. Vaughan, The following CALIPSO data products were used in this study: the V3.01 CALIPSO IIR level 2 track product, 2017.

. Vaughan, ); the V3.30 CALIPSO IIR level 2 track product, 2017.

. Vaughan, the V2.00 CALIPSO IIR level 1 product, 2017.

. Vaughan, ); the V3.01 CALIPSO CALIOP 1/3 km cloud layer product, NASA Langley Research Center Atmospheric Science Data Center, 2017.

. Vaughan, CALIPSO CALIOP 1/3 km cloud layer product, 2017.

. Vaughan, ); the V3.30 CALIPSO CALIOP 5 km cloud layer product, CALIPSO CALIOP 5 km cloud layer product, 2017.

. Vaughan, , 2017.

. Vaughan, ); the V3.30 CALIPSO CALIOP 5 km cloud profile product, 2017.

S. A. Ackerman, W. L. Smith, A. D. Collard, X. L. Ma, H. E. Revercomb et al., Cirrus cloud properties derived from high spectral resolution infrared spectrometry during FIRE II, Part II: Aircraft HIS results, J. Atmos. Sci, vol.52, pp.4246-4263, 1995.

B. A. Baker and R. P. Lawson, Improvement in Determination of Ice Water Content from Two-Dimensional Particle Imagery. Part I: Image-to-Mass Relationships, Journal of Applied Meteorology and Climatology, vol.45, issue.9, pp.1282-1290, 2006.

B. A. Baker and R. P. Lawson, In Situ Observations of the Microphysical Properties of Wave, Cirrus, and Anvil Clouds. Part I: Wave Clouds, Journal of the Atmospheric Sciences, vol.63, issue.12, pp.3160-3185, 2006.

D. Barahona and A. Nenes, Parameterization of cirrus cloud formation in large-scale models: Homogeneous nucleation, Journal of Geophysical Research, vol.113, issue.D11, p.11211, 2008.

E. A. Barnes and J. A. Screen, The impact of Arctic warming on the midlatitude jet-stream: Can it? Has it? Will it? WIREs, Clim. Change, vol.6, pp.277-286, 2015.

T. Chen, W. Rossow, and Y. Zhang, Radiative effects of cloudtype variations, J. Climate, vol.13, pp.264-286, 2000.

J. Cohen, J. A. Screen, J. C. Furtado, M. Barlow, D. Whittleston et al., Recent Arctic amplification and extreme mid-latitude weather, Nature Geoscience, vol.7, issue.9, pp.627-637, 2014.

S. J. Cooper, T. S. L'ecuyer, and G. L. Stephens, The impact of explicit cloud boundary information on ice cloud microphysical property retrievals from infrared radiances, Journal of Geophysical Research: Atmospheres, vol.108, issue.D3, pp.n/a-n/a, 2003.

R. J. Cotton, P. R. Field, Z. Ulanowski, P. H. Kaye, E. Hirst et al., The effective density of small ice particles obtained fromin situaircraft observations of mid-latitude cirrus, Quarterly Journal of the Royal Meteorological Society, vol.139, issue.676, pp.1923-1934, 2012.

J. Delanoë and R. J. Hogan, A variational scheme for retrieving ice cloud properties from combined radar, lidar, and infrared radiometer, J. Geophys. Res, vol.113, 2008.

J. Delanoë and R. J. Hogan, A variational scheme for retrieving ice cloud properties from combined radar, lidar, and infrared radiometer, Journal of Geophysical Research, vol.113, issue.D7, 2008.

J. Delanoë and R. J. Hogan, Combined CloudSat-CALIPSO-MODIS retrievals of the properties of ice clouds, Journal of Geophysical Research, vol.115, p.10201, 2010.

M. Deng, G. G. Mace, Z. Wang, and H. Okamoto, Tropical Composition, Cloud and Climate Coupling Experiment validation for cirrus cloud profiling retrieval using CloudSat radar and CALIPSO lidar, J. Geophys. Res, vol.115, 2010.

M. Diao, J. B. Jensen, L. L. Pan, C. R. Homeyer, S. Honomichl et al., Distributions of ice supersaturation and ice crystals from airborne observations in relation to upper tropospheric dynamical boundaries, Journal of Geophysical Research: Atmospheres, vol.120, issue.10, pp.5101-5121, 2015.

