# # 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 = 52.755452 km # Date (UTC) = 2013-01-26T10:09:59.006 # Date (julian) = 2456318.92359961 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6512.5832 5.2074907e+10 0.10917738 0.036077650 96.029226 51.854618 6514.5439 4.8334572e+10 0.11903001 0.036668878 96.175415 51.695348 6516.5045 4.4394121e+10 0.12890748 0.037260105 96.328523 51.528387 6518.4652 4.0369140e+10 0.13879510 0.037851333 96.476220 51.356078 6520.4258 3.6739560e+10 0.14882112 0.038442560 96.611608 51.200694 6522.3865 3.3730387e+10 0.15800514 0.039018450 96.734709 51.062204 6524.3471 3.1034350e+10 0.16296425 0.039550271 96.867983 50.905063 6526.3078 2.8606610e+10 0.16656053 0.039990729 97.009554 50.732714 6528.2684 2.6500330e+10 0.17055292 0.041655403 97.129269 50.591726 6530.2290 2.4582517e+10 0.17386823 0.044149351 97.247244 50.453236 6532.1897 2.2762207e+10 0.17629351 0.046842655 97.388235 50.281716 6534.1503 2.0927942e+10 0.17681545 0.047986611 97.521487 50.121299 6536.1110 1.9209955e+10 0.17613349 0.047889796 97.639458 49.982811 6538.0716 1.7912081e+10 0.17722090 0.049191558 97.755368 49.842259 6540.0323 1.6898138e+10 0.17740910 0.050869346 97.868212 49.698639 6541.9929 1.5814166e+10 0.17545659 0.051004536 97.991270 49.542020 6543.9536 1.4654296e+10 0.17352640 0.051632159 98.126689 49.369671 6545.9142 1.3521633e+10 0.17147052 0.052463757 98.239172 49.225352 6547.8749 1.2540269e+10 0.17010267 0.053620054 98.346886 49.086862 6549.8355 1.1836453e+10 0.16823895 0.054817716 98.459105 48.943868 6551.7961 1.1173666e+10 0.16614992 0.055515209 98.571949 48.800249 6553.7568 1.0445853e+10 0.16386639 0.054954641 98.700011 48.629986 6555.7174 9.7164038e+09 0.16187306 0.054250551 98.822709 48.467946 6557.6781 9.0338487e+09 0.16014249 0.053441087 98.930423 48.329458 6559.6387 8.4606481e+09 0.15773334 0.052315087 99.036320 48.189152 6561.5994 7.9883182e+09 0.15504188 0.051077326 99.138903 48.045532 6563.5600 7.5644220e+09 0.15240866 0.049280562 99.241489 47.901912 6565.5207 7.1857665e+09 0.15022162 0.047727183 99.344076 47.758293 6567.4813 6.7903350e+09 0.14844664 0.046210234 99.455983 47.604424 6569.4419 6.3622753e+09 0.14664368 0.044881188 99.579059 47.438269 6571.4026 5.9453005e+09 0.14509671 0.044393319 99.685132 47.290816 6573.3632 5.5739207e+09 0.14318237 0.043365991 99.787719 47.147198 6575.3239 5.2825308e+09 0.14105125 0.042049750 99.885787 47.003577 6577.2845 5.0176007e+09 0.13856686 0.039773445 99.983241 46.859956 6579.2452 4.7656885e+09 0.13559577 0.036935714 100.08547 46.716338 6581.2058 4.5271583e+09 0.13300488 0.035534284 100.18806 46.572720 6583.1665 4.2985241e+09 0.13081725 0.034937409 100.28561 46.434132 6585.1271 4.0817226e+09 0.12840797 0.033869151 100.38290 46.295481 6587.0878 3.8736597e+09 0.12588409 0.033177813 100.47523 46.151862 6589.0484 3.6838841e+09 0.12317530 0.032949954 100.56797 46.008246 6591.0090 3.5021267e+09 0.12018754 0.029191702 100.66541 45.864656 6592.9697 3.3279882e+09 0.11790123 0.027131659 100.76218 45.721062 6594.9303 3.1545516e+09 0.11565338 0.025661813 100.85450 45.577442 6596.8910 2.9926032e+09 0.11340698 0.025723223 100.94683 45.433822 6598.8516 2.8472475e+09 0.11178589 0.025000568 101.03916 45.290203 6600.8123 2.7122749e+09 0.11185955 0.026659758 101.13148 