# # 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 = 52.653508 km # Date (UTC) = 2016-01-27T09:27:38.200 # Date (julian) = 2457414.89419213 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6499.0682 6.7953324e+10 0.039594670 0.032002234 110.12070 48.057020 6501.2516 6.0924841e+10 0.048004038 0.032660613 110.25554 47.869280 6503.4349 5.4610557e+10 0.056680412 0.033318992 110.37549 47.709350 6505.6182 4.9177108e+10 0.065731491 0.033977372 110.50193 47.537299 6507.8016 4.4744076e+10 0.075318917 0.034635751 110.63902 47.345374 6509.9849 4.0451162e+10 0.085274899 0.035294131 110.75509 47.177625 6512.1682 3.6831536e+10 0.095833817 0.035952510 110.86932 47.012948 6514.3516 3.3940784e+10 0.10712023 0.036610890 110.98356 46.853015 6516.5349 3.0996654e+10 0.11875336 0.037269269 111.10448 46.679715 6518.7183 2.8128525e+10 0.13076171 0.037927648 111.23468 46.487836 6520.9016 2.5387650e+10 0.14313478 0.038586028 111.34409 46.321121 6523.0849 2.3055233e+10 0.15302209 0.039200161 111.45262 46.156668 6525.2683 2.1282721e+10 0.16049893 0.039751599 111.56114 45.996737 6527.4516 1.9841610e+10 0.16692365 0.041044337 111.66967 45.836806 6529.6349 1.8517283e+10 0.17237347 0.043247181 111.77819 45.676875 6531.8183 1.7118605e+10 0.17692445 0.046419684 111.90204 45.489514 6534.0016 1.5675226e+10 0.17921847 0.047945007 112.02546 45.300391 6536.1849 1.4264659e+10 0.17938446 0.047955977 112.12828 45.140461 6538.3683 1.3068879e+10 0.17994407 0.049336015 112.23109 44.980528 6540.5516 1.2046332e+10 0.17864565 0.051114701 112.33390 44.820595 6542.7350 1.1149391e+10 0.17600558 0.051281268 112.43672 44.656402 6544.9183 1.0317123e+10 0.17396013 0.052389285 112.53953 44.490774 6547.1016 9.5567701e+09 0.17148674 0.053326013 112.64234 44.330802 6549.2850 8.8750579e+09 0.16892574 0.054256684 112.74376 44.170869 6551.4683 8.2427156e+09 0.16697896 0.055400133 112.84086 44.010939 6553.6516 7.6795157e+09 0.16468011 0.055007496 112.93796 43.848186 6555.8350 7.1502296e+09 0.16213795 0.054151784 113.03506 43.682542 6558.0183 6.6529402e+09 0.15995832 0.053223699 113.13215 43.521167 6560.2017 6.1837492e+09 0.15709951 0.052092495 113.22923 43.361268 6562.3850 5.7449255e+09 0.15402310 0.050513573 113.32633 43.201337 6564.5683 5.3525202e+09 0.15098008 0.048514033 113.42343 43.040028 6566.7517 5.0051306e+09 0.14835103 0.046757672 113.52053 42.874384 6568.9350 4.6954020e+09 0.14567670 0.044912177 113.61483 42.711542 6571.1183 4.4060384e+09 0.14353521 0.044470956 113.70623 42.551609 6573.3017 4.1233076e+09 0.14098025 0.043415397 113.79761 42.387453 6575.4850 3.8485335e+09 0.13807266 0.041888092 113.88900 42.221811 6577.6683 3.5912316e+09 0.13487961 0.039170564 113.98039 42.061815 6579.8517 3.3627960e+09 0.13141671 0.036602290 114.07178 41.901890 6582.0350 3.1623830e+09 0.12800897 0.035284265 114.16315 41.741991 6584.2184 2.9794536e+09 0.12451096 0.034396565 114.25453 41.579293 6586.4017 2.8038922e+09 0.12139084 0.033166104 114.34592 41.413650 6588.5850 2.6265165e+09 0.11898809 0.033184558 114.43310 41.252213 6590.7684 2.4642340e+09 0.11637576 0.029632785 114.51877 41.092282 6592.9517 2.3389784e+09 0.11429012 