P. Dubuisson, V. Giraud, O. Chomette, H. Chepfer, and J. Pelon, Fast radiative transfer modeling for infrared imaging radiometry, J. Quant. Spectrosc. Ra, vol.95, pp.201-220, 2005.
URL : https://hal.archives-ouvertes.fr/hal-00078640

D. L. Mitchell, A. Garnier, J. Pelon, and E. Erfani, CALIPSO (IIR-CALIOP) Retrievals of Cirrus Cloud Ice Particle Concentrations, 2018.
URL : https://hal.archives-ouvertes.fr/insu-01818499

P. Dubuisson, V. Giraud, J. Pelon, B. Cadet, and P. Yang, Sensitivity of Thermal Infrared Radiation at the Top of the Atmosphere and the Surface to Ice Cloud Microphysics, Journal of Applied Meteorology and Climatology, vol.47, issue.10, pp.2545-2560, 2008.
URL : https://hal.archives-ouvertes.fr/hal-00335248

A. Dufour, O. Zolina, and S. K. Gulev, Atmospheric Moisture Transport to the Arctic: Assessment of Reanalyses and Analysis of Transport Components, Journal of Climate, vol.29, issue.14, pp.5061-5081, 2016.
URL : https://hal.archives-ouvertes.fr/insu-01388439

S. Eliasson, S. A. Buehler, M. Milz, P. Eriksson, J. et al., Assessing observed and modelled spatial distributions of ice water path using satellite data, Atmos. Chem. Phys, vol.11, pp.375-391, 2011.

E. Erfani and D. L. Mitchell, Developing and bounding ice particle mass- and area-dimension expressions for use in atmospheric models and remote sensing, Atmospheric Chemistry and Physics, vol.16, issue.7, pp.4379-4400, 2016.

J. A. Francis and S. J. Vavrus, Evidence linking Arctic amplification to extreme weather in mid-latitudes, Geophysical Research Letters, vol.39, issue.6, pp.n/a-n/a, 2012.

Q. Fu, An accurate parameterization of the solar radiative properties of cirrus clouds for climate models, J. Climate, vol.9, pp.2058-2082, 1996.

Q. Fu, A New Parameterization of an Asymmetry Factor of Cirrus Clouds for Climate Models, Journal of the Atmospheric Sciences, vol.64, issue.11, pp.4140-4150, 2007.

A. Garnier, J. Pelon, P. Dubuisson, M. Faivre, O. Chomette et al., Retrieval of Cloud Properties Using CALIPSO Imaging Infrared Radiometer. Part I: Effective Emissivity and Optical Depth, Journal of Applied Meteorology and Climatology, vol.51, issue.7, pp.1407-1425, 2012.
URL : https://hal.archives-ouvertes.fr/hal-00680921

A. Garnier, J. Pelon, P. Dubuisson, P. Yang, M. Faivre et al., Retrieval of Cloud Properties Using CALIPSO Imaging Infrared Radiometer. Part II: Effective Diameter and Ice Water Path, Journal of Applied Meteorology and Climatology, vol.52, issue.11, pp.2582-2599, 2013.
URL : https://hal.archives-ouvertes.fr/hal-00680921

A. Garnier, J. Pelon, M. A. Vaughan, D. M. Winker, C. R. Trepte et al., Lidar multiple scattering factors inferred from CALIPSO lidar and IIR retrievals of semi-transparent cirrus cloud optical depths over oceans, Atmospheric Measurement Techniques, vol.8, issue.7, pp.2759-2774, 2015.
URL : https://hal.archives-ouvertes.fr/hal-01120207

L. Goldfarb, P. Keckhut, M. Chanin, and A. Hauchecorne, Cirrus Climatological Results from Lidar Measurements at OHP (44 ? N, 6 ? E), Geophys. Res. Lett, vol.28, pp.1687-1690, 2001.
URL : https://hal.archives-ouvertes.fr/hal-01633087

E. Gryspeerdt, O. Sourdeval, J. Quaas, J. Delanoë, M. Krämer et al., Ice crystal number concentration estimates from lidar?radar satellite remote sensing ? Part 2: Controls on the ice crystal number concentration, Atmospheric Chemistry and Physics, vol.18, issue.19, pp.14351-14370, 2018.
URL : https://hal.archives-ouvertes.fr/insu-01756056

L. G. Guimaraes and H. M. Nussenzveig, Theory of Mie resonances and the ripple fluctuations, Opt. Commun, vol.89, pp.363-369, 1992.

C. Gurganus and P. P. Lawson, Laboratory and Flight Tests of 2D Imaging Probes: Toward a Better Understanding of Instrument Performance and the Impact on Archived Data, Journal of Atmospheric and Oceanic Technology, vol.35, issue.7, pp.1533-1553, 2018.

