# # 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 = 61.052182 km # Date (UTC) = 2011-12-12T10:34:21.207 # Date (julian) = 2455907.94052323 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6505.1997 1.1088486e+11 0.069895316 0.033851174 94.497362 32.870747 6508.0322 9.1002905e+10 0.081718237 0.034705283 94.571457 32.737378 6510.8646 7.7055663e+10 0.093870364 0.035559392 94.645552 32.604009 6513.6970 6.6238974e+10 0.10637259 0.036413501 94.719647 32.470639 6516.5294 5.7613476e+10 0.11930221 0.037267610 94.793742 32.337269 6519.3618 5.0396490e+10 0.13265770 0.038121718 94.867837 32.203899 6522.1943 4.4177084e+10 0.14587685 0.038968118 94.945540 32.054322 6525.0267 3.8863302e+10 0.15279179 0.039779171 95.022714 31.907120 6527.8591 3.4260950e+10 0.15699192 0.041340183 95.096809 31.773750 6530.6915 3.0453446e+10 0.16031068 0.044796803 95.170177 31.640380 6533.5239 2.7300955e+10 0.16345990 0.047742243 95.239331 31.507010 6536.3564 2.4518784e+10 0.16391729 0.048109340 95.308485 31.373641 6539.1888 2.2207310e+10 0.16543506 0.049872135 95.377640 31.240272 6542.0212 2.0156079e+10 0.16575639 0.051010285 95.447643 31.105265 6544.8536 1.8196660e+10 0.16602558 0.052336817 95.525443 30.955222 6547.6860 1.6363739e+10 0.16566081 0.053548251 95.600663 30.810154 6550.5185 1.4698858e+10 0.16502747 0.055115176 95.669826 30.676767 6553.3509 1.3324016e+10 0.16332576 0.055158686 95.738987 30.543384 6556.1833 1.2217233e+10 0.16013278 0.053986178 95.808141 30.410014 6559.0157 1.1234538e+10 0.15654752 0.052385408 95.877296 30.276645 6561.8481 1.0355122e+10 0.15302545 0.050954738 95.946450 30.143275 6564.6806 9.5749179e+09 0.14986855 0.048463169 96.014490 30.009906 6567.5130 8.8773034e+09 0.14749719 0.046183452 96.078703 29.876537 6570.3454 8.2195655e+09 0.14569870 0.044774433 96.145653 29.740926 6573.1778 7.5701091e+09 0.14369583 0.043514786 96.223464 29.596418 6576.0102 6.9373739e+09 0.14124112 0.041359609 96.295811 29.456388 6578.8427 6.3633314e+09 0.13861255 0.037318957 96.360028 29.323018 6581.6751 5.8902478e+09 0.13638949 0.035392186 96.424244 29.189648 6584.5075 5.4920728e+09 0.13423641 0.034239057 96.488458 29.056279 6587.3399 5.1434269e+09 0.13218086 0.033233683 96.554416 28.922909 6590.1723 4.8249506e+09 0.12977310 0.030741487 96.623570 28.789540 6593.0048 4.5094177e+09 0.12684007 0.027097794 96.693741 28.652518 6595.8372 4.1969627e+09 0.12340889 0.025710389 96.765986 28.508032 6598.6696 3.8953402e+09 0.12085597 0.025087474 96.833986 28.369418 6601.5020 3.6265645e+09 0.12034701 0.027282114 96.898209 28.236030 6604.3344 3.4033884e+09 0.11845902 0.026269857 96.962426 28.102652 6607.1669 3.2095872e+09 0.11669579 0.025377504 97.026640 27.969282 6609.9993 3.0195668e+09 0.11235749 0.024002766 97.092042 27.830571 6612.8317 2.8281782e+09 0.10926577 0.023699335 97.158730 27.686084 6615.6641 2.6414208e+09 0.10672526 0.023271965 97.223733 27.549170 6618.4965 2.4683916e+09 