# # 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 = 55.409343 km # Date (UTC) = 2012-01-03T10:03:54.144 # Date (julian) = 2455929.91937667 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6497.7338 1.8901655e+11 0.039920918 0.031599830 100.78845 38.952322 6500.3074 1.5929193e+11 0.049497463 0.032375908 100.86925 38.831123 6502.8811 1.3572636e+11 0.059156323 0.033151985 100.95130 38.706167 6505.4547 1.1551782e+11 0.068961546 0.033928063 101.03714 38.569831 6508.0284 9.8140271e+10 0.078976408 0.034704141 101.12163 38.438754 6510.6020 8.3900087e+10 0.089349656 0.035480219 101.20242 38.322056 6513.1757 7.3183056e+10 0.10036462 0.036256297 101.28341 38.204578 6515.7493 6.4360171e+10 0.11206464 0.037032374 101.36925 38.068242 6518.3230 5.6409733e+10 0.12435977 0.037808452 101.45509 37.931907 6520.8966 4.9083692e+10 0.13720812 0.038584530 101.54094 37.795571 6523.4703 4.2859557e+10 0.14656304 0.039295668 101.62603 37.660785 6526.0439 3.8016245e+10 0.15235531 0.039714136 101.70234 37.544074 6528.6176 3.4090066e+10 0.15898874 0.041932406 101.77865 37.427362 6531.1912 3.0639687e+10 0.16397399 0.045507011 101.85877 37.293946 6533.7649 2.7453466e+10 0.16862475 0.047844637 101.93956 37.157610 6536.3385 2.4599947e+10 0.17065715 0.048093392 102.01644 37.034468 6538.9122 2.2255535e+10 0.17298820 0.049600865 102.09275 36.913283 6541.4858 2.0205491e+10 0.17326275 0.051168978 102.17194 36.785605 6544.0595 1.8291035e+10 0.17167527 0.051692602 102.25273 36.654320 6546.6331 1.6585859e+10 0.16969406 0.052985494 102.33054 36.529725 6549.2068 1.5137749e+10 0.16702317 0.054177012 102.40684 36.408540 6551.7804 1.3859368e+10 0.16507100 0.055509697 102.48509 36.280774 6554.3541 1.2621138e+10 0.16240004 0.054839811 102.56589 36.144438 6556.9277 1.1475374e+10 0.16004663 0.053876730 102.64057 36.017012 6559.5014 1.0511079e+10 0.15706164 0.052330588 102.70791 35.900300 6562.0750 9.7053786e+09 0.15407566 0.050808496 102.77829 35.779148 6564.6487 8.9527808e+09 0.15112838 0.048477609 102.85907 35.642812 6567.2223 8.2304079e+09 0.14894456 0.046429188 102.93766 35.511305 6569.7960 7.6162600e+09 0.14712305 0.044904232 103.00947 35.394608 6572.3696 7.0992926e+09 0.14514129 0.044018467 103.08136 35.277559 6574.9433 6.6330353e+09 0.14273876 0.042401940 103.15710 35.141223 6577.5170 6.1684352e+09 0.13989166 0.039408365 103.23284 35.005077 6580.0906 5.6810366e+09 0.13707624 0.036437022 103.30858 34.873792 6582.6643 5.2491481e+09 0.13442049 0.035113032 103.38410 34.743083 6585.2379 4.8838382e+09 0.13177487 0.033780572 103.45591 34.621898 6587.8116 4.5725022e+09 0.12918492 0.033338180 103.52773 34.500713 6590.3852 4.2893562e+09 0.12598244 0.030345517 103.60281 34.371138 6592.9589 4.0083148e+09 0.12259797 0.027142179 103.67856 34.239833 6595.5325 3.7539973e+09 0.11869888 0.025678794 103.74716 34.117120 6598.1062 3.5334413e+09 0.11512158 0.025356479 103.81448 33.995935 6600.6798 3.3205282e+09 