0.027149132 114.59721 40.954876 6595.1350 2.2310000e+09 0.11189657 0.025637575 114.67555 40.817797 6597.3184 2.1300327e+09 0.10943885 0.025622260 114.76081 40.653777 6599.5017 2.0223894e+09 0.10810939 0.024959906 114.84648 40.489233 6601.6851 1.9076698e+09 0.10794092 0.027368310 114.93216 40.329301 6603.8684 1.7935659e+09 0.10662291 0.026149191 115.01784 40.169369 6606.0517 1.6851204e+09 0.10636819 0.027411017 115.10351 40.009437 6608.2351 1.5896112e+09 0.10406146 0.023726157 115.17734 39.865309 6610.4184 1.5121358e+09 0.10101417 0.024402748 115.24587 39.728252 6612.6017 1.4531942e+09 0.099143294 0.023871159 115.32551 39.572673 6614.7851 1.3796245e+09 0.097975770 0.023399609 115.41119 39.407029 6616.9684 1.3055247e+09 0.096520749 0.023434291 115.49174 39.246511 6619.1517 1.2252120e+09 0.095841967 0.024562528 115.57254 39.086580 6621.3351 1.1488517e+09 0.094962270 0.024978382 115.65822 38.926650 6623.5184 1.0845351e+09 0.093208674 0.024683892 115.73712 38.773823 6625.7018 1.0308360e+09 0.091808669 0.026235009 115.80566 38.631846 6627.8851 9.8881908e+08 0.089776763 0.025658708 115.87823 38.483529 6630.0684 9.4390830e+08 0.088204541 0.025928470 115.95820 38.323597 6632.2518 8.9360108e+08 0.086286570 0.026062534 116.03473 38.163665 6634.4351 8.4214231e+08 0.084678782 0.026358581 116.10898 38.003734 6636.6184 8.0334941e+08 0.083080764 0.026309588 116.17837 37.863264 6638.8018 7.7252250e+08 0.082014491 0.025636711 116.24691 37.726184 6640.9851 7.4063253e+08 0.082785269 0.025150122 116.32468 37.566022 6643.1684 7.0307748e+08 0.082637177 0.025218052 116.40430 37.400739 6645.3518 6.6543175e+08 0.081919338 0.025616483 116.47855 37.240808 6647.5351 6.2855268e+08 0.081119794 0.026719525 116.54955 37.087896 6649.7185 5.9774447e+08 0.080472301 0.026643326 116.61319 36.950815 6651.9018 5.7198870e+08 0.080147917 0.027175262 116.67965 36.807688 6654.0851 5.4713987e+08 0.079616618 0.027999958 116.75390 36.647758 6656.2685 5.2183077e+08 0.077973621 0.028259053 116.82815 36.487827 6658.4518 4.9453885e+08 0.076654419 0.030862368 116.90240 36.327896 6660.6351 4.6934686e+08 0.075407468 0.032203313 116.96856 36.185401 6662.8185 4.5220301e+08 0.074194993 0.032585056 117.03221 36.048319 6665.0018 4.3535408e+08 0.073570248 0.028544152 117.10350 35.890661 6667.1852 4.1558618e+08 0.073178472 0.027171468 117.17775 35.725018 6669.3685 3.9273205e+08 0.072237000 0.027977236 117.25200 35.564912 6671.5518 3.7129170e+08 0.072295062 0.026873212 117.32286 35.409983 6673.7352 3.5523432e+08 0.071636668 0.028558710 117.38161 35.272904 6675.9185 3.4150728e+08 0.069423845 0.031557625 117.44209 35.131800 6678.1018 3.3083776e+08 0.068287985 0.030868500 117.51062 34.971901 6680.2852 3.1858394e+08 0.068531593 0.029502998 117.57707 34.821706 6682.4685 3.0636929e+08 0.069163652 0.030782504 117.64071 34.684624 6684.6518 2.9230395e+08 0.069199128 0.032687170 117.70623 34.538799 6686.8352 2.8054075e+08 0.067846703 0.034247008 117.77477 34.378867 6689.0185 2.6465763e+08 0.065168429 0.033999351 117.84331 34.218936 6691.2019 2.4898903e+08 0.064511520 0.032953637 117.91185 34.059005 6693.3852 2.3050597e+08 0.063893234 0.031471943 