# # 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 = 43.854733 km # Date (UTC) = 2015-01-25T10:29:22.289 # Date (julian) = 2457047.93706353 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6502.3874 6.7339849e+10 0.054303826 0.033003138 -31.614940 57.962186 6504.3041 6.1063889e+10 0.062487184 0.033581090 -31.786707 57.836833 6506.2207 5.5675019e+10 0.070899927 0.034159042 -31.957186 57.711481 6508.1373 5.0858142e+10 0.079571406 0.034736994 -32.127640 57.582393 6510.0539 4.6746789e+10 0.088589582 0.035314946 -32.298084 57.452052 6511.9706 4.3000541e+10 0.097911234 0.035892899 -32.468555 57.325473 6513.8872 3.9623113e+10 0.10755844 0.036470851 -32.639034 57.200121 6515.8038 3.6560241e+10 0.11751843 0.037048803 -32.805703 57.070960 6517.7204 3.3937987e+10 0.12786026 0.037626755 -32.971167 56.940594 6519.6370 3.1513297e+10 0.13849041 0.038204707 -33.132796 56.814065 6521.5537 2.9119276e+10 0.14930998 0.038782659 -33.293248 56.688713 6523.4703 2.6807992e+10 0.15610529 0.039295671 -33.453699 56.559497 6525.3869 2.4643273e+10 0.16181987 0.039738058 -33.614149 56.429131 6527.3035 2.2658019e+10 0.16688598 0.040936834 -33.770705 56.298765 6529.2201 2.0925137e+10 0.17034954 0.042586460 -33.926140 56.168398 6531.1368 1.9359728e+10 0.17339774 0.045427747 -34.081553 56.041972 6533.0534 1.7946395e+10 0.17693144 0.047542276 -34.236960 55.916645 6534.9700 1.6627327e+10 0.17842346 0.048215907 -34.388442 55.787351 6536.8866 1.5362494e+10 0.17818639 0.048583794 -34.538864 55.656985 6538.8033 1.4224896e+10 0.17743865 0.049547823 -34.689286 55.526618 6540.7199 1.3172318e+10 0.17638542 0.051194190 -34.839709 55.396251 6542.6365 1.2156344e+10 0.17448742 0.051243887 -34.990131 55.265885 6544.5531 1.1221321e+10 0.17271090 0.052093048 -35.140553 55.135520 6546.4697 1.0443194e+10 0.17067793 0.052851046 -35.270234 55.020134 6548.3864 9.8620456e+09 0.16915477 0.053783026 -35.394866 54.908394 6550.3030 9.3786740e+09 0.16789170 0.055061223 -35.527024 54.787762 6552.2196 8.8821188e+09 0.16643968 0.055531492 -35.667420 54.657396 6554.1362 8.3297620e+09 0.16426447 0.054835239 -35.810237 54.527031 6556.0528 7.7943200e+09 0.16230628 0.054005356 -35.955644 54.396665 6557.9695 7.3015942e+09 0.16089033 0.053258443 -36.096138 54.266312 6559.8861 6.8392917e+09 0.15880588 0.052287167 -36.231491 54.135971 6561.8027 6.4502557e+09 0.15620589 0.050977123 -36.359428 54.014817 6563.7193 6.1467008e+09 0.15345202 0.049096267 -36.479764 53.903078 6565.6360 5.8981035e+09 0.15120191 0.047596265 -36.602613 53.788228 6567.5526 5.6656897e+09 0.14927461 0.046149972 -36.737991 53.657861 6569.4692 5.3973625e+09 0.14717108 0.044882962 -36.872504 53.527494 6571.3858 5.0936600e+09 0.14524983 0.044397901 -37.002871 53.397129 6573.3024 4.7910050e+09 0.14302786 0.043414783 -37.134132 53.265869 6575.2191 4.4826124e+09 0.14071042 0.042154923 -37.269513 53.130488 6577.1357 4.2089366e+09 0.13789313 0.040007251 -37.399757 52.999454 6579.0523 3.9920192e+09 0.13451075 0.037041745 -37.507198 52.887714 6580.9689 3.8064869e+09 0.13193203 0.035625329 -37.614640 52.775974 6582.8855 3.6225065e+09 0.13023568 0.035052813 -37.741727 52.648272 6584.8022 