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Volume 30 Issue 4

Jul.  2013

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Article >  ADVANCES IN ATMOSPHERIC SCIENCES  > 2013 >  30(4): 1053-1069

The Influence of Freezing Drizzle on Wire Icing during Freezing Fog Events

  • 1.

    Jiangsu Key Laboratory of Atmospheric Environmental Monitoring and Pollution Control, School of Atmospheric Physics, Nanjing University of Information Science and Technology, Nanjing 210044;

  • 2.

    Hubei Key Laboratory for Heavy Rain Monitoring and Warning Research, Institute of Heavy Rain, China Meteorological Administration, Wuhan 430074

Fund Project:

doi: 10.1007/s00376-012-2030-y

  • Both direct and indirect effects of freezing drizzle on ice accretion were analyzed for ten freezing drizzle events during a comprehensive ice thickness, fog, and precipitation observation campaign carried out during the winter of 2008 and 2009 at Enshi Radar Station (3017'N, 10916'E), Hubei Province, China. The growth rate of ice thickness was 0.85 mm h－1 during the freezing drizzle period, while the rate was only 0.4 mm h－1 without sleet and freezing drizzle. The rain intensity, liquid water content (LWC), and diameter of freezing drizzle stayed at low values. The development of microphysical properties of fog was suppressed in the freezing drizzle period. A threshold diameter (Dc) was proposed to estimate the inuence of freezing drizzle on different size ranges of fog droplets. Fog droplets with a diameter less thanDc would be affected slightly by freezing drizzle, while larger fog droplets would be affected signicantly. Dc had a correlation with the average rain intensity, with a correlation coefficient of 0.78. The relationships among the microphysical properties of fog droplets were all positive when the effect of freezing drizzle was weak, while they became poor positive correlations, or even negative correlations during freezing drizzle period. The direct contribution of freezing drizzle to ice thickness was about 14.5%. Considering both the direct and indirect effects, we suggest that freezing drizzle could act as a catalyst causing serious icing conditions.
    摘要: Both direct and indirect effects of freezing drizzle on ice accretion were analyzed for ten freezing drizzle events during a comprehensive ice thickness, fog, and precipitation observation campaign carried out during the winter of 2008 and 2009 at Enshi Radar Station (3017'N, 10916'E), Hubei Province, China. The growth rate of ice thickness was 0.85 mm h-1 during the freezing drizzle period, while the rate was only 0.4 mm h-1without sleet and freezing drizzle. The rain intensity, liquid water content (LWC), and diameter of freezing drizzle stayed at low values. The development of microphysical properties of fog was suppressed in the freezing drizzle period. A threshold diameter (Dc) was proposed to estimate the inuence of freezing drizzle on different size ranges of fog droplets. Fog droplets with a diameter less thanDc would be affected slightly by freezing drizzle, while larger fog droplets would be affected signicantly. Dc had a correlation with the average rain intensity, with a correlation coefficient of 0.78. The relationships among the microphysical properties of fog droplets were all positive when the effect of freezing drizzle was weak, while they became poor positive correlations, or even negative correlations during freezing drizzle period. The direct contribution of freezing drizzle to ice thickness was about 14.5%. Considering both the direct and indirect effects, we suggest that freezing drizzle could act as a catalyst causing serious icing conditions.
  • Ahti, K., and L. Makkonen, 1982: Observation on rime formation in relation to routinely measured meteoro-logical parameters. Geophysica, 19(1), 75-85.

    Ashenden, R., and J. D. Marwitz, 1997: Turboprop air-craft performance response to various environmental conditions.J. Aircr., 34(3), 278-287.

    Battaglia, A., E. Rustemeier, A. Tokay, U. Blahak, and C. Simmer, 2010: PARSIVEL snow observations: A critical assessment.J. Atmos. Oceanic Technol., 27(2), 333-344.

    Bernstein, B. C., 2000: Regional and local influences on freezing drizzle, freezing rain, and ice pellet events. Wea. Forecasting, 15(5), 485-508.

    Bernstein, B. C., T. A. Omeron, M. K. Politovich, and F. McDonough, 1998: Surface weather features associ-ated with freezing precipitation and severe in-flight aircraft icing.Atmospheric Research, 46(1-2), 57-73.

    Bourgouin, P., 2000: A method to determine precipita-tion types. Wea. Forecasting, 15(5), 583-592.

    Chen, B. J., W. Hu, and J. P. Pu, 2011: Characteristics of the raindrop size distribution for freezing precipi-tation observed in southern China.J. Geophys. Res., 116, D06201, doi: 10.1029/2010JD015305.