117.97177 33.919209 6695.5685 2.1375499e+08 0.063766039 0.029755041 118.03052 33.782127 6697.7519 2.0407613e+08 0.063223254 0.030186416 118.09748 33.625885 6699.9352 1.9279974e+08 0.061890322 0.030727504 118.16473 33.467961 6702.1185 1.8880032e+08 0.060329499 0.032971387 118.21858 33.330882 6704.3019 1.8353031e+08 0.060780568 0.036325792 118.27310 33.192769 6706.4852 1.7580957e+08 0.060772638 0.039290886 118.34164 33.032836 6708.6686 1.7074884e+08 0.060359302 0.040771610 118.40850 32.872913 6710.8519 1.6267752e+08 0.058898163 0.040663242 118.47132 32.713013 6713.0352 1.5911500e+08 0.056947077 0.043814035 118.53192 32.565513 6715.2186 1.5632682e+08 0.054983277 0.047602130 118.59067 32.428434 6717.4019 1.4844728e+08 0.053025790 0.049849409 118.65147 32.279911 6719.5852 1.4388188e+08 0.051375696 0.050813820 118.71430 32.119980 6721.7686 1.3748689e+08 0.051702869 0.050535474 118.77712 31.960048 6723.9519 1.3089383e+08 0.049894015 0.049899841 118.83991 31.800231 6726.1352 1.2662363e+08 0.046071009 0.040952587 118.89381 31.667911 6728.3186 1.2264013e+08 0.045493312 0.040079639 118.94766 31.535728 6730.5019 1.1989572e+08 0.044029922 0.041067099 119.01557 31.376998 6732.6853 1.1725342e+08 0.042742065 0.043866363 119.08008 31.221772 6734.8686 1.1649406e+08 0.042721316 0.049301339 119.12904 31.084690 6737.0519 1.1519329e+08 0.044559568 0.054300996 119.18026 30.943877 6739.2353 1.1280137e+08 0.045293492 0.063114476 119.24309 30.783946 6741.4186 1.1014285e+08 0.043908801 0.066952579 119.30592 30.624015 6743.6019 1.0547545e+08 0.039775228 0.075108129 119.36875 30.464083 6745.7853 1.0099936e+08 0.038080532 0.078897011 119.42564 30.319275 6747.9686 95236240. 0.034106213 0.067027704 119.47949 30.182195 6750.1520 85764607. 0.031646381 0.072263598 119.53536 30.034521 6752.3353 81599463. 0.029051447 0.073746483 119.59247 29.880333 6754.5186 75828847. 0.027858995 0.075379455 119.65454 29.721159 6756.7020 75119558. 0.025281959 0.075973165 119.71670 29.561227 6758.8853 73155218. 0.026032212 0.075577407 119.77382 29.401294 6761.0686 69933840. 0.026751961 0.077973896 119.82974 29.251535 6763.2520 69357958. 0.032131347 0.077205156 119.88360 29.119351 6765.4353 63052886. 0.034565379 0.079610661 119.93851 28.978176 6767.6186 62884855. 0.033039861 0.081283041 119.99562 28.818244 6769.8020 61596584. 0.028421964 0.086399425 120.05274 28.658312 6771.9853 57082144. 0.024642074 0.091694977 120.10987 28.498381 6774.1687 54213477. 0.020845062 0.096990529 120.16027 28.361273 6776.3520 50442853. 0.017060820 0.10228608 120.20923 28.229089 6778.5353 50493633. 0.013223117 0.10758163 120.26455 28.075263 6780.7187 52228522. 0.0093721527 0.11287718 120.32167 27.915333 6782.9020 50436925. 0.0055738975 0.11817274 120.37877 27.755432 6785.0853 47000561. 0.0018608610 0.12346829 120.43588 27.597111 6787.2687 42615111. -0.0019100783 0.12876384 120.49300 27.442892 6789.4520 41946961. -0.0063298121 0.13405939 120.55012 27.285661 6791.6354 41120484. -0.012050849 0.13935494 120.60724 27.125729 6796.0020 42996585. -0.017271463 0.14994605 120.69828 26.855161 6798.1854 43438179. -0.018495583 0.15524160 120.75192 26.702611