0.10497697 0.024145746 97.287946 27.415801 6621.3290 2.3194206e+09 0.10344403 0.024980410 97.352168 27.282420 6624.1614 2.1841610e+09 0.10124518 0.024948698 97.416394 27.149032 6626.9938 2.0648025e+09 0.099428547 0.025324703 97.477487 27.018780 6629.8262 1.9593150e+09 0.098409461 0.025959721 97.536760 26.890350 6632.6586 1.8527040e+09 0.096705659 0.026111322 97.603920 26.748780 6635.4911 1.7429689e+09 0.095140500 0.026473430 97.676166 26.598736 6638.3235 1.6401235e+09 0.093889311 0.025657549 97.737923 26.466166 6641.1559 1.5447092e+09 0.094369337 0.025148830 97.797197 26.337736 6643.9883 1.4571115e+09 0.093505169 0.025341844 97.862283 26.192361 6646.8207 1.3706579e+09 0.092357523 0.026344993 97.928970 26.042319 6649.6532 1.2876188e+09 0.091265847 0.026733328 97.988369 25.913538 6652.4856 1.2175239e+09 0.090684992 0.027384126 98.047654 25.785091 6655.3180 1.1608038e+09 0.089044913 0.027741618 98.106927 25.651917 6658.1504 1.1063149e+09 0.086742003 0.030327868 98.166200 25.518547 6660.9828 1.0490921e+09 0.084616628 0.032519360 98.232412 25.374773 6663.8153 9.9216405e+08 0.082677581 0.032257282 98.298088 25.232478 6666.6477 9.4153926e+08 0.082262261 0.027034806 98.357365 25.104047 6669.4801 8.9613606e+08 0.080797490 0.027862596 98.417472 24.973196 6672.3125 8.5147608e+08 0.080323381 0.027060748 98.484155 24.823153 6675.1450 8.0625819e+08 0.078288941 0.030075991 98.548526 24.679859 6677.9774 7.6260169e+08 0.075955545 0.030968782 98.607810 24.551412 6680.8098 7.2373162e+08 0.076127540 0.029616284 98.667627 24.418340 6683.6422 6.8786427e+08 0.076579198 0.032129750 98.728756 24.273855 6686.4746 6.5364972e+08 0.075551368 0.034037233 98.788977 24.134804 6689.3071 6.2295164e+08 0.072357645 0.033739627 98.848251 24.001433 6692.1395 5.9404498e+08 0.071312339 0.032603367 98.908386 23.862901 6694.9719 5.6493458e+08 0.070727956 0.029898867 98.969515 23.718415 6697.8043 5.3746474e+08 0.070072342 0.030193053 99.029412 23.584605 6700.6367 5.1263926e+08 0.068003410 0.031140002 99.088689 23.456175 6703.4692 4.9257770e+08 0.067458056 0.034849209 99.149152 23.317462 6706.3016 4.7137346e+08 0.067485259 0.038971272 99.210281 23.172976 6709.1340 4.4618124e+08 0.066831870 0.041047316 99.271410 23.028489 6711.9664 4.2012764e+08 0.064471017 0.041791749 99.332462 22.884668 6714.7988 4.0074255e+08 0.061979197 0.047363465 99.391743 22.756221 6717.6313 3.8746384e+08 0.059349019 0.049835222 99.451056 22.627496 6720.4637 3.7287664e+08 0.058043203 0.050366041 99.512185 22.483011 6723.2961 3.5470481e+08 0.056926905 0.049534082 99.573314 22.338526 6726.1285 3.3297103e+08 0.052327210 0.040952527 99.634443 22.194040 6728.9609 3.1517323e+08 0.051501374 0.040990063 99.692730 22.056271 6731.7934 3.0164300e+08 0.049104843 0.043328954 99.747066 21.927841 6734.6258 2.8961015e+08 0.048374218 0.049315948 99.804078 21.793086 6737.4582 2.7799438e+08 0.050377948 0.055595169 99.865207 21.648599 