    Cober, S. G., G. A. Isaac, and J. W. Strapp, 2001: Characterizations of aircraft icing environments that include supercooled large drops. J. Appl. Meteor., 40(11), 1984-2002.

    Czys, R. R., R. W. Scott, K. C. Tang, R. W. Przybylinski, and M. E. Sabones, 1996: A physically based, nondi-mensional parameter for discriminating between lo-cations of freezing rain and ice pellets. Wea. Fore-casting, 11, 591-598.

    Degaetano, A. T., B. N. Belcher, and P. L. Spier, 2008: Short-term ice accretion forecasts for electric utilities using the weather research and forecasting model and a modiˉed precipitation-type algorithm.Wea. Fore-casting, 23(5), 838-853.

    Deng, X. J., D. Wu, and Y. X. Ye, 2002: Physical char-acteristics of dense fog at Nanling Mountain region. Journal of Tropical Meteorology, 18(3), 227-236. (in Chinese)

    Drage, M. A., and G. Hauge, 2008: Atmospheric icing in a coastal mountainous terrain: measurements and nu-merical simulations, a case study.Cold Regions Sci-ence and Technology, 53(2), 150-161.

    Falkovich, G., A. Fouxon, and M. G. Stepanov, 2002: Ac-celeration of rain initiation by cloud turbulence.Na-ture, 419, 151-154.

    Fan, S. X., H. L. Huang, K. H. Gu, H. S. Li, B. Zhu, H. L. Zhang, and Y. Fan, 2010: Effect of fog process on the size distribution of polycyclic aromatic hydro-carbons in the atmospheric aerosol PM10. Chemical Journal of Chinese Universities, 31(12), 2375-2382. (in Chinese)

    Farzaneh, M., 2008: Atmospheric Icing of Power Net-works. Springer, Quebec, 382pp.

    Fikke, S. M., 2005: Modern meteorology and atmospheric icing. Proc. 11th International Workshop on Atmospheric Icing of Structures(IWAIS), Montreal, Canada, Paper IW73.

    He, Y. J., B. Zhu, and L. Ma, 2003: The physical process of Chongqing fog's genesis and dissipation in winter. Journal of Nanjing Institute of Meteorology, 26(6), 821-828. (in Chinese)

    Hu, Y., 2007: Analysis on Operation Faults of Trans-mission Line and Countermeasures. China Electric Power Press, Beijing, 318pp. (in Chinese)

    Huang, J. P., Q. Y. Mei, Y. C. Jin, and Z. H. Li, 1998: Microphysical structure features and evolution pro-cesses of radiation fog in Huning Region.Meteorolog-ical Monthly, 24(5), 3-7. (in Chinese)

    Huffnan, G. J., and G. A. Noman, 1988: The supercooled warm rain process and the specification of freezing precipitation.Mon. Wea. Rev., 116(11), 2172-2182.

    Ikeda, K., R. M. Rasmussen, W. D. Hall, and G. Thomp-son, 2007: Observations of freezing drizzle in extra-tropical cyclonic storms during IMPROVE-2.J. At-mos. Sci., 64(9), 3016-3043.

    Jia, R., S. J. Niu, and R. Li, 2010: Observational study on microphysical characteristics of wire icing in west Hubei.Scientia Meteorologica Sinica, 30(4), 481-486. (in Chinese)

    Jiang, X. L., and H. Yi, 2002: Transmission Line Rege-lation Harm and Protection. China Electric Power Press, Beijing, 200pp. (in Chinese)

    Jiang, Z. F., 1983: The growth rate of ice accretion on power line.Chinese Science Bulletin, 15(4), 928-931. (in Chinese)

    Jones, K. F., 1998: A simple model for freezing rain ice loads. Atmospheric Research, 46(1-2), 87-97.

    Koziol, A. S., and H. G. Leighton, 1996: The effect of tur-bulence on the collision rates of small cloud drops. J. Atmos. Sci., 53(13), 1910-1920.

    Lee, C. K., G. W. Lee, I. Zawadzki, and K. E. Kim, 2009: A preliminary analysis of spatial variability of rain-drop size distributions during stratiform rain events. J. Appl. Meteor. Climatol., 48(2), 270-283.

    Lin, C. L., and S. C. Lee, 1975: Collision e±ciency of wa-ter drops in the atmosphere. J. Atmos. Sci., 32(7), 1412-1418.

    Liu, D. Y., S. J. Niu, J. Yang, L. J. Zhao, J. J. L?u, and C. S. Lu, 2012: Summary of a 4-year fog field study in northern Nanjing, Part 1: Fog boundary layer.Pure Appl. Geophys., 169(5-6), 809-819.

