# # 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 = 47.828882 km # Date (UTC) = 2011-01-07T09:47:53.811 # Date (julian) = 2455568.90826171 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6508.8872 1.1919145e+11 0.093111325 0.034963132 102.90894 42.533559 6511.4091 9.7238092e+10 0.10465136 0.035723599 103.00469 42.403173 6513.9310 8.0068435e+10 0.11633205 0.036484066 103.10366 42.269560 6516.4529 6.7159797e+10 0.12828344 0.037244533 103.20099 42.137585 6518.9748 5.7189961e+10 0.14054888 0.038005000 103.29501 42.008938 6521.4966 4.9342500e+10 0.15315838 0.038765467 103.38902 41.878766 6524.0185 4.2916777e+10 0.16021567 0.039433543 103.48303 41.745175 6526.5404 3.7536722e+10 0.16553728 0.040234646 103.57704 41.613005 6529.0623 3.2960378e+10 0.16942439 0.042335015 103.67105 41.484359 6531.5842 2.9017749e+10 0.17304602 0.046078956 103.76373 41.354394 6534.1061 2.5575967e+10 0.17484299 0.047974226 103.85280 41.220801 6536.6279 2.2704606e+10 0.17530812 0.048352336 103.94051 41.091932 6539.1498 2.0445210e+10 0.17574631 0.049824986 104.02407 40.977583 6541.6717 1.8604946e+10 0.17518104 0.051108701 104.10764 40.863235 6544.1936 1.6990561e+10 0.17378425 0.051801390 104.19654 40.730186 6546.7155 1.5420005e+10 0.17226614 0.053053242 104.28561 40.596593 6549.2374 1.3893652e+10 0.16981314 0.054208160 104.37468 40.467686 6551.7592 1.2524805e+10 0.16697574 0.055502254 104.46376 40.339023 6554.2811 1.1301029e+10 0.16265574 0.054838279 104.55282 40.205775 6556.8030 1.0234091e+10 0.15853818 0.053895070 104.64188 40.072182 6559.3249 9.2511909e+09 0.15428923 0.052350512 104.73094 39.943085 6561.8468 8.3782763e+09 0.15082195 0.050955415 104.82001 39.814439 6564.3686 7.6620760e+09 0.14738869 0.048604528 104.89638 39.698485 6566.8905 7.0781486e+09 0.14482844 0.046679116 104.97114 39.584137 6569.4124 6.5854479e+09 0.14238329 0.044879266 105.05165 39.457971 6571.9343 6.1118247e+09 0.14037064 0.044248102 105.13576 39.324378 6574.4562 5.6280741e+09 0.13758501 0.042635907 105.21987 39.193718 6576.9781 5.1833608e+09 0.13488088 0.040245632 105.30399 39.065072 6579.4999 4.7792593e+09 0.13160774 0.036795660 105.38810 38.933598 6582.0218 4.4043658e+09 0.12889136 0.035287858 105.47222 38.800007 6584.5437 4.0605943e+09 0.12619803 0.034219337 105.55633 38.669139 6587.0656 3.7358928e+09 0.12366006 0.033172900 105.64045 38.540493 6589.5875 3.4582446e+09 0.12090463 0.031880500 105.71961 38.419413 6592.1093 3.2251774e+09 0.11744681 0.027967317 105.79439 38.305050 6594.6312 3.0243530e+09 0.11390801 0.025826009 105.87029 38.185757 6597.1531 2.8404161e+09 0.11006504 0.025674411 105.94946 38.052164 6599.6750 2.6497253e+09 0.10765867 0.024970328 106.02863 37.919735 6602.1969 2.4605973e+09 0.10618052 0.027348627 106.10779 37.791088 6604.7188 2.2820316e+09 0.10395719 0.026498051 106.18802 37.662442 6607.2406 2.1191713e+09 0.10146389 0.025231822 106.27213 37.533798 6609.7625 1.9710477e+09 0.097180531 0.023932436 106.35529 37.404198 6612.2844 1.8288074e+09 0.094194414 0.024108256 106.43445 37.270605 6614.8063 1.6983663e+09 0.093089017 0.023384993 106.51135 37.140323 6617.3282 1.5909337e+09 0.092060484 0.023548052 106.57732 37.025975 6619.8501 1.5007045e+09 0.091744108 0.024731017 106.64329 36.911626 6622.3719 1.4212685e+09 0.090620419 0.024658997 106.72113 36.784416 6624.8938 1.3368419e+09 0.089232368 0.025340764 106.80030 36.655751 6627.4157 1.2492506e+09 0.087447069 0.025477387 106.87947 36.522761 6629.9376 1.1692833e+09 0.086409310 0.025939588 106.95864 36.389168 6632.4595 1.0947066e+09 0.084778558 0.026087438 107.03357 36.259814 6634.9813 1.0274940e+09 0.083428316 0.026398427 107.10779 36.131170 6637.5032 9.6154734e+08 0.082040151 0.025914948 107.18201 36.002524 6640.0251 9.0009133e+08 0.081946748 0.025267580 107.25622 35.873878 6642.5470 8.4414701e+08 0.082018955 0.025174080 