# # 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 = 58.652227 km # Date (UTC) = 2013-01-07T09:50:43.501 # Date (julian) = 2456299.91022571 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6495.7720 8.0690703e+10 0.028786310 0.031008253 105.13917 38.997781 6497.9953 7.2329198e+10 0.036286025 0.031678705 105.21333 38.880001 6500.2187 6.4603661e+10 0.043927613 0.032349158 105.28749 38.762221 6502.4421 5.8083592e+10 0.051883797 0.033019611 105.36165 38.644441 6504.6655 5.2485983e+10 0.060271411 0.033690063 105.43581 38.526661 6506.8888 4.7569214e+10 0.069193859 0.034360516 105.50997 38.408881 6509.1122 4.3199771e+10 0.078720514 0.035030969 105.58412 38.291100 6511.3356 3.9182781e+10 0.088840071 0.035701421 105.65828 38.170481 6513.5589 3.5656609e+10 0.099694023 0.036371874 105.73244 38.048339 6515.7823 3.2446747e+10 0.11125221 0.037042327 105.80660 37.927755 6518.0057 2.9601914e+10 0.12358510 0.037712779 105.88077 37.809957 6520.2291 2.6991917e+10 0.13661463 0.038383232 105.95464 37.692161 6522.4524 2.4593834e+10 0.14901159 0.039035729 106.02444 37.574381 6524.6758 2.2395589e+10 0.15736457 0.039667048 106.09424 37.456601 6526.8992 2.0443856e+10 0.16461417 0.040610786 106.16741 37.338820 6529.1226 1.8690721e+10 0.17025733 0.042431025 106.24157 37.221040 6531.3459 1.7152999e+10 0.17560789 0.045732203 106.31362 37.103260 6533.5693 1.5793489e+10 0.17955356 0.047761530 106.38342 36.985480 6535.7927 1.4527141e+10 0.17987369 0.047880431 106.45322 36.867700 6538.0161 1.3327834e+10 0.18044310 0.049164504 106.52301 36.749920 6540.2394 1.2231599e+10 0.17937253 0.050967220 106.59280 36.632140 6542.4628 1.1288526e+10 0.17655059 0.051177948 106.65564 36.526099 6544.6862 1.0547517e+10 0.17444502 0.052200997 106.71769 36.421407 6546.9096 9.9147175e+09 0.17218401 0.053212950 106.78219 36.312555 6549.1329 9.3023036e+09 0.16967039 0.054101754 106.85198 36.194776 6551.3563 8.7044781e+09 0.16789552 0.055360822 106.92167 36.076997 6553.5797 8.1214395e+09 0.16588250 0.055043666 106.98711 35.959199 6555.8031 7.5797872e+09 0.16349957 0.054178601 107.05256 35.841401 6558.0264 7.0770837e+09 0.16147167 0.053216778 107.12119 35.726816 6560.2498 6.6095951e+09 0.15875419 0.052049074 107.19099 35.613397 6562.4732 6.1793208e+09 0.15585515 0.050429651 107.25886 35.498055 6564.6966 5.7843685e+09 0.15307794 0.048455917 107.32429 35.380274 6566.9199 5.4154134e+09 0.15069646 0.046662481 107.38972 35.262494 6569.1433 5.0788347e+09 0.14832657 0.044861752 107.45516 35.144714 6571.3667 4.7687791e+09 0.14647172 0.044403127 107.52059 35.026934 6573.5901 4.4963546e+09 0.14386692 0.043183976 107.58602 34.909155 6575.8134 4.2415734e+09 0.14101749 0.041558582 107.65146 34.791377 6578.0368 4.0069775e+09 0.13794427 0.038591496 107.71689 34.673597 6580.2602 3.7766250e+09 0.13465659 0.036280310 107.78233 34.555817 6582.4836 3.5633752e+09 0.13149729 0.035162206 107.84579 34.441589 6584.7069 3.3921521e+09 0.12833095 0.034130421 107.90395 34.336897 6586.9303 3.2495487e+09 0.12544613 0.033159270 107.96211 34.232205 6589.1537 3.1242436e+09 0.12294136 0.032741097 108.02531 34.118451 6591.3771 2.9861344e+09 0.12045232 0.028776452 108.09074 34.000671 6593.6004 2.8371147e+09 0.11836733 0.026544007 108.15443 33.884629 6595.8238 2.6879579e+09 0.11579172 0.025709001 108.21551 33.771194 6598.0472 2.5458744e+09 0.11398512 0.025384643 