W. Haag, B. Kärcher, J. Ström, A. Minikin, U. Lohmann et al., Freezing thresholds and cirrus cloud formation mechanisms inferred from in situ measurements of relative humidity, Atmos. Chem. Phys, vol.3, pp.1791-1806, 2003.
URL : https://hal.archives-ouvertes.fr/hal-00328353

A. Heidinger and M. J. Pavolonis, Gazing at cirrus clouds for 25 years through a split window, Part I: Methodology, J. Appl. Meteorol. Climatol, vol.48, pp.1100-1116, 2009.

P. H. Herzegh and P. V. Hobbs, Size spectra of ice particles in frontal clouds: Correlations between spectrum shape and cloud conditions, Quarterly Journal of the Royal Meteorological Society, vol.111, issue.468, pp.463-477, 2007.

A. Heymsfield, D. Winker, M. Avery, M. Vaughan, G. Diskin et al., Relationships between Ice Water Content and Volume Extinction Coefficient from In Situ Observations for Temperatures from 0° to ?86°C: Implications for Spaceborne Lidar Retrievals*, Journal of Applied Meteorology and Climatology, vol.53, issue.2, pp.479-505, 2014.

L. Hoffmann, A. W. Grimsdell, A. , and M. J. , Stratospheric gravity waves at Southern Hemisphere orographic hotspots: 2003-2014 AIRS/Aqua observations, Atmos. Chem. Phys, vol.16, pp.9381-9397, 2016.

Y. Hong and G. Liu, The characteristics of ice cloud properties derived from CloudSat and CALIPSO measurements, J. Climate, vol.28, pp.3880-3900, 2015.

F. Immler and O. Schrems, Determination of tropical cirrus properties by simultaneous LIDAR and radiosonde measurements, Geophysical Research Letters, vol.29, issue.23, p.5-1-5-4, 2002.

T. Inoue, On the temperature and emissivity determination of semitransparent cirrus clouds by bispectral measurements in the 10 µm window region, J. Meteorol. Soc. Jpn, vol.63, pp.88-98, 1985.

E. J. Jensen, R. P. Lawson, J. W. Bergman, L. Pfister, T. P. Bui et al., Physical processes controlling ice concentrations in synoptically forced, midlatitude cirrus, Journal of Geophysical Research: Atmospheres, vol.118, issue.11, pp.5348-5360, 2013.

E. J. Jensen, G. Diskin, R. P. Lawson, S. Lance, T. P. Bui et al., Ice nucleation and dehydration in the Tropical Tropopause Layer, Proceedings of the National Academy of Sciences, vol.110, issue.6, pp.2041-2046, 2013.

J. Jiang, D. L. Wu, and S. D. Eckermann, Upper Atmospheric Research Satellite (UARS) MLS observation of mountain waves over the Andes, J. Geophys. Res, vol.107, 2002.

E. Johansson, A. Devasthale, M. Tjernström, A. M. Ekman, and T. Ecuyer, Response of the lower troposphere to moisture intrusions into the Arctic, Geophys. Res. Lett, vol.44, pp.2527-2536, 2017.

E. Kienast-sjögren, C. Rolf, P. Seifert, U. K. Krieger, B. P. Luo et al., Climatological and radiative properties of midlatitude cirrus clouds derived by automatic evaluation of lidar measurements, Atmospheric Chemistry and Physics, vol.16, issue.12, pp.7605-7621, 2016.

A. V. Korolev, E. F. Emery, W. Strapp, S. G. Cober, G. A. Isaac et al., Small ice particles in tropospheric clouds: Fact or artifact, B. Am. Meteor. Soc, pp.967-973, 2011.

M. Krämer, C. Schiller, A. Afchine, R. Bauer, I. Gensch et al., Ice supersaturations and cirrus cloud crystal numbers, Atmos. Chem. Phys, vol.9, pp.3505-3522, 2009.

R. P. Lawson, Effects of ice particles shattering on the 2D-S probe, Atmos. Meas. Tech, vol.4, pp.1361-1381, 1361.

R. P. Lawson, D. O'connor, P. Zmarzly, K. Weaver, B. A. Baker et al., Effects of ice particles shattering on the 2D-S probe, Atmospheric Measurement Techniques, vol.4, issue.7, pp.1361-1381, 2011.

R. P. Lawson, B. Baker, B. Pilson, and Q. Mo, In Situ Observations of the Microphysical Properties of Wave, Cirrus, and Anvil Clouds. Part II: Cirrus Clouds, Journal of the Atmospheric Sciences, vol.63, issue.12, pp.3186-3203, 2006.