3.4280208e+09 0.12857602 0.034078541 -37.872093 52.517907 6586.7188 3.2473546e+09 0.12685153 0.033162005 -37.982683 52.399901 6588.6354 3.0987178e+09 0.12525857 0.033167734 -38.090125 52.283864 6590.5520 2.9731691e+09 0.12316015 0.030035206 -38.207163 52.160150 6592.4687 2.8438269e+09 0.12106471 0.027618323 -38.332515 52.029784 6594.3853 2.6872611e+09 0.11896700 0.025961028 -38.455140 51.899432 6596.3019 2.5261347e+09 0.11658727 0.025725901 -38.575455 51.769091 6598.2185 2.3852215e+09 0.11495150 0.025302839 -38.686383 51.646569 6600.1351 2.2730327e+09 0.11430086 0.025267690 -38.789526 51.530532 6602.0518 2.1876565e+09 0.11347124 0.027472465 -38.896449 51.411345 6603.9684 2.0891523e+09 0.11182995 0.026089996 -39.016788 51.280980 6605.8850 1.9826274e+09 0.11141564 0.027407488 -39.132282 51.153844 6607.8016 1.8807499e+09 0.10937294 0.024124094 -39.231128 51.037807 6609.7182 1.7998757e+09 0.10637871 0.023919283 -39.329974 50.921770 6611.6349 1.7227973e+09 0.10368237 0.024553600 -39.443626 50.792858 6613.5515 1.6374576e+09 0.10255437 0.023775932 -39.558950 50.662492 6615.4681 1.5651229e+09 0.10096104 0.023265934 -39.659375 50.545082 6617.3847 1.4999070e+09 0.099600592 0.023566805 -39.758221 50.429045 6619.3013 1.4484057e+09 0.098423027 0.024598625 -39.863686 50.304735 6621.2180 1.3894059e+09 0.097175621 0.025017199 -39.973996 50.174368 6623.1346 1.3256977e+09 0.095568521 0.024541690 -40.077623 50.052354 6625.0512 1.2728659e+09 0.094263844 0.025458717 -40.176470 49.936317 6626.9678 1.2237375e+09 0.092387302 0.025357792 -40.276968 49.815326 6628.8845 1.1726815e+09 0.091612240 0.026062193 -40.382263 49.679948 6630.8011 1.1186221e+09 0.090314059 0.025930276 -40.484745 49.550756 6632.7177 1.0715533e+09 0.089201168 0.026118403 -40.579295 49.439016 6634.6343 1.0294001e+09 0.087935561 0.026373113 -40.673844 49.327276 6636.5509 9.8093476e+08 0.086653209 0.026335800 -40.778419 49.193460 6638.4676 9.2680885e+08 0.085870404 0.025651272 -40.883694 49.058107 6640.3842 8.7495946e+08 0.086216861 0.025223647 -40.974844 48.944953 6642.3008 8.3563912e+08 0.086149321 0.025164006 -41.065096 48.833214 6644.2174 8.0003422e+08 0.085138649 0.025367105 -41.164574 48.706976 6646.1340 7.6152488e+08 0.084205790 0.025989535 -41.269871 48.571596 6648.0507 7.2150974e+08 0.083349330 0.026998203 -41.363196 48.448187 6649.9673 6.8905587e+08 0.082590853 0.026300325 -41.449148 48.332150 6651.8839 6.6159346e+08 0.081921225 0.027161556 -41.536355 48.217368 6653.8005 6.3746472e+08 0.081186909 0.027934385 -41.626607 48.105630 6655.7172 6.1577474e+08 0.079505051 0.027906546 -41.716859 47.993891 6657.6338 5.8659308e+08 0.077968215 0.029636271 -41.816790 47.859334 6659.5504 5.6240012e+08 0.076432887 0.031719785 -41.917070 47.723954 6661.4670 5.3944133e+08 0.074949631 0.032772812 -41.999271 47.607351 6663.3836 5.1101264e+08 0.073728847 0.032376897 -42.080928 47.491313 6665.3003 4.9022117e+08 0.073320886 0.028055142 -42.174579 47.366048 6667.2169 4.6374619e+08 0.072940551 0.027183122 -42.274861 47.235681 6669.1335 4.4283614e+08 0.071948324 0.028218585 -42.363043 47.114622 6671.0501 4.2853586e+08 0.072132828 0.026866063 -42.444698 