    Liu, Y. G., P. H. Daum, and R. L. McGraw, 2005: Size truncation effect, threshold behavior, and a new type of autoconversion parameterization. Geophys. Res. Lett., 32, L11811, doi: 10.1029/2005GL022636.

    Liu, Y. G., P. H. Daum, R. L. McGraw, and M. Miller, 2006: Generalized threshold function accounting for effect of relative dispersion on threshold behavior of autoconversion process. Geophys. Res. Lett., 33, L11804, doi: 10.1029/2005GL025500.

    Liu, Y. G., P. H. Daum, S. S. Yum, and J. Wang, 2008: Use of microphysical relationships to discern growth/decay mechanisms of cloud droplets with fo-cus on Z-LWC relationships, Proc. 15th International Conference on Clouds and Precipitation, Cancun, Mexico, CD-ROM.

    Lu, C. S., S. J. Niu, J. Yang, X. Liu, and L. J. Zhao, 2010: Jump features and causes of macro and microphysi-cal structures of a winter fog in Nanjing.Chinese J. Atmos. Sci., 34(4), 681-690. (in Chinese)

    Luo, N., J. F. Wen, C. Zhao, and L. Tang, 2008: Ob-servation study on properties of cloud and fog in ice accretion areas.J. Appl. Meteor. Sci., 19(1), 91-95. (in Chinese)

    Makkonen, L., 1984: Modeling of ice accretion on wires. J. Appl. Meteor., 23(6), 929-939.

    Makkonen, L., 1998: Modeling power line icing in freezing precipitation.Atmospheric Research, 46(1-2), 131-142. Makkonen, L., 2000: Models for the growth of rime, glaze, icicles and wet snow on structures. Phil. Trans. Roy. Soc. London(A),358(1776), 2913-2939.

    Makkonen, L., and K. Ahti, 1995: Climatic mapping of ice loads based on airport weather observations. At-mospheric Research, 36(3-4), 185-193.

    Martner, B. E., R. M. Rauber, M. K. Ramamurthy, R. M. Rasmussen, and E. T. Prater, 1992: Impacts of a destructive and well-observed cross-country winter storm. Bull. Amer. Meteor. Soc., 73(2), 169-172.

    Moumouni, S., M. Gosset, and E. Houngninou, 2008: Main features of rain drop size distributions ob-served in Benin, West Africa, with optical dis-drometers. Geophys. Res. Lett., 35, L23807, doi: 10.1029/2008GL035755.

    Niu, S. J., Y. Zhou, R. Jia, J. Yang, J. J. L?u, Y. M. Ke, and Z. B. Yang, 2012b: The microphysics of ice ac-cretion on wires: Observations and simulations. Sci. China Earth Sci., 55(3), 428-437.

    Niu, S. J., C. S. Lu, Y. G. Liu, L. J. Zhao, J. J. L?u, and J. Yang, 2010a: Analysis of the microphysical struc-ture of heavy fog using a droplet spectrometer: A case study.Adv. Atmos. Sci., 27(6), 1259-1275, doi: 10.1007/s00376-010-8192-6.

    Niu, S. J., X. C. Jia, J. R. Sang, X. L. Liu, C. S. Lu, and Y. G. Liu, 2010b: Distributions of raindrop sizes and fall velocities in a semiarid plateau climate: Convec-tive versus stratiform rains. J. Appl. Meteor. Clima-tol., 49(4), 632-645.

    Niu, S. J., 2012a: Cloud and Precipitation Physics Re-search. China Meteorological Press, Beijing, 180pp. (in Chinese)

    Nygaard, B. E. K., J. E. Kristjansson, and L. Makko-nen, 2011: Prediction of in-cloud icing conditions at ground level using the WRF model.J. Appl. Meteor. Climatol., 50(12), 2445-2459.

    Pinsky, M., A. Khain, and M. Shapiro, 2001: Collision efficiency of drops in a wide range of Reynolds num-bers: Effects of pressure on spectrum evolution. J. Atmos. Sci., 58(7), 742-764.

    Prater, E. T., and A. A. Borho, 1992: Doppler radar wind and reflectivity signatures with overrunning and freezing-rain episodes: Preliminary results. J.Appl. Meteor., 31(11), 1350-1358.

    Pruppacher, H. R., and J. D. Klett, 1997:Microphysics of Clouds and Precipitation.2nd ed., Kluwer Academic Publishers, Dordrecht, 954pp.