R. P. Lawson, B. Pilson, B. Baker, Q. Mo, E. Jensen et al., Aircraft measurements of microphysical properties of subvisible cirrus in the tropical tropopause layer, Atmospheric Chemistry and Physics, vol.8, issue.6, pp.1609-1620, 2008.
URL : https://hal.archives-ouvertes.fr/hal-00296493

A. E. Luebke, A. Afchine, A. Costa, J. Grooß, J. Meyer et al., The origin of midlatitude ice clouds and the resulting influence on their microphysical properties, Atmos. Chem. Phys, vol.16, pp.5793-5809, 2016.

S. Mishra, D. L. Mitchell, and D. Deslover, Ground based retrievals of small ice crystals and water phase in Arctic cirrus, AIP Conference Proceedings 1100, Current Problems in Atmospheric Radiation (IRS 2008), pp.482-485, 2008.

S. Mishra, D. L. Mitchell, D. D. Turner, and R. P. Lawson, Parameterization of ice fall speeds in midlatitude cirrus: Results from SPartICus, Journal of Geophysical Research: Atmospheres, vol.119, issue.7, pp.3857-3876, 2014.

D. L. Mitchell, Parameterization of the Mie extinction and absorption coefficients for water clouds, J. Atmos. Sci, vol.57, pp.1311-1326, 2000.

D. L. Mitchell, Effective diameter in radiation transfer: general definition, applications, and limitations, J. Atmos. Sci, vol.59, pp.2330-2346, 2002.

D. L. Mitchell and R. P. Entremont, Effective Diameter in Radiation Transfer: General Definition, Applications, and Limitations, Journal of the Atmospheric Sciences, vol.59, issue.15, pp.2330-2346, 2002.

D. L. Mitchell and R. P. D'entremont, Satellite retrieval of the liquid water fraction in tropical clouds between ?20 and ?38 °C, Atmospheric Measurement Techniques, vol.5, issue.7, pp.1683-1698, 2012.

D. L. Mitchell, S. K. Chai, Y. Liu, A. J. Heymsfield, and Y. Dong, Modeling Cirrus Clouds. Part I: Treatment of Bimodal Size Spectra and Case Study Analysis, Journal of the Atmospheric Sciences, vol.53, issue.20, pp.2952-2966, 1996.

D. L. Mitchell, W. P. Arnott, C. Schmitt, A. J. Baran, S. Havemann et al., Photon tunneling contributions to extinction for laboratory grown hexagonal columns, Journal of Quantitative Spectroscopy and Radiative Transfer, vol.70, issue.4-6, pp.761-776, 2001.

D. L. Mitchell, A. J. Baran, W. P. Arnott, and C. Schmitt, Testing and Comparing the Modified Anomalous Diffraction Approximation, Journal of the Atmospheric Sciences, vol.63, issue.11, pp.2948-2962, 2006.

D. L. Mitchell, R. P. D?entremont, and R. P. Lawson, Inferring Cirrus Size Distributions through Satellite Remote Sensing and Microphysical Databases, Journal of the Atmospheric Sciences, vol.67, issue.4, pp.1106-1125, 2010.

D. L. Mitchell, R. P. Lawson, and B. Baker, Understanding effective diameter and its application to terrestrial radiation in ice clouds, Atmospheric Chemistry and Physics, vol.11, issue.7, pp.3417-3429, 2011.

D. L. Mitchell, S. Mishra, and R. P. Lawson, Representing the ice fall speed in climate models: Results from Tropical Composition, Cloud and Climate Coupling (TC4) and the Indirect and Semi-Direct Aerosol Campaign (ISDAC), Journal of Geophysical Research, vol.116, 2011.

H. Moosmüller and C. M. Sorensen, Single scattering albedo of homogeneous, spherical particles in the transition regime, J. Quant. Spectrosc. Ra, vol.219, pp.333-338, 2018.

A. Muhlbauer, T. P. Ackerman, J. M. Comstock, G. S. Diskin, S. M. Evans et al., Impact of large-scale dynamics on the microphysical properties of midlatitude cirrus, J. Geophys. Res.-Atmos, vol.119, pp.3976-3996, 2014.

H. Nazaryan, M. P. Mccormick, and W. P. Menzel, Global characterization of cirrus clouds using CALIPSO data, The theory of the rainbow, vol.113, pp.116-127, 1977.

H. M. Nussenzveig and W. J. Wiscombe, Diffraction as tunneling, Physical Review Letters, vol.59, issue.15, pp.1667-1670, 1987.

