# # 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 = 38.196898 km # Date (UTC) = 2016-12-31T09:42:58.167 # Date (julian) = 2457753.90483989 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6495.0037 1.4540935e+11 0.026657039 0.030776595 -25.773977 49.271177 6497.0102 1.1901249e+11 0.033781558 0.031381634 -25.864968 49.183686 6499.0166 9.8846549e+10 0.040888003 0.031986674 -25.955950 49.098354 6501.0231 8.5782609e+10 0.048315730 0.032591713 -26.046928 49.014374 6503.0295 7.6156004e+10 0.056197805 0.033196752 -26.137906 48.930394 6505.0360 6.6879020e+10 0.064350240 0.033801791 -26.234516 48.835484 6507.0424 5.8601741e+10 0.072866177 0.034406831 -26.332931 48.737068 6509.0489 5.1886461e+10 0.081976198 0.035011870 -26.428975 48.641025 6511.0553 4.6264932e+10 0.091716471 0.035616909 -26.516454 48.553546 6513.0618 4.1543880e+10 0.10212979 0.036221948 -26.603932 48.466067 6515.0682 3.7623897e+10 0.11327016 0.036826988 -26.691415 48.379841 6517.0747 3.4205331e+10 0.12502765 0.037432027 -26.778906 48.295849 6519.0811 3.1201006e+10 0.13736403 0.038037066 -26.866397 48.211858 6521.0876 2.8535491e+10 0.15018388 0.038642105 -26.953881 48.126117 6523.0940 2.6133350e+10 0.16027661 0.039202411 -27.041360 48.038638 6525.1005 2.3923962e+10 0.16835352 0.039770751 -27.128839 47.951159 6527.1069 2.1735937e+10 0.17441932 0.040794080 -27.220824 47.856639 6529.1133 1.9519494e+10 0.17827876 0.042416339 -27.315303 47.758224 6531.1198 1.7491416e+10 0.18113118 0.045403045 -27.408695 47.661303 6533.1262 1.5772090e+10 0.18350076 0.047573238 -27.492674 47.577324 6535.1327 1.4391546e+10 0.18322185 0.048166734 -27.576654 47.493345 6537.1391 1.3221409e+10 0.18192735 0.048750826 -27.660634 47.408506 6539.1456 1.2149045e+10 0.18018724 0.049819863 -27.744613 47.321027 6541.1520 1.1194942e+10 0.17823787 0.051277223 -27.828593 47.233548 6543.1585 1.0331196e+10 0.17623897 0.051423489 -27.911220 47.146065 6545.1649 9.5764886e+09 0.17443395 0.052457045 -27.991712 47.058574 6547.1714 8.8720834e+09 0.17228630 0.053352539 -28.072203 46.971084 6549.1778 8.2268597e+09 0.16976205 0.054147507 -28.152689 46.883600 6551.1843 7.6413736e+09 0.16769242 0.055300437 -28.233170 46.796121 6553.1907 7.1068906e+09 0.16579208 0.055239189 -28.313650 46.708642 6555.1972 6.5878098e+09 0.16346145 0.054687686 -28.400898 46.616454 6557.2036 6.0699595e+09 0.16078419 0.053738472 -28.491440 46.521975 6559.2101 5.5553021e+09 0.15753172 0.052363470 -28.580650 46.428422 6561.2165 5.0912296e+09 0.15416268 0.051265982 -28.661131 46.340943 6563.2230 4.7128399e+09 0.15096156 0.049670437 -28.741611 46.253464 6565.2294 4.3837967e+09 0.14773964 0.048057884 -28.821134 46.165982 6567.2359 4.0909237e+09 0.14454513 0.046417752 -28.898126 46.078491 6569.2423 3.8188463e+09 0.14121886 0.044868196 -28.975118 45.991001 6571.2488 3.5717106e+09 0.13818416 0.044435332 -29.052106 45.903515 6573.2552 3.3623246e+09 0.13461056 0.043452676 -29.129087 45.816036 6575.2617 3.1618474e+09 0.13095477 0.042112175 -29.206068 45.728558 6577.2681 2.9606434e+09 0.12742184 0.039799230 -29.283049 45.641079 6579.2746 2.7802624e+09 0.12397070 0.036919558 -29.360030 45.553600 6581.2810 2.6213752e+09 0.12141493 0.035511515 -29.437012 45.466121 6583.2875 2.4681726e+09 0.11942302 0.034876167 -29.517982 45.373733 6585.2939 2.3125879e+09 0.11736954 0.033735800 -29.600652 45.279255 6587.3004 2.1567236e+09 0.11546290 0.033224917 -29.682404 45.185905 6589.3068 2.0115122e+09 0.11338862 0.032437303 -29.759386 45.098426 6591.3133 1.8887464e+09 0.11081363 0.028848439 -29.836367 45.010947 6593.3197 1.7764519e+09 0.10853282 0.026804994 -29.912290 44.923464 6595.3262 1.6679790e+09 0.10590461 0.025657394 -29.985782 44.835974 6597.3326 1.5657544e+09 0.10340019 0.025617771 -30.059275 44.748484 6599.3390 1.4738452e+09 0.10160053 0.024950122 -30.132762 44.660998 6601.3455 1.3928407e+09 0.10103844 0.027208399 -30.206244 44.573519 6603.3519 1.3196329e+09 0.099449274 0.026454923 -30.279726 44.486040 6605.3584 1.2540683e+09 0.098372206 0.026965707 -30.356296 44.392130 6607.3648 1.1766125e+09 