# # 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 = 57.565637 km # Date (UTC) = 2015-01-17T09:29:10.593 # Date (julian) = 2457039.89526149 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6507.5589 6.3564857e+10 0.081715597 0.034562568 112.44121 39.876236 6509.9005 5.8120998e+10 0.092760809 0.035268674 112.53047 39.729220 6512.2421 5.2850288e+10 0.10397319 0.035974780 112.61973 39.582203 6514.5837 4.7925314e+10 0.11536258 0.036680886 112.70846 39.435186 6516.9253 4.3453406e+10 0.12696833 0.037386992 112.79247 39.288167 6519.2669 3.9388489e+10 0.13879181 0.038093097 112.87649 39.142179 6521.6085 3.5635056e+10 0.15080739 0.038799203 112.96049 39.000415 6523.9501 3.2283479e+10 0.15736862 0.039414601 113.04278 38.862479 6526.2917 2.9464524e+10 0.16227104 0.039973946 113.12088 38.733840 6528.6334 2.6980190e+10 0.16677292 0.041944922 113.19906 38.603087 6530.9750 2.4692585e+10 0.16964811 0.045193624 113.27782 38.456070 6533.3166 2.2365341e+10 0.17289201 0.047654119 113.35768 38.309054 6535.6582 2.0091289e+10 0.17300527 0.047938782 113.44169 38.162037 6537.9998 1.8003392e+10 0.17401718 0.049156576 113.52570 38.015020 6540.3414 1.6095181e+10 0.17410253 0.051015385 113.60972 37.868001 6542.6830 1.4508736e+10 0.17271109 0.051261544 113.68767 37.730205 6545.0246 1.3243140e+10 0.17182985 0.052455787 113.75658 37.606162 6547.3662 1.2207598e+10 0.16978683 0.053426631 113.82888 37.476955 6549.7078 1.1272450e+10 0.16763793 0.054687613 113.91289 37.329938 6552.0494 1.0313595e+10 0.16540914 0.055574323 113.99522 37.182922 6554.3910 9.3785155e+09 0.16257136 0.054840586 114.07398 37.035905 6556.7327 8.5713587e+09 0.16020681 0.053905412 114.14865 36.896527 6559.0743 7.9244569e+09 0.15730936 0.052378800 114.21756 36.767889 6561.4159 7.3993905e+09 0.15448208 0.051167750 114.28882 36.636113 6563.7575 6.8996499e+09 0.15158179 0.049052139 114.36758 36.494348 6566.0991 6.3929726e+09 0.14919563 0.047126831 114.44634 36.350825 6568.4407 5.8788933e+09 0.14765898 0.045366559 114.52510 36.203807 6570.7823 5.4348313e+09 0.14612348 0.044593453 114.59766 36.064683 6573.1239 5.0816251e+09 0.14431056 0.043558046 114.66199 35.936027 6575.4655 4.7767199e+09 0.14199568 0.041907645 114.72997 35.804046 6577.8071 4.4932765e+09 0.13944542 0.038952569 114.80873 35.662279 6580.1487 4.1939529e+09 0.13687364 0.036383299 114.88566 35.518688 6582.4903 3.8928288e+09 0.13457205 0.035160358 114.95915 35.371697 6584.8320 3.6344581e+09 0.13233085 0.034062314 115.02858 35.232849 6587.1736 3.4312407e+09 0.12991520 0.033196824 115.09290 35.104191 6589.5152 3.2549668e+09 0.12733648 0.032023926 115.15969 34.972022 6591.8568 3.0756941e+09 0.12421894 0.028235135 115.23320 34.830257 6594.1984 2.8983575e+09 0.12110175 0.026063619 115.30337 34.693262 6596.5400 2.7378182e+09 0.11756122 0.025724819 115.36769 34.564623 6598.8816 2.5990071e+09 0.11457891 0.024986257 115.43372 34.432554 6601.2232 2.4684934e+09 0.11371139 0.027150810 115.50723 34.285537 6603.5648 2.3239107e+09 0.11206165 0.026328901 115.58074 34.140001 6605.9064 2.1793385e+09 0.11160483 0.027425465 115.65425 33.998235 6608.2480 2.0526116e+09 0.10955066 