78721 25.339540 6779.4259 69388573. 0.0059186824 0.10974173 107.83671 25.205874 6781.6337 67478033. 0.0016105269 0.11509659 107.88984 25.075830 6783.8415 68223831. -0.0025323470 0.12045145 107.94430 24.947116 6786.0493 67415760. -0.0069367637 0.12580632 108.00110 24.799022 6788.2571 61418483. -0.012177734 0.13116118 108.05886 24.643074 6790.4649 57457904. -0.017679352 0.13651604 108.11338 24.508971 6792.6727 51178768. -0.024608500 0.14187091 108.16784 24.375307 6794.8805 50704264. -0.031759692 0.14722577 108.21754 24.246396 6797.0883 51035795. -0.042700462 0.15258063 108.26704 24.117681 6799.2960 50873003. -0.088924829 0.15793550 108.31655 23.984312 6801.5038 51341268. -0.056285171 0.16329036 108.36606 23.850646 6803.7116 48006969. 0.016552954 0.16864523 108.41556 23.721537