# # 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 = 44.872934 km # Date (UTC) = 2016-12-10T10:05:14.270 # Date (julian) = 2457732.92030405 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6510.9756 6.8575399e+10 0.10630074 0.035592866 105.69244 25.608777 6513.2381 6.0591168e+10 0.11735278 0.036275136 105.74345 25.501952 6515.5007 5.3963005e+10 0.12860698 0.036957407 105.79080 25.391469 6517.7633 4.8087400e+10 0.14003021 0.037639677 105.83815 25.280986 6520.0258 4.2986791e+10 0.15163885 0.038321947 105.89108 25.165456 6522.2884 3.8016363e+10 0.16251451 0.038992772 105.94878 25.045600 6524.5510 3.3488787e+10 0.16823577 0.039622694 106.00353 24.929546 6526.8135 2.9555386e+10 0.17271319 0.040520979 106.05089 24.822996 6529.0761 2.6319560e+10 0.17560647 0.042356998 106.09825 24.716446 6531.3387 2.3646086e+10 0.17838779 0.045721603 106.14560 24.606939 6533.6012 2.1255240e+10 0.18035301 0.047775089 106.19295 24.496455 6535.8638 1.9142545e+10 0.17964624 0.047849589 106.24030 24.386831 6538.1264 1.7298195e+10 0.18029967 0.049218208 106.28765 24.280293 6540.3889 1.5653765e+10 0.17956628 0.051037837 106.33500 24.173756 6542.6515 1.4189708e+10 0.17726565 0.051249577 106.38235 24.067220 6544.9140 1.2863540e+10 0.17524354 0.052385840 106.42970 23.960683 6547.1766 1.1691545e+10 0.17219173 0.053354527 106.47705 23.853558 6549.4392 1.0671115e+10 0.16848099 0.054413836 106.52440 23.743060 6551.7017 9.7779300e+09 0.16498779 0.055482073 106.57176 23.632563 6553.9643 8.9883869e+09 0.16104542 0.054850323 106.61911 23.524500 6556.2269 8.2900485e+09 0.15780542 0.053979771 106.66646 23.417963 6558.4894 7.6500247e+09 0.15506172 0.052822246 106.71381 23.311426 6560.7520 7.0641109e+09 0.15170776 0.051596285 106.76116 23.204888 6563.0146 6.5169856e+09 0.14876456 0.049911520 106.80851 23.098351 6565.2771 6.0302526e+09 0.14590450 0.048003714 106.85586 22.991814 6567.5397 5.5880784e+09 0.14347403 0.046160863 106.90321 22.885278 6569.8023 5.1770996e+09 0.14142437 0.044904639 106.95051 22.778742 6572.0648 4.7952137e+09 0.13932426 0.044193034 106.99392 22.672191 6574.3274 4.4449319e+09 0.13657297 0.042697763 107.03733 22.565640 6576.5900 4.1373393e+09 0.13395448 0.040692347 107.08262 22.459095 6578.8525 3.8618562e+09 0.13070409 0.037303393 107.12997 22.352558 6581.1151 3.6150369e+09 0.12779817 0.035561761 107.17732 22.246021 6583.3776 3.3963903e+09 0.12524376 0.034830520 107.22095 22.139484 6585.6402 3.1965802e+09 0.12236444 0.033458941 107.26436 22.032947 6587.9028 2.9898661e+09 0.11998348 0.033358389 107.31180 21.920961 6590.1653 2.7709542e+09 0.11711140 0.030754513 107.36507 21.801105 6592.4279 2.5554544e+09 0.11393843 0.027657902 107.41679 21.683331 6594.6905 2.3633411e+09 0.11076873 0.025793490 107.46020 21.576780 6596.9530 2.2057664e+09 0.10722564 0.025722941 107.50361 21.470229 6599.2156 2.0693007e+09 0.10449164 0.024942697 107.54701 21.363686 6601.4782 1.9440952e+09 0.10348168 0.027270877 107.59042 21.257149 6603.7407 1.8307857e+09 0.10147635 0.026224766 107.63382 21.150612 6606.0033 1.7174084e+09 0.10084147 0.027498051 107.67723 21.044075 6608.2659 1.6177560e+09 0.098525188 0.023725342 107.72063 20.937538 6610.5284 1.5182372e+09 0.095682757 0.024507871 107.76622 20.831001 6612.7910 1.4297243e+09 0.094378168 0.023729759 107.81357 20.724465 6615.0535 1.3495886e+09 0.093412812 0.023253179 107.86085 20.617928 6617.3161 1.2703214e+09 0.092354392 0.023544055 107.90425 20.511377 6619.5787 1.1985206e+09 0.091893503 0.024665540 107.94766 20.404826 6621.8412 1.1324822e+09 0.090942401 0.024810613 107.99371 20.291816 6624.1038 1.0590824e+09 0.089250114 0.024917877 108.04254 20.171959 6626.3664 9.9165731e+08 0.088055849 0.026124113 108.08919 20.056122 6628.6289 9.2456339e+08 0.086723325 0.025958449 108.12864 19.953531 6630.8915 8.6870730e+08 0.085129778 0.025930499 108.16810 19.850939 6633.1541 8.2526341e+08 0.083764013 0.026179151 108.21031 19.745593 6635.4166 7.7645483e+08 0.082254006 0.026462267 