0.023725813 115.72255 33.861426 6610.5896 1.9517829e+09 0.10658672 0.024566372 115.78228 33.732789 6612.9313 1.8633902e+09 0.10532778 0.023624954 115.84477 33.601513 6615.2729 1.7707518e+09 0.10422549 0.023259927 115.91828 33.459746 6617.6145 1.6798600e+09 0.10335446 0.023642975 115.98770 33.321871 6619.9561 1.5993041e+09 0.10288105 0.024756600 116.04743 33.193235 6622.2977 1.5294142e+09 0.10160039 0.024678758 116.10817 33.063026 6624.6393 1.4588242e+09 0.099972181 0.025204522 116.17643 32.921258 6626.9809 1.3828518e+09 0.098024804 0.025341139 116.24469 32.778361 6629.3225 1.3005249e+09 0.097031913 0.026050794 116.31295 32.631342 6631.6641 1.2301621e+09 0.095293510 0.025998227 116.37856 32.491462 6634.0057 1.1735428e+09 0.093652559 0.026327261 116.43828 32.367419 6636.3473 1.1232932e+09 0.091996869 0.026414867 116.49915 32.240297 6638.6889 1.0783853e+09 0.090656757 0.025641627 116.56741 32.093280 6641.0306 1.0251327e+09 0.091013994 0.025148404 116.63567 31.947468 6643.3722 9.6341137e+08 0.090337242 0.025248811 116.70392 31.805700 6645.7138 9.1396098e+08 0.089029802 0.025786060 116.76791 31.669692 6648.0554 8.7171277e+08 0.087687844 0.027001356 116.82305 31.545650 6650.3970 8.3642139e+08 0.086558812 0.026346119 116.88012 31.418201 6652.7386 8.0121422e+08 0.085800528 0.027453739 116.94838 31.271183 6655.0802 7.6393705e+08 0.084463888 0.027643357 117.01344 31.129765 6657.4218 7.3703520e+08 0.082509755 0.029390402 117.06857 31.005722 6659.7634 7.0998651e+08 0.081127014 0.031675348 117.12458 30.880490 6662.1050 6.8405341e+08 0.079727886 0.032985343 117.19284 30.738723 6664.4466 6.5237572e+08 0.078800427 0.030571853 117.26024 30.596103 6666.7882 6.1361551e+08 0.078888505 0.027062195 117.32325 30.449086 6669.1299 5.8208370e+08 0.077846682 0.028222331 117.38423 30.307996 6671.4715 5.5649816e+08 0.078020537 0.026872067 117.43935 30.183952 6673.8131 5.3885498e+08 0.077310592 0.028675228 117.49512 30.058467 6676.1547 5.2393208e+08 0.074909510 0.031813415 117.55813 29.916701 6678.4963 5.0069147e+08 0.073928647 0.030604674 117.62114 29.774006 6680.8379 4.7430330e+08 0.074729804 0.029622354 117.68415 29.626989 6683.1795 4.4693021e+08 0.075453994 0.031451650 117.74501 29.486227 6685.5211 4.2493723e+08 0.075120803 0.033255264 117.80014 29.362183 6687.8627 4.0935582e+08 0.072739733 0.033861751 117.85552 29.236445 6690.2043 3.9581524e+08 0.070552544 0.033092447 117.91328 29.094678 6692.5459 3.8169802e+08 0.069426624 0.032131361 117.97204 28.952911 6694.8875 3.5996458e+08 0.068772527 0.030017080 118.03505 28.811144 6697.2292 3.4129367e+08 0.068171442 0.030120265 118.09580 28.674456 6699.5708 3.2638302e+08 0.066610712 0.031063779 118.15093 28.550414 6701.9124 3.1537201e+08 0.064609570 0.032748158 118.20634 28.424424 6704.2540 3.0766430e+08 0.064792293 0.036302272 118.26410 28.282657 6706.5956 2.9523388e+08 0.064601281 0.039482983 118.32294 28.140890 6708.9372 2.8623157e+08 0.063996667 0.041064155 118.38594 27.999122 6711.2788 2.7399110e+08 0.062205625 0.041009439 118.44737 27.855776 6713.6204 2.5915597e+08 0.060088205 0.045930535 118.50513 27.708759 6715.9620 2.4509111e+08 0.058283657 0.048362519 