# # 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 = 56.962551 km # Date (UTC) = 2015-01-04T10:44:24.581 # Date (julian) = 2457026.94750672 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6495.2919 6.4463680e+10 0.029282409 0.030863492 94.574181 33.584476 6497.6051 5.7692290e+10 0.036712870 0.031561022 94.642262 33.459780 6499.9182 5.1740054e+10 0.044167606 0.032258552 94.710349 33.332687 6502.2314 4.6683203e+10 0.051784909 0.032956082 94.776385 33.210513 6504.5446 4.2479582e+10 0.059746594 0.033653612 94.836896 33.101593 6506.8577 3.9149925e+10 0.068283446 0.034351143 94.897408 32.992673 6509.1709 3.6108443e+10 0.077374248 0.035048673 94.963907 32.872971 6511.4841 3.3121402e+10 0.087021298 0.035746203 95.031980 32.750434 6513.7972 3.0306347e+10 0.097340046 0.036443733 95.093230 32.633535 6516.1104 2.7936860e+10 0.10855888 0.037141263 95.149706 32.520580 6518.4236 2.5939427e+10 0.12075208 0.037838793 95.207454 32.406576 6520.7368 2.3962270e+10 0.13361461 0.038536323 95.275530 32.284041 6523.0499 2.2023544e+10 0.14421811 0.039191487 95.343607 32.161506 6525.3631 2.0262571e+10 0.15181951 0.039740775 95.401179 32.051294 6527.6763 1.8784149e+10 0.15882477 0.041207448 95.457663 31.942359 6529.9894 1.7441134e+10 0.16555274 0.043811867 95.517163 31.827609 6532.3026 1.6070744e+10 0.17065272 0.046936985 95.580701 31.705073 6534.6158 1.4735855e+10 0.17398695 0.048116813 95.643560 31.584684 6536.9289 1.3555369e+10 0.17561875 0.048621651 95.704071 31.471730 6539.2421 1.2587118e+10 0.17574596 0.049936700 95.764583 31.358776 6541.5553 1.1699784e+10 0.17424204 0.051146455 95.827349 31.238681 6543.8685 1.0826971e+10 0.17171578 0.051609822 95.890887 31.116143 6546.1816 9.9577774e+09 0.16931883 0.052613971 95.951966 30.993607 6548.4948 9.1478974e+09 0.16760193 0.053815407 96.010968 30.871071 6550.8080 8.4352363e+09 0.16571818 0.055187666 96.069115 30.753143 6553.1211 7.8420584e+09 0.16421364 0.055274177 96.125591 30.644223 6555.4343 7.3431974e+09 0.16208606 0.054488449 96.182068 30.535303 6557.7475 6.8677814e+09 0.16002189 0.053397591 96.244613 30.414679 6560.0606 6.3982686e+09 0.15768465 0.052219636 96.308150 30.292142 6562.3738 5.9656861e+09 0.15493523 0.050524211 96.364413 30.178530 6564.6870 5.6005223e+09 0.15243214 0.048460259 96.416861 30.069595 6567.0001 5.2903506e+09 0.15039029 0.046617063 96.471279 29.958246 6569.3133 4.9612844e+09 0.14847799 0.044872816 96.534816 29.835709 6571.6265 4.6389433e+09 0.14703470 0.044332170 96.598353 29.713172 6573.9397 4.3500925e+09 0.14466346 0.042903431 96.651085 29.603900 6576.2528 4.1096395e+09 0.14231720 0.041080387 96.703530 29.494981 6578.5660 3.9012840e+09 0.13939501 0.037755843 96.759220 29.379318 6580.8792 3.6660657e+09 0.13656115 0.035708279 96.818218 29.256781 6583.1923 3.4447650e+09 0.13421750 0.034924316 96.875303 29.138218 6585.5055 3.2504095e+09 0.13136741 0.033566635 96.927745 29.029298 6587.8187 3.0883727e+09 0.12887916 0.033339756 96.980186 28.920378 6590.1318 2.9370265e+09 0.12621277 0.030816821 97.037968 28.800374 6592.4450 2.7672597e+09 0.12365789 0.027641284 97.096978 28.677819 6594.7582 2.6144102e+09 0.12149155 0.025756318 97.151982 28.563579 6597.0714 