    Ramer, J., 1993: An empirical technique for diagnos-ing precipitation type from model output. Preprints, Fifth Int. Conf. on Aviation Weather Systems, Vi-enna, VA, Amer. Meteor. Soc., 227-230.

    Rauber, R. M., L. S. Olthoff, M. K. Ramamurthy, and K. E. Kunkel, 2000: The relative importance of warm rain and melting processes in freezing precipitation events.J. Appl. Meteor., 39(7), 1185-1195.

    Reisner, J., R. M. Rasmussen, and R. T. Bruintjes, 1998: Explicit forecasting of supercooled liquid wa-ter in winter storms using the MM5 mesoscale model. Quart. J. Roy. Meteor. Soc., 124(548), 1071-1107.

    Robbins, C. C., 1998: An investigation of the local and synoptic environments associated with freezing rain in the contiguous United States. M.S. thesis, Dept. of Meteorology, Graduate College, University of Ok-lahoma, 113pp.

    Sheng, P. X., J. T. Mao, J. G. Li, A. C. Zhang, J. G. Sang, and N. X. Pan, 2003: Atmospheric Physics.Peking University Press, Beijing, 534pp. (in Chinese)

    Stewart, R. E., 1985: Precipitation types in winter storms.Pure Appl. Geophys., 123(4), 597-609.

    Sundin, E., and L. Makkonen, 1998: Ice loads on a lattice tower estimated by weather station data. J. Appl. Meteor., 37(5), 523-529.

    Szilder, K., 1994: Simulation of ice accretion on a cylinder due to freezing rain.Journal of Glaciology, 40(136), 586-594.

    Tan, G. R., 1982: On the microclimatological character-istics of icing on wires. Acta Meteorologica Sinica, 40(1), 13-23. (in Chinese)

    Thériault, J. M., and R. E. Stewart, 2010: A parameter-ization of the microphysical processes forming many types of winter precipitation. J. Atmos. Sci., 67(5), 1492-1508.

    Thériault, J. M., R. E. Stewart, J. A. Milbrandt, and M. K. Yau, 2006: On the simulation of winter precip-itation types. J. Geophys. Res., 111, D18202, doi: 10.1029/2005JD006665.

    Thériault, J. M., R. E. Stewart, and W. Henson, 2010: On the dependence of winter precipitation types on temperature, precipitation rate and associated fea-tures. J. Appl. Meteor. Climatol., 49(7), 1429-1442.

    Thorkildson, R. M., K. F. Jones, and M. K. Emery, 2009: In-cloud icing in the Columbia Basin. Mon. Wea. Rev., 137(12), 4369-4381.

    Tokay, A., and D. A. Short, 1996: Evidence from tropical raindrop spectra of the origin of rain from stratiform versus convective clouds. J. Appl. Meteor., 35(3), 355-371.

    Wallace, J. M., and P. V. Hobbs, 2006:Atmospheric Sci-ence: An Introductory Survey. 2nd ed., Academic Press, San Diego, 504pp.

    Wu, S. L., J. X. Fan, C. Y. Jiang, W. L. Li, X. Y. He, and W. Cui, 2010: Icing of wires with different heights and diameters from Lanzhou to Guanzhong.J. Appl. Meteor. Sci., 21(1), 63-69. (in Chinese)

    Xue, Y., L. P. Wang, and W. W. Grabowski, 2008: Growth of cloud droplets by turbulent collision-coalescence.J. Atmos. Sci., 65(2), 331-356.

    Yang, J. B., Z. Li, F. L. Yang, and T. Z. Huang, 2008: Analysis of the features of covered ice and collapsed tower of transmission line snow and ice Attacked in 2008. Advances of Power System and Hydroelectric Engineering, 24(4), 4-8. (in Chinese)

    Yip, T. C., 1993: Estimating icing amounts caused by freezing precipitation in Canada. Atmospheric Re-search, 36(3-4), 221-232.

    Yum, S., 1998: Cloud droplet spectral broadening in warm clouds: An observational and model study. Ph. D. thesis, University of Nevada, Reno, Nevada, USA, 191pp.

    Yuter, S. E., D. E. Kingsmill, L. B. Nance, and M. L?o2er-Mang, 2006: Observations of precipitation size and fall speed characteristics within coexisting rain and wet snow.J. Appl. Meteor., 45(10), 1450-1464.

    Zerr, R. J., 1997: Freezing rain: An observational and theoretical study. J. Appl. Meteor., 36(12), 1647-1661.