108.25372 19.639056 6637.6792 7.3438287e+08 0.080960252 0.025828763 108.29712 19.532519 6639.9418 6.9679220e+08 0.080642408 0.025291469 108.34053 19.425982 6642.2043 6.5941150e+08 0.080650412 0.025160057 108.38393 19.319445 6644.4669 6.2565241e+08 0.079507402 0.025394067 108.43076 19.204509 6646.7295 5.9090893e+08 0.078285431 0.026297735 108.47960 19.084635 6648.9920 5.5169003e+08 0.076956631 0.027628343 108.52489 18.971284 6651.2546 5.2139689e+08 0.076522372 0.026679265 108.56435 18.868693 6653.5171 4.9241023e+08 0.076006867 0.027789698 108.60381 18.766102 6655.7797 4.6982790e+08 0.074446855 0.027932394 108.64659 18.660184 6658.0423 4.5531457e+08 0.073075693 0.030136054 108.69000 18.553647 6660.3048 4.3360390e+08 0.071852574 0.031903082 108.73508 18.444369 6662.5674 4.0852893e+08 0.070755199 0.032725924 108.78391 18.328951 6664.8300 3.8538815e+08 0.070235384 0.029169269 108.83221 18.214031 6667.0925 3.6208831e+08 0.070158166 0.027137447 108.87167 18.107495 6669.3551 3.4530973e+08 0.069301248 0.027990993 108.91113 18.000959 6671.6177 3.2950955e+08 0.069475520 0.026874151 108.95059 17.896473 6673.8802 3.1511274e+08 0.068909188 0.028775661 108.99005 17.793869 6676.1428 3.0111630e+08 0.066751152 0.031805752 109.02951 17.691264 6678.4054 2.8573770e+08 0.065928246 0.030665495 109.07823 17.571621 6680.6679 2.6573917e+08 0.066768223 0.029585648 109.12706 17.451764 6682.9305 2.4569489e+08 0.067695195 0.031135469 109.16900 17.344598 6685.1930 2.3240475e+08 0.067630776 0.032908745 109.20846 17.242007 6687.4556 2.2329942e+08 0.065713054 0.034088800 109.24890 17.135952 6689.7182 2.1889888e+08 0.063376963 0.033369548 109.29330 17.016095 6691.9807 2.0972515e+08 0.062389507 0.032769872 109.33769 16.896238 6694.2433 2.0149846e+08 0.061566454 0.030920019 109.38114 16.792748 6696.5059 1.9262354e+08 0.061390257 0.029885965 109.42455 16.690157 6698.7684 1.8524712e+08 0.060254933 0.031272585 109.46836 16.582254 6701.0310 1.7808652e+08 0.058414852 0.031454934 109.51276 16.466821 6703.2936 1.6865918e+08 0.058302949 0.034409830 109.55637 16.352822 6705.5561 1.6370301e+08 0.058496940 0.037657293 109.59582 16.246286 6707.8187 1.5813176e+08 0.058323253 0.040069549 109.63528 16.139749 6710.0813 1.4713776e+08 0.057416439 0.040512400 109.67783 16.027644 6712.3438 1.3437627e+08 0.055496091 0.042468325 109.72222 15.912227 6714.6064 1.1992077e+08 0.053695374 0.047348997 109.76661 15.796810 6716.8690 1.0865829e+08 0.051959761 0.049681248 109.81100 15.681393 6719.1315 1.0477211e+08 0.049828301 0.051244887 109.85479 15.567534 6721.3941 1.0026480e+08 0.050439953 0.050422638 109.89425 15.464943 6723.6566 94600357. 0.049033125 0.049735167 109.93371 15.362352 6725.9192 90221407. 0.045164673 0.041001832 109.97606 15.252230 6728.1818 86270124. 0.044603168 0.039885735 110.02046 15.136814 6730.4443 84077070. 0.043261436 0.040988147 110.06485 15.021397 6732.7069 82596160. 0.042005721 0.043870348 110.10924 14.905980 6734.9695 79314042. 0.042166719 0.049295269 110.15291 14.791610 6737.2320 77693884. 0.044058673 0.054874714 110.18842 14.689005 6739.4946 77871725. 0.044592754 0.063431846 110.22394 14.586401 6741.7572 76866381. 0.042858704 0.067918164 110.26431 14.474346 6744.0197 68257022. 0.038284763 0.077808671 110.30870 14.354491 6746.2823 64112105. 0.036381557 0.075705318 110.35310 14.235945 6748.5449 60998829. 0.033702477 0.069883408 110.39749 14.120528 6750.8074 63156916. 0.030982278 0.073382835 110.44169 14.005299 6753.0700 66206777. 0.028279371 0.073203776 110.48165 13.894322 6755.3326 62481323. 0.026473010 0.074459543 110.52160 13.783344 6757.5951 56213693. 0.025095120 0.074934042 110.56505 13.668860 6759.8577 48267059. 0.026666759 0.076026927 110.60944 13.553443 6762.1202 41143925. 0.030962835 0.077856881 110.65383 13.438026 6764.3828 35017964. 0.034520090 0.079501625 110.69823 13.322609 6766.6454 37222918. 0.034813792 0.081173592 110.74136 13.207192 6773.4331 42018323. 0.021237974 0.095206396 110.86580 12.860924