2.4844771e+09 0.11911300 0.025700212 97.204424 28.454660 6599.3845 2.3774946e+09 0.11772441 0.024952857 97.257724 28.343958 6601.6977 2.2710099e+09 0.11771863 0.027374262 97.316722 28.221421 6604.0109 2.1504207e+09 0.11645803 0.026077724 97.375720 28.098884 6606.3240 2.0309720e+09 0.11626635 0.026921694 97.434721 27.976347 6608.6372 1.9146957e+09 0.11374746 0.023715524 97.493722 27.853810 6610.9504 1.8143938e+09 0.11070833 0.024911034 97.545053 27.744054 6613.2635 1.7315356e+09 0.10969618 0.023670283 97.593459 27.639168 6615.5767 1.6546970e+09 0.10823320 0.023269275 97.644464 27.529955 6617.8899 1.5743753e+09 0.10739941 0.023734285 97.703465 27.407419 6620.2030 1.4890323e+09 0.10672769 0.024832629 97.762024 27.285451 6622.5162 1.4102633e+09 0.10531519 0.024620593 97.810438 27.176516 6624.8294 1.3504533e+09 0.10355767 0.025306275 97.858851 27.067582 6627.1426 1.2967064e+09 0.10124753 0.025371877 97.913227 26.950986 6629.4557 1.2411709e+09 0.099842767 0.026026709 97.972229 26.828450 6631.7689 1.1781705e+09 0.097840263 0.026008870 98.029596 26.705913 6634.0821 1.1115331e+09 0.096101281 0.026332829 98.084054 26.583376 6636.3952 1.0570449e+09 0.094262523 0.026396268 98.137567 26.463599 6638.7084 1.0056015e+09 0.092842886 0.025640779 98.185977 26.358713 6641.0216 9.6640210e+08 0.093130538 0.025148374 98.234387 26.253827 6643.3347 9.2940066e+08 0.092510965 0.025243160 98.286897 26.136983 6645.6479 8.9187089e+08 0.091536689 0.025755206 98.341359 26.014447 6647.9611 8.5105355e+08 0.090660589 0.026943793 98.395819 25.894063 6650.2742 8.0421116e+08 0.090098395 0.026318020 98.450278 25.776064 6652.5874 7.6103691e+08 0.089792363 0.027412144 98.503101 25.660519 6654.9006 7.2519130e+08 0.088804675 0.027652566 98.551517 25.551585 6657.2138 6.9913152e+08 0.086821884 0.029149064 98.599933 25.442651 6659.5269 6.7219424e+08 0.085268831 0.031724681 98.653138 25.322942 6661.8401 6.4285067e+08 0.083775374 0.032962829 98.707600 25.200405 6664.1533 6.1278703e+08 0.082426859 0.031645292 98.762060 25.080540 6666.4664 5.8332040e+08 0.082399341 0.026999486 98.816519 24.962541 6668.7796 5.5561217e+08 0.081184716 0.028160670 98.869230 24.842794 6671.0928 5.2525824e+08 0.081148803 0.026866670 98.919153 24.720258 6673.4059 4.9779422e+08 0.080556439 0.028066337 98.968801 24.600931 6675.7191 4.7679064e+08 0.078300696 0.031175725 99.017210 24.496046 6678.0323 4.5900975e+08 0.076837973 0.030915021 99.065620 24.391160 6680.3455 4.4401336e+08 0.076909175 0.029516014 99.115093 24.273867 6682.6586 4.2912105e+08 0.077391068 0.030927756 99.165016 24.151330 6684.9718 4.1126189e+08 0.077127889 0.032703406 99.217204 24.031060 6687.2850 3.9137284e+08 0.075027658 0.034183974 99.271663 23.913061 6689.5981 3.7041846e+08 0.072370293 0.033477610 99.324781 23.793713 6691.9113 3.5463164e+08 0.071175273 0.032786256 99.374711 23.671158 6694.2245 3.4319541e+08 0.070180775 0.030946420 99.424640 23.549027 6696.5376 3.3171797e+08 0.069941521 0.029899164 99.474563 23.431029 6698.8508 3.1744135e+08 0.068784233 0.031385651 99.524486 23.313030 6701.1640 3.0161340e+08 0.066978025 0.031650050 99.574408 23.195033 6703.4771 2.8833510e+08 0.066898025 0.034869212 99.624331 23.077035 6705.7903 