# # 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 = 39.222265 km # Date (UTC) = 2010-12-17T08:57:42.718 # Date (julian) = 2455547.87341109 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6501.4492 1.8960296e+11 0.054278723 0.032720218 -20.939565 44.334584 6503.7353 1.5398894e+11 0.063572021 0.033409574 -21.034440 44.223843 6506.0213 1.2311749e+11 0.072825984 0.034098930 -21.133115 44.107228 6508.3074 1.0042783e+11 0.082250983 0.034788286 -21.225458 43.997790 6510.5935 8.3773271e+10 0.091976674 0.035477642 -21.309180 43.898120 6512.8795 7.1593579e+10 0.10216994 0.036166998 -21.392902 43.798450 6515.1656 6.2388267e+10 0.11291433 0.036856354 -21.476625 43.695131 6517.4517 5.4623185e+10 0.12410474 0.037545710 -21.560348 43.591473 6519.7377 4.8406306e+10 0.13589181 0.038235066 -21.644075 43.489433 6522.0238 4.3056579e+10 0.14811993 0.038923478 -21.727809 43.389751 6524.3098 3.8495403e+10 0.15459547 0.039537033 -21.811542 43.290068 6526.5959 3.4699618e+10 0.16047075 0.040292822 -21.891682 43.186813 6528.8820 3.1395683e+10 0.16540654 0.042142148 -21.971418 43.083157 6531.1680 2.8312974e+10 0.16975558 0.045473246 -22.056801 42.976190 6533.4541 2.5317578e+10 0.17385370 0.047712562 -22.150990 42.864060 6535.7402 2.2526243e+10 0.17495206 0.047903222 -22.242850 42.753295 6538.0262 2.0135654e+10 0.17679697 0.049169446 -22.322586 42.649638 6540.3123 1.8247535e+10 0.17690249 0.051001629 -22.402322 42.545980 6542.5983 1.6695168e+10 0.17474605 0.051229400 -22.482058 42.444926 6544.8844 1.5329515e+10 0.17272766 0.052361790 -22.561793 42.345257 6547.1705 1.4077716e+10 0.17009191 0.053352188 -22.640953 42.245009 6549.4565 1.2976523e+10 0.16760744 0.054431514 -22.716712 42.141339 6551.7426 1.1972942e+10 0.16561405 0.055496410 -22.792472 42.037670 6554.0286 1.0996795e+10 0.16293348 0.054832981 -22.877109 41.928614 6556.3147 1.0033757e+10 0.16058692 0.053966857 -22.966814 41.816483 6558.6008 9.1102255e+09 0.15812361 0.052727373 -23.050837 41.707803 6560.8868 8.3148587e+09 0.15505820 0.051474715 -23.126585 41.604147 6563.1729 7.6545718e+09 0.15238527 0.049728366 -23.202334 41.500491 6565.4590 7.0933887e+09 0.14959087 0.047797245 -23.278083 41.396834 6567.7450 6.5946800e+09 0.14722790 0.045987254 -23.353832 41.293176 6570.0311 6.1370912e+09 0.14508524 0.044904634 -23.429585 41.191071 6572.3171 5.7288776e+09 0.14242513 0.044048536 -23.505345 41.091388 6574.6032 5.3385042e+09 0.13927173 0.042565287 -23.581104 40.991705 6576.8893 4.9354589e+09 0.13604734 0.040347828 -23.665212 40.877079 6579.1753 4.5400779e+09 0.13217436 0.036974111 -23.750432 40.760464 6581.4614 4.1598093e+09 0.12884672 0.035456893 -23.826863 40.654914 6583.7475 3.8391177e+09 0.12544328 0.034643339 -23.898624 40.555245 6586.0335 3.5693149e+09 0.12176313 0.033170863 -23.970386 40.454998 6588.3196 3.3199401e+09 0.11853906 0.033273207 -24.042148 40.351341 6590.6056 3.0965322e+09 0.11427831 0.029935483 -24.113911 40.247683 6592.8917 2.8894966e+09 0.11029533 0.027207412 -24.188210 40.146564 6595.1778 2.7149207e+09 0.10648285 0.025642006 -24.263960 40.046894 6597.4638 2.5485775e+09 0.10333751 0.025576361 -24.340349 39.945050 6599.7499 2.3666627e+09 0.10213033 0.024974832 -24.421095 39.828418 6602.0359 2.1899616e+09 0.10180266 0.027485955 -24.501841 39.711786 6604.3220 2.0173057e+09 0.10057549 0.026262476 -24.570927 39.610402 6606.6081 1.8733040e+09 0.099930789 0.026411275 -24.638703 39.510732 6608.8941 1.7496901e+09 0.096965770 0.023708730 -24.708036 39.411063 6611.1802 1.6433658e+09 0.093936083 0.024843543 -24.779798 39.311393 6613.4663 1.5460026e+09 0.092829549 0.023744662 -24.851561 39.211723 6615.7523 1.4453631e+09 0.091256375 0.023274678 -24.927282 39.097100 6618.0384 1.3422469e+09 0.090495815 0.023799780 -25.003530 38.980483 6620.3244 1.2400145e+09 0.089722131 0.024871750 -25.074247 