# # 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 = 62.322358 km # Date (UTC) = 2012-01-08T10:46:49.789 # Date (julian) = 2455934.94918738 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6502.7214 1.5143514e+11 0.060341569 0.033103841 89.700354 41.082134 6505.6388 1.1624867e+11 0.072373589 0.033983582 89.804945 40.927588 6508.5563 9.0493892e+10 0.084413190 0.034863324 89.907977 40.773041 6511.4737 7.3126976e+10 0.096733326 0.035743066 90.004768 40.635331 6514.3911 6.0871560e+10 0.10950077 0.036622807 90.101529 40.497789 6517.3085 5.1571109e+10 0.12278004 0.037502549 90.204561 40.348967 6520.2259 4.3849882e+10 0.13651565 0.038382290 90.307596 40.198606 6523.1434 3.7420088e+10 0.14754941 0.039214647 90.410642 40.044037 6526.0608 3.2416759e+10 0.15273904 0.039731824 90.510697 39.889479 6528.9782 2.8424623e+10 0.15813268 0.042218506 90.608003 39.734933 6531.8956 2.5111766e+10 0.16309005 0.046532300 90.709740 39.580386 6534.8131 2.2248707e+10 0.16552163 0.048172004 90.812617 39.425994 6537.7305 1.9726743e+10 0.16673780 0.049029620 90.909927 39.277170 6540.6479 1.7540534e+10 0.16782768 0.051160195 91.007236 39.126746 6543.5653 1.5689680e+10 0.16795715 0.051530270 91.104542 38.972201 6546.4828 1.4134024e+10 0.16814145 0.052861764 91.201848 38.817656 6549.4002 1.2805201e+10 0.16777041 0.054374105 91.299154 38.663110 6552.3176 1.1659144e+10 0.16595384 0.055506823 91.396460 38.508563 6555.2350 1.0625791e+10 0.16221516 0.054655877 91.493766 38.354238 6558.1525 9.7010519e+09 0.15775992 0.053109388 91.591076 38.205415 6561.0699 8.8519222e+09 0.15297618 0.051338242 91.686715 38.054923 6563.9873 8.1026182e+09 0.14944725 0.048786276 91.778296 37.900378 6566.9047 7.4296619e+09 0.14711719 0.046671079 91.873002 37.745820 6569.8222 6.8320197e+09 0.14515144 0.044905934 91.970323 37.591251 6572.7396 6.3449137e+09 0.14296167 0.043806616 92.054947 37.454460 6575.6570 5.9301935e+09 0.14014125 0.041715523 92.136355 37.322175 6578.5744 5.5524895e+09 0.13696847 0.037742520 92.226230 37.171360 6581.4919 5.1590925e+09 0.13412369 0.035447668 92.317811 37.016813 6584.4093 4.7512758e+09 0.13174882 0.034292561 92.409396 36.862267 6587.3267 4.3652599e+09 0.12956894 0.033230754 92.499045 36.709657 6590.2441 4.0217848e+09 0.12697178 0.030607951 92.584905 36.560836 6593.1616 3.7272212e+09 0.12377656 0.026952026 92.674147 36.408630 6596.0790 3.4662990e+09 0.11995288 0.025726915 92.765727 36.254083 6598.9964 3.2363317e+09 0.11704932 0.024931448 92.852479 36.099537 6601.9138 3.0124038e+09 0.11645921 0.027476050 92.938896 35.945544 6604.8312 2.7956900e+09 0.11462677 0.026564845 93.030490 35.796700 6607.7487 2.5892976e+09 0.11204686 0.024228646 93.120075 35.645859 6610.6661 2.3975725e+09 0.10733876 0.024639420 93.205935 35.491313 6613.5835 2.2414396e+09 0.10477810 0.023787686 93.286039 35.350196 6616.5009 2.1155853e+09 0.10188972 0.023360922 93.362358 35.217910 6619.4184 2.0019645e+09 0.10012696 0.024626860 93.444762 35.071428 6622.3358 1.8897706e+09 0.098177403 0.024668615 93.530622 34.916884 6625.2532 1.7744312e+09 0.096267386 0.025699771 93.611382 34.767435 6628.1706 1.6612178e+09 0.094531118 0.025772378 93.692339 34.617789 6631.0881 1.5635791e+09 0.092850139 0.025939712 93.778199 34.463243 6634.0055 1.4725907e+09 0.091348843 0.026327243 93.864059 34.310968 6636.9229 1.3868015e+09 0.089912020 0.026191347 93.949919 34.162146 6639.8403 1.3086311e+09 0.089640692 0.025327718 94.032060 34.009606 6642.7578 1.2284409e+09 0.089902325 0.025182706 94.112195 33.855058 6645.6752 1.1545912e+09 0.088706089 0.025767985 94.192340 33.705659 6648.5926 1.0868479e+09 0.087350630 0.027360981 94.272485 33.555928 6651.5100 1.0215684e+09 0.086794588 0.026875035 94.352620 33.401381 6654.4275 9.6597130e+08 0.085850007 0.027854123 94.432754 33.249174 6657.3449 9.1125958e+08 0.083522013 0.029301167 94.512889 33.100351 6660.2623 8.5900711e+08 0.081636556 0.031864424 94.593024 32.947741 6663.1797 8.0830693e+08 0.079801856 0.032433404 94.673158 32.793194 6666.0972 7.5711763e+08 0.079182316 0.026927528 94.753293 32.643884 6669.0146 7.1508991e+08 0.077599042 0.028340726 94.832469 32.495061 6671.9320 6.7443758e+08 0.077458676 0.026878630 94.906878 32.346238 6674.8494 6.3781265e+08 0.075781610 0.029671342 94.983695 32.195009 