D. L. Mitchell, A. Garnier, J. Pelon, and E. Erfani, CALIPSO (IIR-CALIOP) Retrievals of Cirrus Cloud Ice Particle Concentrations, 2018.
URL : https://hal.archives-ouvertes.fr/insu-01818499

F. Parol, J. C. Buriez, G. Brogniez, and Y. Fouquart, Information Content of AVHRR Channels 4 and 5 with Respect to the Effective Radius of Cirrus Cloud Particles, Journal of Applied Meteorology, vol.30, issue.7, pp.973-984, 1991.

M. J. Pavolonis, Advances in Extracting Cloud Composition Information from Spaceborne Infrared Radiances?A Robust Alternative to Brightness Temperatures. Part I: Theory, Journal of Applied Meteorology and Climatology, vol.49, issue.9, pp.1992-2012, 2010.

C. Schiller, M. Krämer, A. Afchine, N. Spelten, and N. Sitnikov, Ice water content of Arctic, midlatitude, and tropical cirrus, Journal of Geophysical Research, vol.113, issue.D24, p.24208, 2008.

J. A. Screen, C. Deser, and I. Simmonds, Local and remote controls on observed Arctic warming, Geophys. Res. Lett, vol.39, p.10709, 2012.

O. Sourdeval, L. C. Labonnote, A. J. Baran, J. Mülmenstädt, and G. Brogniez, A Methodology for Simultaneous Retrieval of Ice and Liquid Water Cloud Properties, Part II: Near-global Retrievals and Evaluation against A-Train Products, Q. J. Roy. Meteorol. Soc, vol.142, pp.3063-3081, 2016.

O. Sourdeval, E. Gryspeerdt, M. Krämer, T. Goren, J. Delanoë et al., Ice crystal number concentration estimates from lidar?radar satellite remote sensing ? Part 1: Method and evaluation, Atmospheric Chemistry and Physics, vol.18, issue.19, pp.14327-14350, 2018.
URL : https://hal.archives-ouvertes.fr/hal-01957592

P. Spichtinger and K. M. Gierens, Modelling of cirrus clouds ? Part 1a: Model description and validation, Atmospheric Chemistry and Physics, vol.9, issue.2, pp.685-706, 2009.

P. Spichtinger and K. M. Gierens, Modelling of cirrus clouds ? Part 1b: Structuring cirrus clouds by dynamics, Atmospheric Chemistry and Physics, vol.9, issue.2, pp.707-719, 2009.

T. Storelvmo and N. Herger, Cirrus cloud susceptibility to the injection of ice nuclei in the upper troposphere, J. Geophys. Res.-Atmos, vol.119, pp.2375-2389, 2014.

T. Storelvmo and N. Herger, Cirrus cloud susceptibility to the injection of ice nuclei in the upper troposphere, Journal of Geophysical Research: Atmospheres, vol.119, issue.5, pp.2375-2389, 2014.

C. J. Stubenrauch, W. B. Rossow, S. Kinne, S. Ackerman, G. Cesana et al., Assessment of Global Cloud Datasets from Satellites: Project and Database Initiated by the GEWEX Radiation Panel, Bulletin of the American Meteorological Society, vol.94, issue.7, pp.1031-1049, 2013.
URL : https://hal.archives-ouvertes.fr/hal-01091218

O. B. Toon, D. O. Starr, E. J. Jensen, P. A. Newman, S. Platnick et al., Planning, implementation, and first results of the Tropical Composition, Cloud and Climate Coupling Experiment (TC4), Journal of Geophysical Research, vol.115, 2010.

M. Vaughan, M. Pitts, C. Trepte, D. Winker, P. Detweiler et al., CALIPSO data management system data products catalog, document No. PC-SCI-503, 2017.

J. Vergara-temprado, A. K. Miltenberger, K. Furtado, D. P. Grosvenor, B. J. Shipway et al., Large-scale circulation associated with moisture intrusions into the Arctic during winter, P. Natl. Acad. Sci. USA, vol.115, pp.4717-4721, 2013.

C. Woods, R. Caballero, and G. Svensson, Large-scale circulation associated with moisture intrusions into the Arctic during winter, Geophysical Research Letters, vol.40, issue.17, pp.4717-4721, 2013.

P. Yang, H. Wei, H. L. Huang, B. A. Baum, Y. X. Hu et al., Scattering and absorption property database for non-spherical ice particles in the nearthrough far-infrared spectral region, Appl. Opt, vol.44, pp.5512-5523, 2005.

B. Zhao, K. Liou, Y. Gu, J. H. Jiang, Q. Li et al., Impact of aerosols on ice crystal size, Atmospheric Chemistry and Physics, vol.18, issue.2, pp.1065-1078, 2018.