46.998585 6672.9667 4.0884041e+08 0.071924632 0.027439943 -42.526353 46.882549 6674.8834 3.9812457e+08 0.070585999 0.029699970 -42.608008 46.766513 6676.8000 3.8294009e+08 0.068592973 0.032229312 -42.689710 46.650412 6678.7166 3.6623414e+08 0.068012797 0.030457314 -42.784876 46.515177 6680.6332 3.4845231e+08 0.068815754 0.029578158 -42.880046 46.379927 6682.5499 3.3041983e+08 0.069445878 0.030844652 -42.957476 46.268092 6684.4665 3.1948405e+08 0.069413482 0.032677763 -43.034834 46.156352 6686.3831 3.0976634e+08 0.068453925 0.033983975 -43.120880 46.028681 6688.2997 2.9562368e+08 0.066149589 0.033854375 -43.211117 45.893326 6690.2163 2.8011278e+08 0.064673815 0.033091071 -43.295518 45.771107 6692.1330 2.6629410e+08 0.063735889 0.032610931 -43.377173 45.655071 6694.0496 2.5538307e+08 0.062832928 0.031191536 -43.455794 45.540552 6695.9662 2.4766516e+08 0.062724506 0.029681994 -43.528853 45.428812 6697.8828 2.3845410e+08 0.061990855 0.030202988 -43.602363 45.316453 6699.7994 2.2611262e+08 0.060610573 0.030852773 -43.692617 45.181073 6701.7161 2.1684717e+08 0.058998263 0.032460119 -43.782460 45.046308 6703.6327 2.1048399e+08 0.059150062 0.035258421 -43.859818 44.930271 6705.5493 2.0603869e+08 0.059212547 0.037645166 -43.937176 44.814234 6707.4659 2.0472760e+08 0.058897351 0.040120082 -44.020091 44.684560 6709.3826 1.9438518e+08 0.058295592 0.040889222 -44.105331 44.549180 6711.2992 1.8035180e+08 0.056860773 0.041032609 -44.181916 44.430598 6713.2158 1.6723653e+08 0.055337457 0.044467106 -44.254976 44.318859 6715.1324 1.6146681e+08 0.053820757 0.047514019 -44.332710 44.198048 6717.0490 1.5818535e+08 0.052171975 0.049871235 -44.417951 44.062667 6718.9657 1.5511494e+08 0.050233410 0.051316354 -44.496775 43.934819 6720.8823 1.4519783e+08 0.050945666 0.050317539 -44.565537 43.818782 6722.7989 1.3514486e+08 0.050488305 0.049617555 -44.634569 43.702745 6724.7155 1.3122229e+08 0.047309540 0.043951592 -44.707628 43.586708 6726.6321 1.3082771e+08 0.045368794 0.040957069 -44.780687 43.470671 6728.5488 1.2941390e+08 0.045212903 0.040405879 -44.859019 43.344093 6730.4654 1.2183802e+08 0.044074863 0.041017004 -44.939244 43.213728 6732.3820 1.1437727e+08 0.043055248 0.043810535 -45.010972 43.093983 6734.2986 1.0693535e+08 0.042746047 0.049335632 -45.079735 42.977945 6736.2153 1.0485177e+08 0.044529541 0.051168772 -45.153242 42.853902 6738.1319 1.0185754e+08 0.045818906 0.058047103 -45.233451 42.718549 6740.0485 95601679. 0.045904760 0.064133203 -45.308856 42.593106 6741.9651 89696532. 0.044267396 0.068511253 -45.377619 42.481367 6743.8817 84438784. 0.040298611 0.076995602 -45.446980 42.367435 6745.7984 78878268. 0.039531288 0.078902509 -45.522192 42.232054 6747.7150 73649276. 0.035770750 0.067115022 -45.596769 42.098578 6749.6316 69666391. 0.034682038 0.072105001 -45.665532 41.982541 6751.5482 68375535. 0.032778782 0.073943462 -45.734294 41.866504 6753.4648 66539270. 0.031963864 0.074481603 -45.808033 41.735542 6755.3815 60398984. 0.036745827 0.074438098 -45.883245 41.600161 6757.2981 55264453. 0.029702271 0.075835449 -45.950104 41.483155 6759.2147 53439365. 0.017843526 0.075871766 -46.014568 41.371416