# # 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 = 42.987688 km # Date (UTC) = 2011-01-14T08:49:02.818 # Date (julian) = 2455575.86739373 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6506.6888 8.3065902e+10 0.079213222 0.034300208 116.02941 46.685719 6509.3664 7.1660616e+10 0.091407353 0.035107624 116.14570 46.543263 6512.0440 6.2269904e+10 0.10385411 0.035915041 116.27779 46.387161 6514.7216 5.4164851e+10 0.11656349 0.036722458 116.40166 46.236443 6517.3991 4.7112037e+10 0.12956220 0.037529874 116.51198 46.094602 6520.0767 4.1415635e+10 0.14297389 0.038337291 116.63262 45.946000 6522.7543 3.6389081e+10 0.15462984 0.039114773 116.76470 45.789895 6525.4319 3.2021589e+10 0.16091301 0.039732926 116.87919 45.645324 6528.1095 2.8335269e+10 0.16598997 0.041529314 116.98951 45.503485 6530.7870 2.5166104e+10 0.16951323 0.044930529 117.10866 45.348737 6533.4646 2.2356097e+10 0.17296285 0.047717033 117.22641 45.196047 6536.1422 1.9897392e+10 0.17316796 0.047917722 117.33673 45.054206 6538.8198 1.7770887e+10 0.17466273 0.049555865 117.45033 44.905559 6541.4973 1.5921861e+10 0.17460315 0.051165243 117.57041 44.743451 6544.1749 1.4268264e+10 0.17362425 0.051786250 117.68043 44.598436 6546.8525 1.2820748e+10 0.17256803 0.053165999 117.78551 44.461829 6549.5301 1.1548051e+10 0.17029398 0.054506476 117.90210 44.305663 6552.2077 1.0402625e+10 0.16702838 0.055534498 118.02066 44.146145 6554.8852 9.3897317e+09 0.16228215 0.054850957 118.12573 44.009558 6557.5628 8.4920891e+09 0.15706737 0.053513332 118.23257 43.867921 6560.2404 7.6942263e+09 0.15220406 0.052057561 118.34665 43.705813 6562.9180 6.9588171e+09 0.14810087 0.050006418 118.45313 43.557291 6565.5956 6.3110968e+09 0.14466598 0.047642139 118.55295 43.420702 6568.2731 5.8095225e+09 0.14204844 0.045520590 118.65276 43.280811 6570.9507 5.3759730e+09 0.13958000 0.044523693 118.75257 43.138970 6573.6283 4.9288386e+09 0.13695356 0.043153296 118.86273 42.982433 6576.3059 4.4940024e+09 0.13410937 0.041019335 118.97564 42.821850 6578.9834 4.0850207e+09 0.13074970 0.037096640 119.07021 42.685262 6581.6610 3.7420018e+09 0.12800619 0.035396442 119.16559 42.547853 6584.3386 3.4765392e+09 0.12510291 0.034331062 119.26540 42.406012 6587.0162 3.2257005e+09 0.12238143 0.033161954 119.36729 42.260569 6589.6938 2.9804499e+09 0.11951568 0.031669624 119.47537 42.104466 6592.3713 2.7560408e+09 0.11594726 0.027712845 119.57551 41.956736 6595.0489 2.5424751e+09 0.11237869 0.025628644 119.67007 41.814895 6597.7265 2.3426485e+09 0.10868221 0.025493473 119.77386 41.659202 6600.4041 2.1541117e+09 0.10688456 0.025820572 119.88160 41.497552 6603.0817 1.9761738e+09 0.10493862 0.026614937 119.97091 41.360966 6605.7592 1.8268850e+09 0.10304955 0.027301976 120.06082 41.223778 6608.4368 1.7054841e+09 0.099122223 0.023720822 120.15538 41.081937 6611.1144 1.5817127e+09 0.094321625 0.024885512 120.25152 40.937089 6613.7920 1.4567028e+09 0.092160109 0.023864164 120.35359 40.780984 6616.4695 1.3415731e+09 0.089969253 0.023355994 120.44870 40.632657 6619.1471 1.2364755e+09 0.089165327 0.024561412 120.53800 40.490817 6621.8247 1.1569798e+09 0.088397118 0.024816097 120.62395 40.352334 6624.5023 1.0835299e+09 0.086867118 0.025131176 120.70802 40.215727 