108.27659 33.657290 6600.2705 2.4197453e+09 0.11339118 0.025546073 108.33766 33.539511 6602.4939 2.3004098e+09 0.11272849 0.027095139 108.39874 33.421732 6604.7173 2.1881204e+09 0.11171591 0.026497184 108.46336 33.303952 6606.9407 2.0824251e+09 0.11068671 0.025813606 108.52879 33.186172 6609.1640 1.9806626e+09 0.10759062 0.023754661 108.59194 33.068392 6611.3874 1.8860395e+09 0.10477468 0.024711396 108.65301 32.950612 6613.6108 1.7948803e+09 0.10372131 0.023797692 108.71408 32.832832 6615.8342 1.7049171e+09 0.10214704 0.023277197 108.77516 32.715052 6618.0575 1.6199394e+09 0.10139198 0.023814248 108.83623 32.597272 6620.2809 1.5411674e+09 0.10053672 0.024857723 108.89730 32.483585 6622.5043 1.4658568e+09 0.099035062 0.024623767 108.95837 32.370168 6624.7277 1.3987147e+09 0.097246316 0.025251826 109.01256 32.262386 6626.9510 1.3419855e+09 0.094967305 0.025379188 109.06296 32.157695 6629.1744 1.2929039e+09 0.093502441 0.026077570 109.11408 32.052128 6631.3978 1.2514115e+09 0.091335203 0.025971173 109.17515 31.934348 6633.6212 1.2072369e+09 0.089538309 0.026260702 109.23622 31.816568 6635.8445 1.1590963e+09 0.087813926 0.026526439 109.29730 31.702153 6638.0679 1.1087315e+09 0.086807597 0.025668683 109.35838 31.588719 6640.2913 1.0562874e+09 0.087045332 0.025235013 109.41735 31.473187 6642.5147 1.0101950e+09 0.087224608 0.025172757 109.47406 31.355407 6644.7380 9.6915756e+08 0.086444907 0.025423372 109.53077 31.238455 6646.9614 9.2913541e+08 0.085477818 0.026417805 109.58748 31.125037 6649.1848 8.9031716e+08 0.084503749 0.027378970 109.64419 31.011620 6651.4082 8.5190428e+08 0.084297965 0.026796961 109.70090 30.894286 6653.6315 8.1705521e+08 0.083871087 0.027848100 109.75761 30.776506 6655.8549 7.8452087e+08 0.082274415 0.027963466 109.81695 30.658726 6658.0783 7.5282436e+08 0.080843774 0.030199915 109.87803 30.540946 6660.3017 7.2403376e+08 0.079392296 0.031900189 109.93773 30.424531 6662.5250 6.9549992e+08 0.078015423 0.032749698 109.99444 30.311113 6664.7484 6.7185576e+08 0.077123210 0.029467703 110.05107 30.197607 6666.9718 6.4474768e+08 0.076805267 0.027097959 110.10341 30.079827 6669.1952 6.1571345e+08 0.075640389 0.028155265 110.15576 29.962047 6671.4185 5.9116380e+08 0.075635157 0.026871313 110.21128 29.847442 6673.6419 5.6674650e+08 0.074943483 0.028419231 110.26799 29.734025 6675.8653 5.4683807e+08 0.072665703 0.031455682 110.32470 29.618699 6678.0887 5.2540503e+08 0.071447646 0.030877319 110.38142 29.500902 6680.3120 4.9863903e+08 0.071713855 0.029508796 110.43751 29.383732 6682.5354 4.7777765e+08 0.072327387 0.030833610 110.48986 29.270315 6684.7588 4.5508334e+08 0.072326761 0.032692596 110.54220 29.156897 6686.9821 4.3638283e+08 0.070808999 0.034332514 110.59826 29.043479 6689.2055 4.2000280e+08 0.068188329 0.033831020 110.65497 28.930060 6691.4289 4.0140144e+08 0.067431559 0.032900071 110.70924 28.814206 6693.6523 3.8685982e+08 0.066621653 0.031380319 110.76159 28.696427 6695.8756 3.7041359e+08 0.066525964 0.029698628 110.81510 28.579809 6698.0990 3.5593110e+08 0.065831722 0.030353736 110.87181 28.466391 6700.3224 3.4096451e+08 0.064261819 0.030906848 110.92851 28.352973 6702.5458 3.2781880e+08 0.063288661 0.033312530 110.98098 28.235308 6704.7691 3.1537378e+08 0.063692710 0.036555244 111.03332 28.117528 6706.9925 3.0408237e+08 0.063471317 0.040173806 111.08567 