0.11350089 0.026387450 103.88390 33.868477 6603.2535 3.1066795e+09 0.11186633 0.026513222 103.95459 33.737189 6605.8271 2.9046080e+09 0.11112140 0.027358930 104.02313 33.612373 6608.4008 2.7368102e+09 0.10877633 0.023721775 104.09045 33.491188 6610.9744 2.5902192e+09 0.10548292 0.024934016 104.15916 33.365836 6613.5481 2.4415390e+09 0.10461516 0.023774680 104.22985 33.234551 6616.1217 2.2964646e+09 0.10322495 0.023301404 104.29909 33.107624 6618.6954 2.1688037e+09 0.10271487 0.024295887 104.36643 32.986422 6621.2690 2.0515540e+09 0.10195577 0.025000276 104.43445 32.863160 6623.8427 1.9386362e+09 0.10010470 0.024804025 104.50514 32.731874 6626.4163 1.8195135e+09 0.098689611 0.026060460 104.57583 32.600589 6628.9900 1.6987247e+09 0.097222503 0.026105037 104.64653 32.469302 6631.5636 1.5947720e+09 0.095429470 0.025988020 104.71530 32.340476 6634.1373 1.5068641e+09 0.093756526 0.026336857 104.77814 32.219291 6636.7109 1.4309809e+09 0.092035937 0.026273667 104.84110 32.097948 6639.2846 1.3571342e+09 0.090936503 0.025526357 104.91180 31.966663 6641.8582 1.2852495e+09 0.091314840 0.025151215 104.98222 31.835891 6644.4319 1.2179040e+09 0.090037510 0.025390284 105.04505 31.719194 6647.0055 1.1609747e+09 0.088506520 0.026440698 105.10789 31.602498 6649.5792 1.1067441e+09 0.087098726 0.026835298 105.17707 31.469932 6652.1528 1.0509435e+09 0.086265078 0.027292575 105.24778 31.333576 6654.7265 9.9275170e+08 0.084910733 0.027726731 105.31429 31.201413 6657.3001 9.3462047e+08 0.082562255 0.029249273 105.37994 31.070128 6659.8738 8.8253775e+08 0.080862183 0.031652323 105.44320 30.951195 6662.4475 8.4103457e+08 0.079276238 0.032793225 105.50604 30.834499 6665.0211 8.0545166e+08 0.078652737 0.028512554 105.57061 30.708776 6667.5948 7.6979653e+08 0.078260263 0.027321921 105.63626 30.577490 6670.1684 7.2969617e+08 0.077780801 0.027250613 105.70190 30.446204 6672.7421 6.9250563e+08 0.077624448 0.027309709 105.76754 30.314918 6675.3157 6.5611631e+08 0.075949518 0.030403053 105.83318 30.180310 6677.8894 6.2157034e+08 0.074364644 0.031093901 105.89883 30.043975 6680.4630 5.8888401e+08 0.074851321 0.029541400 105.95953 29.920944 6683.0367 5.6125489e+08 0.075738731 0.031242310 106.01788 29.804247 6685.6103 5.3899855e+08 0.075365061 0.033349479 106.07951 29.680984 6688.1840 5.1669130e+08 0.072674020 0.033827656 106.14516 29.549678 6690.7576 4.9259199e+08 0.070779760 0.033029040 106.21081 29.418381 6693.3313 4.6816367e+08 0.069750698 0.031490443 106.27645 29.287095 6695.9049 4.4550154e+08 0.069306212 0.029693251 106.34209 29.155809 6698.4786 4.2115807e+08 0.068225552 0.030874711 106.40774 29.024523 6701.0522 4.0106214e+08 0.066091468 0.031486071 106.46739 28.900657 6703.6259 3.8210196e+08 0.065861835 0.035241371 106.52125 28.783961 6706.1995 3.6634976e+08 0.065780175 0.038793662 106.57841 28.663172 6708.7732 3.5301401e+08 0.065072995 0.040885541 106.64406 28.531886 6711.3468 