6627.1799 1.0073651e+09 0.085207274 0.025386286 120.80538 40.060289 6629.8574 9.3436567e+08 0.084330522 0.025954078 120.90651 39.900042 6632.5350 8.5904773e+08 0.082869074 0.026096498 120.99582 39.763456 6635.2126 7.9723285e+08 0.081578411 0.026431669 121.08424 39.625980 6637.8902 7.4691230e+08 0.080395248 0.025725434 121.16829 39.484139 6640.5677 6.9759949e+08 0.080682708 0.025201187 121.25554 39.338507 6643.2453 6.5034019e+08 0.080561197 0.025229660 121.35160 39.182401 6645.9229 6.0015148e+08 0.079590983 0.025884031 121.44045 39.034858 6648.6005 5.5688523e+08 0.078550589 0.027366250 121.52451 38.893017 6651.2781 5.2205846e+08 0.078164669 0.026697260 121.60856 38.754837 6653.9556 4.8914833e+08 0.077662624 0.028013577 121.69261 38.618251 6656.6332 4.5970581e+08 0.075714382 0.028579190 121.78619 38.461423 6659.3108 4.3008677e+08 0.074092380 0.031769766 121.88006 38.302572 6661.9884 4.0440119e+08 0.072612343 0.033038351 121.95885 38.165984 6664.6660 3.8048672e+08 0.071677752 0.029769391 122.04018 38.023679 6667.3435 3.5266399e+08 0.071515626 0.027229643 122.13024 37.861572 6670.0211 3.2608062e+08 0.070964492 0.027318852 122.21694 37.713717 6672.6987 3.0307408e+08 0.070848449 0.027284572 122.30100 37.577129 6675.3763 2.8348685e+08 0.069201775 0.030519047 122.38161 37.437100 6678.0538 2.7019565e+08 0.067786713 0.030900599 122.46041 37.295259 6680.7314 2.5559424e+08 0.068673441 0.029599362 122.54767 37.142703 6683.4090 2.3962941e+08 0.069759601 0.031787979 122.63631 36.988276 6686.0866 2.2361191e+08 0.069494242 0.033811458 122.70986 36.851689 6688.7642 2.0894574e+08 0.066393007 0.033961584 122.78641 36.710449 6691.4417 1.9295124e+08 0.065237543 0.032897042 122.87648 36.548342 6694.1193 1.8237295e+08 0.064016813 0.031093798 122.95800 36.399421 6696.7969 1.7074151e+08 0.063534768 0.030006879 123.03155 36.262833 6699.4745 1.6238027e+08 0.061567344 0.031152629 123.11522 36.110597 6702.1521 1.5627665e+08 0.059067665 0.032998144 123.20528 35.948489 6704.8296 1.4664656e+08 0.058868016 0.036584945 123.27969 35.810566 6707.5072 1.3870134e+08 0.057675582 0.040114169 123.35370 35.673120 6710.1848 1.3010003e+08 0.055421651 0.040532664 123.43776 35.517014 6712.8624 1.2369907e+08 0.051801544 0.043431083 123.51784 35.366301 6715.5399 1.1830603e+08 0.048142468 0.047930827 123.59140 35.224441 6718.2175 1.1307916e+08 0.044231686 0.050151188 123.66995 35.075811 6720.8951 1.0530603e+08 0.042162059 0.050316053 123.75400 34.919707 6723.5727 99503718. 0.039034358 0.049688337 123.82955 34.779406 6726.2503 91482125. 0.032715026 0.040953625 123.90310 34.642820 6728.9278 85752967. 0.030107213 0.040943147 123.98073 34.488548 6731.6054 81908569. 0.026150407 0.042954911 124.05769 34.335875 6734.2830 79499172. 0.023465064 0.049336573 124.13124 34.194033 6736.9606 76798190. 0.023616513 0.053986501 124.20631 34.047385 6739.6381 71504063. 0.020790894 0.063607525 124.28436 33.891283 6742.3157 67126043. 0.013070860 0.069380081 124.35586 33.748285 6744.9933 62709097. -0.0019422278 0.078561709 124.42415 33.611699 6747.6709 61815559. -0.063051424 0.067130201 124.50455 33.460124 6750.3485 57294768. -0.018651419 0.072599146 124.58799 33.303405 6753.0260 50892569. 0.098773834 0.073061565 124.66604 33.141298