45.147777 6602.7729 2.5823193e+09 0.11114196 0.026857056 101.22381 45.009287 6604.7336 2.4498987e+09 0.11036904 0.026506842 101.31614 44.869345 6606.6942 2.3324927e+09 0.10954759 0.026256492 101.40846 44.725727 6608.6549 2.2214408e+09 0.10702968 0.023715057 101.49908 44.582108 6610.6155 2.1201511e+09 0.10435765 0.024591074 101.58627 44.438488 6612.5761 2.0231628e+09 0.10295269 0.023890278 101.67346 44.294879 6614.5368 1.9269336e+09 0.10193099 0.023570665 101.76064 44.151289 6616.4974 1.8369683e+09 0.10052498 0.023360371 101.84783 44.007686 6618.4581 1.7541492e+09 0.099877473 0.024116701 101.93503 43.864068 6620.4187 1.6761948e+09 0.099118250 0.024902132 102.02223 43.722933 6622.3794 1.6053480e+09 0.097753884 0.024657017 102.10943 43.584442 6624.3400 1.5366702e+09 0.095958788 0.025044319 102.19662 43.443210 6626.3007 1.4712513e+09 0.094495575 0.026207833 102.28382 43.299591 6628.2613 1.4043474e+09 0.092913002 0.025809188 102.36802 43.155972 6630.2220 1.3455699e+09 0.091357073 0.025928849 102.45009 43.012351 6632.1826 1.2900977e+09 0.089527144 0.026054240 102.53215 42.868732 6634.1432 1.2294793e+09 0.087942744 0.026337291 102.61422 42.725114 6636.1039 1.1707447e+09 0.086491696 0.026509409 102.69979 42.581515 6638.0645 1.1091059e+09 0.085717458 0.025668831 102.78697 42.437926 6640.0252 1.0642694e+09 0.085794823 0.025267571 102.85853 42.312650 6641.9858 1.0312850e+09 0.086011411 0.025151648 102.92447 42.193946 6643.9465 1.0002453e+09 0.085136001 0.025335524 102.99786 42.063749 6645.9071 9.6535938e+08 0.084368531 0.025876634 103.07993 41.920129 6647.8678 9.2705385e+08 0.083597105 0.026894660 103.16200 41.776509 6649.8284 8.8608257e+08 0.082951937 0.026491771 103.24406 41.632891 6651.7891 8.4668139e+08 0.082551975 0.027088859 103.32325 41.489272 6653.7497 8.1103368e+08 0.082075392 0.027908429 103.40019 41.345654 6655.7103 7.7696105e+08 0.080638987 0.027903731 103.47713 41.205177 6657.6710 7.4579031e+08 0.079240704 0.029679434 103.55406 41.066687 6659.6316 7.1073600e+08 0.077941451 0.031702839 103.63100 40.924797 6661.5923 6.7654513e+08 0.076682071 0.032836609 103.70794 40.781179 6663.5529 6.4868881e+08 0.075516571 0.032329984 103.77704 40.652196 6665.5136 6.2646966e+08 0.075279150 0.027705631 103.84298 40.529095 6667.4742 6.0976110e+08 0.074652115 0.027277644 103.91374 40.397006 6669.4349 5.9066346e+08 0.073640540 0.027909073 103.99067 40.253416 6671.3955 5.6789161e+08 0.073554173 0.026870985 104.06509 40.112319 6673.3561 5.4226126e+08 0.073037302 0.027991864 104.13690 39.973829 6675.3168 5.1875547e+08 0.071334861 0.030405134 104.21148 39.832574 6677.2774 4.9540926e+08 0.069587674 0.031963809 104.28842 39.688956 6679.2381 4.7402455e+08 0.069189161 0.030071029 104.36233 39.545336 6681.1987 4.5116087e+08 0.070257638 0.029809821 104.43414 39.401716 6683.1594 4.3269297e+08 0.070943769 0.031422148 104.49938 39.271228 6685.1200 4.2033214e+08 0.070902718 0.032831609 104.56093 39.148130 6687.0807 4.0996840e+08 0.069403210 0.034297912 104.62623 39.019409 6689.0413 3.9880556e+08 0.066945320 0.033978837 104.69804 38.880918 6691.0020 3.7976779e+08 0.066391073 0.033000801 104.76985 38.740295 6692.9626 3.6175705e+08 0.065901352 0.031647517 104.84166 38.596677 6694.9232 3.4666324e+08 0.065550023 0.029967047 104.91107 38.453072 6696.8839 