3.3911172e+08 0.062926263 0.041086828 106.70819 28.400599 6713.9205 3.2562421e+08 0.060258833 0.047015801 106.76878 28.269314 6716.4941 3.1106835e+08 0.058102651 0.049129170 106.83098 28.138028 6719.0678 2.9686212e+08 0.055423388 0.051305440 106.89663 28.006742 6721.6414 2.8286858e+08 0.055899860 0.050497166 106.96056 27.875449 6724.2151 2.6962048e+08 0.053368453 0.048130559 107.02116 27.744144 6726.7887 2.5746251e+08 0.049728059 0.040958481 107.08176 27.612845 6729.3624 2.4757551e+08 0.049008689 0.040803886 107.14236 27.481560 6731.9360 2.3650739e+08 0.046874705 0.043612917 107.20295 27.350273 6734.5097 2.2779316e+08 0.046167976 0.049322933 107.26355 27.218987 6737.0833 2.1893419e+08 0.048043110 0.054401055 107.32414 27.087700 6739.6570 2.0937416e+08 0.048335641 0.063630588 107.38473 26.956415 6742.2306 2.0088318e+08 0.045544211 0.069172762 107.44532 26.825129 6744.8043 1.9076849e+08 0.040752001 0.078415515 107.50592 26.693844 6747.3779 1.8462331e+08 0.035849825 0.067231048 107.56651 26.564768 6749.9516 1.7548111e+08 0.033252933 0.072017384 107.62711 26.438532 6752.5253 1.6659290e+08 0.029991702 0.073526662 107.68770 26.309988 6755.0989 1.5840215e+08 0.027742575 0.074561983 107.74829 26.178702 6757.6726 1.5203547e+08 0.025384193 0.074699033 107.80648 26.047415 6760.2462 1.4821316e+08 0.025887772 0.076530774 107.86202 25.916129 6762.8199 1.4495870e+08 0.030459110 0.076728348 107.92007 25.784843 6765.3935 1.3781005e+08 0.032913080 0.079603029 107.98067 25.653557 6767.9672 1.3081674e+08 0.030193927 0.080892797 108.04275 25.515571 6770.5408 1.2329100e+08 0.024403036 0.088191407 108.10623 25.371298 6773.1145 1.1331188e+08 0.019243234 0.094433643 108.16746 25.237179 6775.6881 1.0890339e+08 0.014275795 0.10067588 108.22806 25.105874 6778.2618 1.0404429e+08 0.0093199352 0.10691812 108.28460 24.974584 6780.8354 99647714. 0.0043953015 0.11316035 108.34014 24.843298 6783.4091 94356695. -0.00058827513 0.11940259 108.39569 24.716165 6785.9827 88199956. -0.0056637954 0.12564482 108.45123 24.589928 6788.5564 84756782. -0.010581459 0.13188706 108.51832 24.443642 6791.1300 81075706. -0.015544314 0.13812930 108.58607 24.295648 6793.7037 79747820. -0.020331492 0.14437153 108.64162 24.164363 6796.2773 77478535. -0.025253597 0.15061377 108.69716 24.033728 6798.8510 74951514. -0.030290659 0.15685601 108.75271 23.907491 6801.4246 72709735. -0.035437204 0.16309824 108.80943 23.777720 6803.9983 68483687. -0.041105746 0.16934048 108.87291 23.627676 6806.5719 65926185. -0.046971904 0.17558271 108.93309 23.487528 6809.1456 63807380. -0.053491786 0.18182495 108.98863 23.361292 6811.7192 61783456. -0.061419824 0.18806719 109.04512 23.224693 6814.2929 58547652. -0.074002607 0.19430942 109.10283 23.074649 6816.8665 56606366. -0.12390010 0.20055166 109.15902 22.941328 6819.4402 54174916. -0.091293272 0.20679390 109.21456 22.815092 6822.0138 51778929. -0.0090624032 0.21303613 109.27583 22.671666