6677.7669 6.0694448e+08 0.073229787 0.031268054 95.063830 32.040463 6680.6843 5.7427999e+08 0.073355211 0.029589181 95.140112 31.889773 6683.6017 5.4377827e+08 0.073786814 0.032070383 95.214526 31.740950 6686.5191 5.1580083e+08 0.072578201 0.034063121 95.288936 31.592127 6689.4366 4.8729797e+08 0.069335258 0.033623058 95.364375 31.442274 6692.3540 4.6075928e+08 0.068332082 0.032354278 95.444521 31.287705 6695.2714 4.3664045e+08 0.067820472 0.029809621 95.522188 31.135623 6698.1888 4.1567842e+08 0.067009261 0.030477000 95.596602 30.986800 6701.1062 3.9789822e+08 0.064756427 0.031565343 95.671013 30.837978 6704.0237 3.8073235e+08 0.064702127 0.036189178 95.745422 30.689156 6706.9411 3.6112487e+08 0.064658117 0.040084310 95.814463 30.540334 6709.8585 3.3996974e+08 0.063755059 0.040586482 95.884247 30.391511 6712.7759 3.2154765e+08 0.061181265 0.043270630 95.958657 30.242688 6715.6934 3.0537290e+08 0.058628906 0.048087747 96.033066 30.091322 6718.6108 2.9322407e+08 0.055662109 0.050763679 96.107476 29.936776 6721.5282 2.8305553e+08 0.055559472 0.050463054 96.177896 29.786221 6724.4456 2.7124794e+08 0.052253925 0.046205265 96.246585 29.637399 6727.3631 2.5672032e+08 0.049142801 0.040476678 96.330813 29.468371 6730.2805 2.4087621e+08 0.047788736 0.040763489 96.408959 29.307251 6733.1979 2.2788003e+08 0.046024634 0.044998842 96.477649 29.158428 6736.1153 2.1638170e+08 0.047189405 0.050791051 96.546337 29.009605 6739.0328 2.0842765e+08 0.048365260 0.062866647 96.615026 28.860783 6741.9502 2.0262184e+08 0.045966210 0.068468681 96.689031 28.711940 6744.8676 1.9496457e+08 0.040680423 0.078464487 96.764190 28.559256 6747.7850 1.8670073e+08 0.036084911 0.067090904 96.842693 28.389170 6750.7025 1.7800157e+08 0.033244505 0.073203610 96.914793 28.232950 6753.6199 1.7014387e+08 0.030002374 0.074983347 96.983477 28.084128 6756.5373 1.6548627e+08 0.026742442 0.075549482 97.052166 27.935305 6759.4547 1.6060387e+08 0.027313866 0.075929689 97.121372 27.783122 6762.3722 1.5282662e+08 0.031652956 0.077450526 97.193332 27.613036 6765.2896 1.4243252e+08 0.035117791 0.079584057 97.263230 27.456334 6768.2070 1.3286156e+08 0.032233329 0.081600878 97.331914 27.307512 6771.1244 1.2521080e+08 0.026333972 0.089606936 97.400603 27.158690 6774.0419 1.2149944e+08 0.020999942 0.096682972 97.469734 27.006992 6776.9593 1.1724517e+08 0.015662487 0.10375901 97.541694 26.836905 6779.8767 1.1027868e+08 0.010292209 0.11083505 97.611669 26.679718 6782.7941 1.0625075e+08 0.0049455972 0.11791108 97.680358 26.530895 6785.7116 1.0252793e+08 -0.00039899469 0.12498712 97.751859 26.363794 6788.6290 99619973. -0.0057264130 0.13206315 97.822735 26.202640 6791.5464 96126276. -0.011065349 0.13913919 97.891419 26.059542 6794.4638 91190064. -0.016447390 0.14621523 97.962016 25.900685 6797.3812 85278305. -0.021875086 0.15329126 98.033976 25.730599 6800.2987 81014869. -0.027265204 0.16036730 98.105936 25.560513 6803.2161 78285574. -0.032600521 0.16744334 98.173158 25.401625 6806.1335 75054862. -0.037962459 0.17451937 98.236122 25.252801 6809.0509 73830272. -0.043222307 0.18159541 98.306099 25.087402 6811.9684 70387005. -0.048608479 0.18867145 98.378059 24.918957 6814.8858 68439280. -0.053894506 0.19574748 98.450019 24.755413 6817.8032 66686940. -0.059150095 0.20282352 98.515481 24.602504 6820.7206 64602037. -0.064427092 0.20989955 98.578444 24.453683 6823.6381 62239700. -0.069745633 0.21697559 98.650181 24.284122 6826.5555 58218876. -0.075271238 0.22405163 98.719219 24.116958 6829.4729 55560304. -0.080733303 0.23112766 98.784636 23.953412 6832.3903 53833162. -0.086159675 0.23820370 98.856060 23.783862 6835.3078 54225053. -0.091381981 0.24527974 98.928020 23.616323 6838.2252 52946765. -0.096914729 0.25235577 98.999979 23.452779 6841.1426 49291328. -0.10299625 0.25943181 99.066307 23.283604 6844.0600 45100357. -0.10958282 0.26650785 99.133897 23.113518 6846.9775 43569906. -0.11612035 0.27358388 99.205857 22.943432 6849.8949 44299336. -0.12269103 0.28065992 99.272560 22.778601 6852.8123 43928076. -0.13156949 0.28773595 99.339775 22.613258 6855.7297 41618763. -0.15733574 0.29481199 99.411735 22.443172 6858.6472 41535789. -0.14744974 0.30188803 99.478813 22.277967 6864.4820 41860555. -0.12028148 0.31604010 99.609646 21.942913