38.874930 6622.6105 1.1540311e+09 0.088233028 0.024595496 -25.142023 38.775260 6624.8966 1.0781152e+09 0.086556421 0.025342239 -25.209800 38.675012 6627.1826 1.0151092e+09 0.084271093 0.025387358 -25.277584 38.571343 6629.4687 9.5612023e+08 0.082873739 0.026024364 -25.345368 38.467673 6631.7548 8.9748567e+08 0.080846911 0.026007434 -25.418541 38.358618 6634.0408 8.3721273e+08 0.079092132 0.026329820 -25.494790 38.246488 6636.3269 7.7861867e+08 0.077374854 0.026422812 -25.567589 38.137806 6638.6129 7.2218634e+08 0.076059593 0.025644938 -25.635364 38.034148 6640.8990 6.7980797e+08 0.076182824 0.025160658 -25.703139 37.930491 6643.1851 6.4028231e+08 0.075444663 0.025220561 -25.770914 37.830417 6645.4711 6.0303081e+08 0.074237684 0.025672390 -25.838689 37.730748 6647.7572 5.6938243e+08 0.073222656 0.026836444 -25.908022 37.626212 6650.0433 5.3094030e+08 0.072752159 0.026265138 -25.979787 37.514082 6652.3293 4.9484283e+08 0.072601507 0.027341128 -26.050268 37.403314 6654.6154 4.6421324e+08 0.072008078 0.027774070 -26.114065 37.299644 6656.9014 4.3652176e+08 0.070379332 0.028814604 -26.177862 37.195975 6659.1875 4.1116086e+08 0.069096477 0.031795486 -26.246861 37.086780 6661.4736 3.8727593e+08 0.067994300 0.032776145 -26.318624 36.974650 6663.7596 3.5891162e+08 0.066916739 0.032272703 -26.387011 36.866108 6666.0457 3.3653341e+08 0.067127507 0.026917497 -26.450800 36.762452 6668.3317 3.1603380e+08 0.066461722 0.027764347 -26.514589 36.658796 6670.6178 2.9308157e+08 0.066398224 0.027042411 -26.585675 36.547384 6672.9039 2.7505819e+08 0.066276412 0.027403499 -26.657439 36.435254 6675.1899 2.5619514e+08 0.064821026 0.030162149 -26.723734 36.331667 6677.4760 2.3949941e+08 0.063147537 0.031681541 -26.787523 36.231998 6679.7621 2.2837035e+08 0.063248602 0.029638041 -26.851930 36.129323 6682.0481 2.1204716e+08 0.064299113 0.030461308 -26.919208 36.012707 6684.3342 2.0153806e+08 0.064603414 0.032671050 -26.986486 35.896090 6686.6202 1.9047958e+08 0.063570408 0.034121951 -27.050465 35.795522 6688.9063 1.8053832e+08 0.060742134 0.033994396 -27.114262 35.695839 6691.1924 1.7172653e+08 0.059840946 0.032955877 -27.179590 35.590681 6693.4784 1.6123313e+08 0.059055658 0.031439958 -27.246868 35.478551 6695.7645 1.5215493e+08 0.058916828 0.029719046 -27.314146 35.366421 6698.0506 1.4109189e+08 0.058421191 0.030287207 -27.381425 35.254291 6700.3366 1.3144669e+08 0.057021439 0.030917395 -27.448704 35.142161 6702.6227 1.2509965e+08 0.056313349 0.033373941 -27.508650 35.038342 6704.9087 1.2247066e+08 0.056878926 0.036623792 -27.568451 34.934686 6707.1948 1.1940455e+08 0.056796664 0.040158921 -27.631785 34.827026 6709.4809 1.1344433e+08 0.056305798 0.040826691 -27.699064 34.714895 6711.7669 1.0332481e+08 0.054613790 0.041564783 -27.766342 34.602765 6714.0530 97143716. 0.052670429 0.047307392 -27.833620 34.490634 6716.3390 93418661. 0.051105668 0.048900748 -27.900745 34.378670 6718.6251 89969450. 0.048980120 0.050785977 -27.956568 34.278988 6720.9112 85373921. 0.049272740 0.050314191 -28.012391 34.179305 6723.1972 80826404. 0.048428005 0.049478945 -28.074003 34.071064 6725.4833 77428241. 0.044450258 0.041274128 -28.141281 33.954447 6727.7694 74582955. 0.043635260 0.039935380 -28.207321 33.839069 6730.0554 71664927. 0.042672321 0.040454891 -28.270114 33.726938 6732.3415 65491697. 0.041472636 0.043803075 -28.332907 33.614808 6734.6275 60718727. 0.041531860 0.049315842 -28.395700 33.502677 6736.9136 56614899. 0.043863662 0.053808951 -28.458493 33.390547 6739.1997 54956739. 0.045161605 0.063070908 -28.521286 33.278416 6741.4857 52862239. 0.044400637 0.067144024 -28.584080 33.166286 6743.7718 49501937. 0.044306299 0.076253933 -28.646873 33.054156 6746.0579 50102619. 0.039148033 0.078314651 -28.709665 32.942026 6748.3439 52247119. 0.028222062 0.068826258 -28.772458 32.829896