2.7494064e+08 0.067015511 0.038073632 99.677368 22.955923 6708.1035 2.6586250e+08 0.066643851 0.040156272 99.731830 22.833387 6710.4167 2.5590844e+08 0.065225370 0.040578050 99.784101 22.713040 6712.7298 2.4950607e+08 0.062997128 0.043185002 99.834024 22.595041 6715.0430 2.4188088e+08 0.060852212 0.047422563 99.883946 22.477042 6717.3562 2.2913765e+08 0.058708935 0.049852238 99.933869 22.359044 6719.6693 2.1971886e+08 0.056963138 0.050733922 99.983370 22.242041 6721.9825 2.1110858e+08 0.057110038 0.050599932 100.02774 22.137155 6724.2957 2.0485478e+08 0.054259945 0.047457594 100.07211 22.032270 6726.6088 2.0078909e+08 0.050838253 0.040956859 100.12096 21.906394 6728.9220 1.9007327e+08 0.050374503 0.040934894 100.17283 21.766349 6731.2352 1.8151062e+08 0.048445727 0.042218081 100.22340 21.641054 6733.5484 1.7553367e+08 0.047125226 0.046901470 100.27333 21.523055 6735.8615 1.6861235e+08 0.048311476 0.050208001 100.32325 21.405048 6738.1747 1.6089706e+08 0.049637205 0.058282845 100.37318 21.287033 6740.4879 1.5168582e+08 0.049098584 0.064883788 100.42192 21.169023 6742.8010 1.4563852e+08 0.045813551 0.070562612 100.46730 21.051024 6745.1142 1.3832180e+08 0.042317487 0.078614895 100.51295 20.933026 6747.4274 1.3547728e+08 0.037908325 0.067214034 100.56288 20.815028 6749.7405 1.3087698e+08 0.036205952 0.072075173 100.61280 20.697030 6752.0537 1.2740245e+08 0.032913723 0.074072326 100.66272 20.579031 6754.3669 1.2528326e+08 0.031671485 0.075623486 100.71264 20.461033 6756.6800 1.2035008e+08 0.028962999 0.075916770 100.75961 20.343034 6758.9932 1.1701018e+08 0.029668647 0.075805610 100.80499 20.225035 6761.3064 1.1397152e+08 0.031127009 0.077993538 100.85328 20.099469 6763.6196 1.0858358e+08 0.036138129 0.078324634 100.90515 19.964611 6765.9327 1.0355513e+08 0.038351717 0.079701466 100.95600 19.838535 6768.2459 99121723. 0.035108047 0.081740812 101.00593 19.720537 6770.5591 96006483. 0.030478627 0.088235677 101.05441 19.602539 6772.8722 93143019. 0.026382008 0.093846130 101.09979 19.484540 6775.1854 91693644. 0.022248652 0.099456583 101.14591 19.364620 6777.4986 85284046. 0.018257066 0.10506704 101.19778 19.229762 6779.8117 80525559. 0.014237825 0.11067749 101.24844 19.098043 6782.1249 78511752. 0.010147466 0.11628794 101.29383 18.980044 6784.4381 76902029. 0.0060460071 0.12189840 101.33921 18.862045 6786.7513 78546553. 0.0018559922 0.12750885 101.38905 18.744046 6789.0644 74169658. -0.0021578065 0.13311930 101.43898 18.626048 6791.3776 69523145. -0.0061435169 0.13872975 101.49042 18.494912 6793.6908 66860903. -0.010167545 0.14434021 101.54229 18.360054 6796.0039 67749410. -0.014292864 0.14995066 101.58864 18.243397 6798.3171 64748334. -0.018237585 0.15556111 101.63403 18.129921 6800.6303 61261206. -0.022113562 0.16117157 101.68362 18.002584 6802.9434 55851656. -0.025812107 0.16678202 101.73549 17.867726 6805.2566 51993667. -0.029363408 0.17239247 101.78735 17.732884 6807.5698 50800632. -0.033275489 0.17800293 101.83921 17.598048 6809.8829 46383143. -0.034928486 0.18361338 101.88235 17.476534 6812.1961 44681034. -0.041321422 0.18922383 101.92321 17.358518 6814.5093 44643172. -0.050194650 0.19483428 101.97055 17.233638