28.002720 6709.2159 2.9597737e+08 0.062874278 0.040995224 111.13801 27.889301 6711.4393 2.8412823e+08 0.061090441 0.041191999 111.19036 27.775883 6713.6626 2.7598018e+08 0.058990662 0.046083258 111.24271 27.662465 6715.8860 2.6767153e+08 0.057220806 0.048284781 111.29578 27.547002 6718.1094 2.5702852e+08 0.055160409 0.049982782 111.35561 27.412394 6720.3328 2.4594762e+08 0.054421863 0.050381210 111.41475 27.279709 6722.5561 2.3434599e+08 0.054122511 0.049917671 111.46710 27.166291 6724.7795 2.2514907e+08 0.050433662 0.043417218 111.51944 27.052874 6727.0029 2.1500966e+08 0.048343151 0.040956538 111.57180 26.939443 6729.2263 2.0827786e+08 0.047968495 0.040894617 111.62415 26.826008 6731.4496 2.0500299e+08 0.046121975 0.042644886 111.67429 26.712581 6733.6730 2.0403361e+08 0.044947039 0.047578284 111.72228 26.599163 6735.8964 2.0397173e+08 0.046308720 0.050245012 111.77120 26.485745 6738.1198 1.9852535e+08 0.047727449 0.057980427 111.82354 26.372327 6740.3431 1.9103539e+08 0.047426903 0.064636549 111.87589 26.258910 6742.5665 1.8122101e+08 0.044658152 0.069991158 111.93053 26.125966 6744.7899 1.6995501e+08 0.040927139 0.078404367 111.98537 25.991357 6747.0133 1.6246078e+08 0.036277869 0.067356597 112.03793 25.876151 6749.2366 1.5563813e+08 0.035961396 0.072213143 112.09028 25.762734 6751.4600 1.5365174e+08 0.032616209 0.073906164 112.13991 25.649316 6753.6834 1.5105944e+08 0.030550425 0.075188835 112.18789 25.535898 6755.9068 1.4468554e+08 0.028169445 0.074207791 112.23814 25.417120 6758.1301 1.3755888e+08 0.027529731 0.073980500 112.29298 25.287497 6760.3535 1.3065904e+08 0.028108247 0.076735388 112.34701 25.163141 6762.5769 1.2679182e+08 0.032574451 0.077120293 112.39936 25.049723 6764.8003 1.2418017e+08 0.035268187 0.079521623 112.45178 24.935777 6767.0236 1.2163164e+08 0.035237533 0.081949309 112.50662 24.806154 6769.2470 1.1562594e+08 0.030215779 0.085053349 112.56128 24.676965 6771.4704 1.1251816e+08 0.026087909 0.090446009 112.60927 24.563547 6773.6938 1.0703742e+08 0.021965796 0.095838670 112.65725 24.450130 6775.9171 1.0156378e+08 0.017829756 0.10123133 112.71027 24.324812 6778.1405 98185585. 0.013683347 0.10662399 112.76511 24.195189 6780.3639 94784771. 0.0095348840 0.11201665 112.81496 24.077371 6782.5872 94600062. 0.0054220870 0.11740931 112.86294 23.963953 6784.8106 91561677. 0.0013058208 0.12280197 112.91392 23.843467 6787.0340 87504542. -0.0028134621 0.12819463 112.96876 23.713844 6789.2574 81450155. -0.0069751845 0.13358729 113.01877 23.591195 6791.4807 77840337. -0.011115536 0.13897995 113.06239 23.477777 6793.7041 76756405. -0.015206425 0.14437261 113.10756 23.362125 6795.9275 77139455. -0.019261870 0.14976527 113.16240 23.232503 6798.1509 75890453. -0.023380079 0.15515793 113.21634 23.105597 6800.3742 68018024. -0.027808000 0.16055059 113.26432 22.996542 6802.5976 63720012. -0.032227173 0.16594325 113.31231 22.887486 6804.8210 59481771. -0.036838605 0.17133592 113.36186 22.761160 6807.0444 56838884. -0.041654901 0.17672858 113.41172 22.631536 6809.2677 57203693. -0.046714602 0.18212124 113.46573 22.501913 6811.4911 54742739. -0.053905743 0.18751390 113.52057 22.372290 6813.7145 53560137. -0.076239356 0.19290656 113.57128 22.242667 6815.9379 51391882. -0.064816731 0.19829922 113.62113 22.113044 6818.1612 47536909. -0.033069584 0.20369188 113.66945 21.996746