3.3181002e+08 0.065329770 0.030043025 104.97774 38.309482 6698.8445 3.1744028e+08 0.064466949 0.031377042 105.04177 38.178737 6700.8052 3.0389913e+08 0.063117277 0.031264945 105.10332 38.060035 6702.7658 2.9691857e+08 0.062774683 0.033488248 105.16611 37.935314 6704.7265 2.8919138e+08 0.063178448 0.036534290 105.23278 37.791694 6706.6871 2.8072126e+08 0.063162302 0.039642281 105.30096 37.648074 6708.6478 2.6668698e+08 0.063076171 0.040748971 105.37277 37.504456 6710.6084 2.5226800e+08 0.062113113 0.040615583 105.44282 37.362593 6712.5691 2.4213159e+08 0.060599592 0.042886504 105.50951 37.224101 6714.5297 2.3114972e+08 0.059101802 0.047343231 105.57619 37.083597 6716.4903 2.2300249e+08 0.057760127 0.049123594 105.64287 36.939978 6718.4510 2.1476358e+08 0.056109662 0.050514798 105.70533 36.805453 6720.4116 2.1061171e+08 0.055999217 0.050372071 105.76248 36.682355 6722.3723 2.0280146e+08 0.056093292 0.050144967 105.82037 36.556663 6724.3329 2.0039694e+08 0.053734557 0.047146509 105.88192 36.418173 6726.2936 1.9400450e+08 0.051143630 0.040954015 105.94459 36.278566 6728.2542 1.8389853e+08 0.051151291 0.039988409 106.01126 36.134975 6730.2149 1.7616232e+08 0.050236406 0.040673505 106.07793 35.992755 6732.1755 1.6991687e+08 0.049086325 0.043772520 106.14461 35.854265 6734.1362 1.6864303e+08 0.048323405 0.049345408 106.20966 35.714137 6736.0968 1.6572674e+08 0.049980605 0.050720958 106.27121 35.570518 6738.0574 1.5879826e+08 0.051247023 0.057637345 106.32950 35.434486 6740.0181 1.5314739e+08 0.051051908 0.064081264 106.38226 35.311388 6741.9787 1.4862916e+08 0.048913756 0.068550099 106.43586 35.186825 6743.9394 1.4253827e+08 0.044325160 0.077384469 106.49741 35.048335 6745.9000 1.3792249e+08 0.042962322 0.078945249 106.55896 34.909099 6747.8607 1.3249456e+08 0.038421392 0.067064865 106.62051 34.765481 6749.8213 1.3424488e+08 0.035538021 0.072053056 106.68206 34.622867 6751.7820 1.3327031e+08 0.032207977 0.074042288 106.74361 34.484377 6753.7426 1.2826406e+08 0.030217678 0.075380498 106.80516 34.344630 6755.7033 1.2132155e+08 0.027385885 0.074297014 106.86670 34.201037 6757.6639 1.1318858e+08 0.025330125 0.074725307 106.92824 34.058957 6759.6245 1.1116598e+08 0.025106041 0.075970667 106.98979 33.920469 6761.5852 1.1070384e+08 0.026348837 0.078016573 107.04829 33.787317 6763.5458 1.1265082e+08 0.029238790 0.078100109 107.10105 33.664217 6765.5065 1.1152549e+08 0.030228322 0.079623652 107.15407 33.540007 6767.4671 1.0673098e+08 0.027807326 0.081452709 107.21049 33.401517 6769.4278 1.0083151e+08 0.022277128 0.085491788 107.26754 33.263027 6771.3884 95992549. 0.017550226 0.090247214 107.32909 33.124537 6773.3491 92009160. 0.012802914 0.095002641 107.38976 32.985161 6775.3097 88925855. 0.0080373765 0.099758068 107.44618 32.841542 6777.2703 84272905. 0.0028912252 0.10451349 107.50260 32.699069 6779.2310 79951044. -0.0026135471 0.10926892 107.55902 32.560579 6781.1916 76037177. -0.0087855178 0.11402435 107.61544 32.420693 6783.1523 74220061. -0.015919204 0.11877978 107.67185 32.277102 6785.1129 70065587. -0.028055358 0.12353520 107.72827 32.135163 6787.0736 65464856. -0.082338834 0.12829063 107.78469 31.996673 6789.0342 57374633. -0.048940748 0.13304606 107.84111 31.858183 6790.9949 50417695. 0.057381148 0.13780148 107.89753 31.719693