118.56003 27.570846 6718.3036 2.3321681e+08 0.056044994 0.050285299 118.61056 27.446803 6720.6452 2.2664034e+08 0.055564778 0.050345004 118.66269 27.318868 6722.9868 2.2049238e+08 0.054746081 0.049385201 118.72044 27.177101 6725.3285 2.1479401e+08 0.050360573 0.041370848 118.77820 27.035334 6727.6701 2.0875246e+08 0.049110723 0.040067666 118.83596 26.893567 6730.0117 2.0045014e+08 0.047898278 0.040394910 118.89371 26.751801 6732.3533 1.9117855e+08 0.046247009 0.043805247 118.95147 26.610035 6734.6949 1.8098624e+08 0.045919304 0.049311790 119.00923 26.468268 6737.0365 1.7110168e+08 0.047743637 0.054251837 119.06698 26.326501 6739.3781 1.6498997e+08 0.048223118 0.063289284 119.12473 26.184734 6741.7197 1.6180130e+08 0.046236755 0.067811366 119.18249 26.042967 6744.0613 1.5581115e+08 0.041207227 0.077840845 119.23522 25.916754 6746.4029 1.5006491e+08 0.038487675 0.074302724 119.28575 25.797305 6748.7445 1.4373322e+08 0.036012150 0.070933961 119.33732 25.666245 6751.0862 1.3939940e+08 0.032827547 0.073748096 119.38983 25.524478 6753.4278 1.3728763e+08 0.029900919 0.074361595 119.44556 25.382712 6755.7694 1.3121195e+08 0.027385146 0.074268027 119.50332 25.240946 6758.1110 1.2350523e+08 0.026435485 0.073939996 119.55734 25.099179 6760.4526 1.1606992e+08 0.026948948 0.076924328 119.60985 24.957411 6762.7942 1.1365274e+08 0.031768814 0.076769748 119.66659 24.815644 6765.1358 1.1276771e+08 0.034458773 0.079555984 119.72435 24.673877 6767.4774 1.0988094e+08 0.033281677 0.081441191 119.77737 24.532111 6769.8190 1.0359161e+08 0.028177908 0.086440739 119.82987 24.390344 6772.1606 98364618. 0.023894469 0.092120169 119.88762 24.253815 6774.5022 95273661. 0.019633120 0.097799599 119.94489 24.116811 6776.8438 92410375. 0.015381607 0.10347903 119.99739 23.975045 6779.1855 89343257. 0.011130966 0.10915846 120.04990 23.833279 6781.5271 84396175. 0.0068450713 0.11483789 120.10240 23.691511 6783.8687 82036220. 0.0026076266 0.12051732 120.15491 23.549743 6786.2103 81083981. -0.0015944457 0.12619675 120.20741 23.407977 6788.5519 77343946. -0.0058629426 0.13187618 120.26324 23.259568 6790.8935 72312758. -0.010181726 0.13755561 120.32450 23.100294 6793.2351 66812684. -0.014546057 0.14323504 120.37922 22.954099 6795.5767 62630087. -0.018895915 0.14891447 120.43173 22.812333 6797.9183 60915343. -0.023160498 0.15459390 120.48424 22.670567 6800.2599 60844103. -0.027367483 0.16027333 120.53674 22.528800 6802.6015 60897535. -0.031598849 0.16595276 120.58925 22.391957 6804.9431 59175891. -0.035982433 0.17163219 120.64175 22.255265 6807.2848 58075886. -0.040418044 0.17731162 120.69426 22.113498 6809.6264 53899079. -0.045227638 0.18299105 120.74789 21.969475 6811.9680 52273901. -0.050077823 0.18867048 120.80915 21.810202 6814.3096 49919125. -0.055430402 0.19434991 120.86346 21.659620 6816.6512 47276468. -0.061706650 0.20002934 120.91071 21.517853 6818.9928 47030608. -0.070040798 0.20570877 120.96108 21.379195 6821.3344 45101942. -0.10004100 0.21138820 121.01358 21.242680 6823.6760 45073569. -0.082809516 0.21706763 121.06789 21.086333 6826.0176 43466184. -0.041060978 0.22274706 121.12287 20.922543