107.32372 35.756875 6645.0689 7.9811535e+08 0.080969019 0.025483948 107.38969 35.642526 6647.5908 7.5921571e+08 0.079633118 0.026748814 107.46012 35.517773 6650.1126 7.2061082e+08 0.078707222 0.026281022 107.53434 35.384180 6652.6345 6.8198364e+08 0.078088620 0.027425102 107.60856 35.253158 6655.1564 6.3916901e+08 0.076751264 0.027674841 107.68278 35.124514 6657.6783 6.0157511e+08 0.074700253 0.029687896 107.75700 34.995869 6660.2002 5.6770047e+08 0.072976239 0.031807937 107.83122 34.867223 6662.7220 5.3276691e+08 0.071327164 0.032639161 107.90308 34.738569 6665.2439 5.0495151e+08 0.070511101 0.028147446 107.97236 34.609905 6667.7658 4.7595760e+08 0.069915638 0.027384753 108.04390 34.481249 6670.2877 4.4902008e+08 0.069444791 0.027195349 108.11812 34.352603 6672.8096 4.2561435e+08 0.069376001 0.027348843 108.19018 34.221802 6675.3315 4.0086324e+08 0.067813262 0.030433218 108.25945 34.088209 6677.8533 3.7656532e+08 0.066378813 0.031145108 108.32872 33.956667 6680.3752 3.5262599e+08 0.066958031 0.029522442 108.39799 33.828023 6682.8971 3.3264428e+08 0.067985272 0.031109964 108.46726 33.699379 6685.4190 3.1543508e+08 0.067874187 0.033147389 108.53653 33.570735 6687.9409 2.9974515e+08 0.065587437 0.033818170 108.60580 33.442090 6690.4627 2.8750314e+08 0.063550791 0.033062832 108.67507 33.313443 6692.9846 2.7246153e+08 0.062660808 0.031621936 108.74434 33.184798 6695.5065 2.5825855e+08 0.062122843 0.029766433 108.81361 33.056153 6698.0284 2.4136716e+08 0.061398210 0.030256793 108.88288 32.927509 6700.5503 2.2586918e+08 0.059470956 0.031075874 108.95215 32.798863 6703.0722 2.1222160e+08 0.058831261 0.033855800 109.01989 32.670217 6705.5940 2.0514968e+08 0.058879866 0.037724692 109.08421 32.541573 6708.1159 1.9763701e+08 0.058454586 0.040169814 109.14996 32.412923 6710.6378 1.8858969e+08 0.056798976 0.040621337 109.21924 32.284257 6713.1597 1.8069806e+08 0.054404790 0.044264181 109.28720 32.155597 6715.6816 1.6923588e+08 0.052117896 0.048075678 109.35152 32.026953 6718.2035 1.6053877e+08 0.049611718 0.050129275 109.41585 31.898308 6720.7253 1.5086902e+08 0.048963899 0.050335724 109.48017 31.769663 6723.2472 1.4450471e+08 0.047815999 0.049506821 109.54449 31.641018 6725.7691 1.3714902e+08 0.043434214 0.041095601 109.60881 31.512373 6728.2910 1.3253217e+08 0.042620527 0.040040514 109.67314 31.383728 6730.8129 1.2814586e+08 0.040983624 0.041493436 109.73746 31.255083 6733.3347 1.2251077e+08 0.039657400 0.045741732 109.80178 31.126438 6735.8566 1.1744299e+08 0.040860813 0.050202805 109.86610 30.997792 6738.3785 1.0940681e+08 0.042338899 0.059404955 109.93042 30.869147 6740.9004 1.0205641e+08 0.041532641 0.065588525 109.99475 30.740502 6743.4223 94698918. 0.037162329 0.073896081 110.06037 30.610062 6745.9442 90124309. 0.034935769 0.078963801 110.13388 30.468691 6748.4660 87247828. 0.030955964 0.069468736 110.20213 30.332062 6750.9879 83440525. 0.028213922 0.073691042 110.26150 30.203418 6753.5098 81490417. 0.025315334 0.074627099 110.32262 30.074774 6756.0317 77657783. 0.022728125 0.074248435 110.38694 29.946128 6758.5536 75408058. 0.022504505 0.074875910 110.44963 29.817476 6761.0754 73006478. 0.023313026 0.077974458 110.50901 29.688812 6763.5973 68338934. 0.028980721 0.078256944 110.57277 29.554460 6766.1192 64944011. 0.031009689 0.079983406 110.64628 29.407434 6768.6411 60071590. 0.026477099 0.083162832 110.71214 29.270358 6771.1630 59861631. 0.021494409 0.089700428 110.77152 29.141713 6773.6849 58592269. 0.016466282 0.095817101 110.83089 29.015643 6776.2067 54217540. 0.010685307 0.10193377 110.89027 28.891946 6778.7286 50983370. 0.0032944361 0.10805045 110.95387 28.756602 6781.2505 45968270. -0.019134350 0.11416712 111.02173 28.609575 6783.7724 45344123. -0.0095232675 0.12028379 111.08339 28.475982 6786.2943 45645569. 0.017061067 0.12640047 111.14277 28.347337