0.096472171 0.024986568 -30.435028 44.293715 6609.3713 1.0968654e+09 0.093266869 0.023816222 -30.513510 44.195989 6611.3777 1.0200697e+09 0.090354692 0.024717569 -30.586992 44.112009 6613.3842 9.5015383e+08 0.089107482 0.023714550 -30.660474 44.028028 6615.3906 8.9851300e+08 0.087383345 0.023263550 -30.733294 43.943381 6617.3971 8.4904134e+08 0.085897593 0.023570902 -30.803286 43.855891 6619.4035 8.0294543e+08 0.084859810 0.024623280 -30.873279 43.768400 6621.4100 7.5809157e+08 0.083802776 0.024953556 -30.946177 43.677278 6623.4164 7.0872842e+08 0.082426082 0.024646107 -31.024910 43.578862 6625.4229 6.6096866e+08 0.081662726 0.025902227 -31.103643 43.480447 6627.4293 6.1812265e+08 0.080247192 0.025482653 -31.172671 43.390695 6629.4358 5.8111424e+08 0.079548408 0.026030315 -31.239155 43.303217 6631.4422 5.4951087e+08 0.078269543 0.025975687 -31.305638 43.215738 6633.4487 5.1996491e+08 0.077333545 0.026230587 -31.375392 43.128259 6635.4551 4.9117978e+08 0.076288003 0.026468040 -31.445375 43.040780 6637.4616 4.6612691e+08 0.075360758 0.025935348 -31.515727 42.952464 6639.4680 4.3755177e+08 0.075059268 0.025460794 -31.590523 42.854048 6641.4745 4.0990082e+08 0.075763810 0.025149912 -31.665319 42.755632 6643.4809 3.8117595e+08 0.075409418 0.025265231 -31.735662 42.663076 6645.4874 3.5571298e+08 0.074785512 0.025679997 -31.802154 42.575586 6647.4938 3.3766227e+08 0.073962662 0.026697775 -31.868646 42.488095 6649.5003 3.2163341e+08 0.073177738 0.026944100 -31.935134 42.402989 6651.5067 3.0961478e+08 0.072835408 0.026872487 -32.001618 42.319010 6653.5132 2.9790992e+08 0.072418219 0.027787663 -32.068103 42.235031 6655.5196 2.8293406e+08 0.071109662 0.027824919 -32.141411 42.139199 6657.5261 2.6173159e+08 0.069763088 0.029511321 -32.216206 42.040784 6659.5325 2.4676724e+08 0.068465212 0.031723517 -32.288667 41.945439 6661.5390 2.3508542e+08 0.067168522 0.032809451 -32.355151 41.857960 6663.5454 2.2489541e+08 0.066006381 0.032332068 -32.421635 41.770481 6665.5519 2.1830144e+08 0.065854817 0.027642902 -32.489969 41.678376 6667.5583 2.0642361e+08 0.065494789 0.027308531 -32.560828 41.579961 6669.5647 1.8990308e+08 0.064961330 0.027775666 -32.631687 41.481546 6671.5712 1.7479398e+08 0.065166268 0.026873488 -32.695603 41.392774 6673.5776 1.6413814e+08 0.064769390 0.028323129 -32.758597 41.305283 6675.5841 1.5627924e+08 0.063022201 0.030917112 -32.821788 41.217517 6677.5905 1.5407665e+08 0.061611829 0.031518700 -32.892647 41.119102 6679.5970 1.4864976e+08 0.061456802 0.029774444 -32.963507 41.020686 6681.6034 1.4134471e+08 0.062251701 0.030120308 -33.030547 40.929272 6683.6099 1.3178904e+08 0.062567112 0.032082379 -33.093532 40.845292 6685.6163 1.1924869e+08 0.062152724 0.033355842 -33.156516 40.761312 6687.6228 1.0763641e+08 0.060023683 0.033995566 -33.221971 40.668278 6689.6292 1.0005204e+08 0.057695534 0.033449612 -33.288893 40.569862 6691.6357 97351249. 0.056581243 0.032851284 -33.355472 40.472397 6693.6421 95748215. 0.055556723 0.031383798 -33.418457 40.384918 6695.6486 95112591. 0.055172862 0.029740337 -33.481442 40.297439 6697.6550 90929434. 0.054310496 0.030174160 -33.545329 40.207455 6699.6615 88532687. 0.052753692 0.030980078 -33.612252 40.109040 6701.6679 82742041. 0.050813707 0.032389483 -33.679175 40.010625 6703.6744 77401314. 0.050660879 0.035362734 -33.740980 39.919735 6705.6808 73687691. 0.050446211 0.037878972 -33.800473 39.832244 6707.6873 71545368. 0.049894865 0.040088375 -33.859966 39.744754 6709.6937 70221057. 0.048791597 0.040691304 -33.925637 39.651454 6711.7002 67704969. 0.046566139 0.041488833 -33.992560 39.556975 6713.7066 63217867. 0.043917785 0.046242306 -34.059483 39.461351 6715.7131 58930850. 0.041161134 0.048107892 -34.126405 39.362936 6717.7195 58074847. 0.037795164 0.049829763 -34.193327 39.264520 6719.7260 56895474. 0.032574239 0.050680121 -34.252037 39.174317 6721.7324 55541918. 0.0086998393 0.050524578 -34.308024 39.086838 6723.7389 52977862. 0.027310986 0.049781019 -34.364010 38.999359 6725.7453 49544473. 0.070040932 0.041110461 -34.429763 38.902114