6740.2906 2.6452144e+08 0.050192985 0.064546834 99.926337 21.504113 6743.1230 2.5214377e+08 0.045934346 0.071877461 99.987466 21.359627 6745.9555 2.4118244e+08 0.042755901 0.078968554 100.04418 21.215124 6748.7879 2.2925946e+08 0.038596665 0.071161964 100.09976 21.070616 6751.6203 2.1998590e+08 0.034243391 0.073973937 100.16087 20.926130 6754.4527 2.0964238e+08 0.031932200 0.075485440 100.22200 20.781644 6757.2851 1.9931365e+08 0.028981048 0.075874729 100.28313 20.637157 6760.1176 1.9408526e+08 0.029993658 0.076285456 100.34205 20.492670 6762.9500 1.8716822e+08 0.035017985 0.076518447 100.39762 20.348185 6765.7824 1.8053938e+08 0.037782418 0.079674024 100.45651 20.203700 6768.6148 1.7152831e+08 0.033477687 0.083068302 100.51764 20.059214 6771.4472 1.6011530e+08 0.027955139 0.090389901 100.57433 19.919161 6774.2797 1.5179524e+08 0.022666143 0.097259765 100.62990 19.780235 6777.1121 1.4758809e+08 0.017348189 0.10412963 100.69102 19.635756 6779.9445 1.4183308e+08 0.012031501 0.11099949 100.75105 19.491270 6782.7769 1.3742837e+08 0.0067094297 0.11786936 100.80662 19.346783 6785.6093 1.3096620e+08 0.0013766238 0.12473922 100.86441 19.202296 6788.4418 1.2393996e+08 -0.0039710274 0.13160909 100.92554 19.057810 6791.2742 1.1824340e+08 -0.0093119494 0.13847895 100.98334 18.916645 6794.1066 1.1158933e+08 -0.014677105 0.14534882 101.03892 18.777696 6796.9390 1.0780992e+08 -0.019993044 0.15221868 101.09450 18.634313 6799.7714 1.0432900e+08 -0.025293355 0.15908855 101.15007 18.489834 6802.6039 1.0113318e+08 -0.030575402 0.16595841 101.20564 18.350904 6805.4363 93956269. -0.035984262 0.17282828 101.26281 18.206690 6808.2687 87995640. -0.041358346 0.17969814 101.32632 18.041559 6811.1011 84320569. -0.046614007 0.18656801 101.38485 17.892863 6813.9335 81415825. -0.051800547 0.19343787 101.44042 17.753934 6816.7660 79667610. -0.056899836 0.20030773 101.50257 17.593317 6819.5984 75316971. -0.062169663 0.20717760 101.56407 17.434821 6822.4308 71798474. -0.067410259 0.21404746 101.61964 17.295893 6825.2632 70143111. -0.072526755 0.22091733 101.67522 17.154442 6828.0956 67396615. -0.077761077 0.22778719 101.73079 17.009955 6830.9281 65892333. -0.082926430 0.23465706 101.79155 16.856117 6833.7605 62423671. -0.088358595 0.24152692 101.85506 16.696832 6836.5929 60991705. -0.093674761 0.24839679 101.91857 16.531703 6839.4253 60784978. -0.098966165 0.25526665 101.97527 16.379811 6842.2578 57311423. -0.10490915 0.26213652 102.02528 16.240882 6845.0902 53911674. -0.11128773 0.26900638 102.08482 16.087943 6847.9226 50045190. -0.11857639 0.27587625 102.14729 15.931039 6850.7550 48748030. -0.12664566 0.28274611 102.20286 15.786552 6853.5874 48511713. -0.13791247 0.28961598 102.25896 15.637324 6856.4199 48504332. -0.18003597 0.29648584 102.31612 15.478545 6859.2523 47528355. -0.15360425 0.30335570 102.37809 15.319766 6862.0847 46056565. -0.088472513 0.31022557 102.44044 15.159826