    Zhang, G. Q., J. K. Zhang, D. L. Qi, M. L. Ma, Z. G. Chen, and S. H. Jia, 2006: Observation study on wire icing at eastern of Qinghai.J. Appl. Meteor. Sci., 17(4), 508-510. (in Chinese)

    Zhou, Y., S. J. Niu, J. J. L?u, and L. J. Zhao, 2012: Me-teorological conditions of ice accretion based on real-time observation of high voltage transmission line. Chinese Science Bulletin, 57(7), 812-818.

    Zhu, C. C., L. Ruan, T. Wang, W. T. Deng, and J. G. Ma, 2008: Analysis and countermeasures to the transmis-sion line icing accidents of Hubei Power Grid. Hubei Electric Power, 32(suppl.), 82-84. (in Chinese)
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    [12] Richard L. Pitter, Renyi Zhang, 1991: Numerical Simulation of the Scavenging Rates of Ice Crystals of Various Microphysical Characteristics, ADVANCES IN ATMOSPHERIC SCIENCES, 8, 175-200.  doi: 10.1007/BF02658093
    [13] SHEN Xinyong, LIU Jia, Xiaofan LI, 2012: Torrential Rainfall Responses to Ice Microphysical Processes during Pre-Summer Heavy Rainfall over Southern China, ADVANCES IN ATMOSPHERIC SCIENCES, 29, 493-500.  doi: 10.1007/s00376-011-1122-4
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    Manuscript received: 10 February 2012
    Manuscript revised: 21 August 2012
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    The Influence of Freezing Drizzle on Wire Icing during Freezing Fog Events

      Corresponding author: NIU Shengjie; 
    • 1. Jiangsu Key Laboratory of Atmospheric Environmental Monitoring and Pollution Control, School of Atmospheric Physics, Nanjing University of Information Science and Technology, Nanjing 210044;
    • 2. Hubei Key Laboratory for Heavy Rain Monitoring and Warning Research, Institute of Heavy Rain, China Meteorological Administration, Wuhan 430074
    • Manuscript received: 2012-02-10
    • Manuscript revised: 2012-08-21
    Fund Project:  This work was supported by the National Key Technology RD Program (Grant No. 2008BAC48B01), the National Natural Science Founda-tion of China (Grant Nos. 40775012 and 41275151), the Jiangsu Province Qinglan Project for Cloud Fog Precipi-tation and the Aerosol Research Group, a Project Funded by the Priority Academic Program Development of Jiangsu Higher Education Institutions, and the Graduate Student Innovation Plan in the Universities of Jiangsu Province.

    Abstract: Both direct and indirect effects of freezing drizzle on ice accretion were analyzed for ten freezing drizzle events during a comprehensive ice thickness, fog, and precipitation observation campaign carried out during the winter of 2008 and 2009 at Enshi Radar Station (3017'N, 10916'E), Hubei Province, China. The growth rate of ice thickness was 0.85 mm h－1 during the freezing drizzle period, while the rate was only 0.4 mm h－1 without sleet and freezing drizzle. The rain intensity, liquid water content (LWC), and diameter of freezing drizzle stayed at low values. The development of microphysical properties of fog was suppressed in the freezing drizzle period. A threshold diameter (Dc) was proposed to estimate the inuence of freezing drizzle on different size ranges of fog droplets. Fog droplets with a diameter less thanDc would be affected slightly by freezing drizzle, while larger fog droplets would be affected signicantly. Dc had a correlation with the average rain intensity, with a correlation coefficient of 0.78. The relationships among the microphysical properties of fog droplets were all positive when the effect of freezing drizzle was weak, while they became poor positive correlations, or even negative correlations during freezing drizzle period. The direct contribution of freezing drizzle to ice thickness was about 14.5%. Considering both the direct and indirect effects, we suggest that freezing drizzle could act as a catalyst causing serious icing conditions.

    摘要: Both direct and indirect effects of freezing drizzle on ice accretion were analyzed for ten freezing drizzle events during a comprehensive ice thickness, fog, and precipitation observation campaign carried out during the winter of 2008 and 2009 at Enshi Radar Station (3017'N, 10916'E), Hubei Province, China. The growth rate of ice thickness was 0.85 mm h-1 during the freezing drizzle period, while the rate was only 0.4 mm h-1without sleet and freezing drizzle. The rain intensity, liquid water content (LWC), and diameter of freezing drizzle stayed at low values. The development of microphysical properties of fog was suppressed in the freezing drizzle period. A threshold diameter (Dc) was proposed to estimate the inuence of freezing drizzle on different size ranges of fog droplets. Fog droplets with a diameter less thanDc would be affected slightly by freezing drizzle, while larger fog droplets would be affected signicantly. Dc had a correlation with the average rain intensity, with a correlation coefficient of 0.78. The relationships among the microphysical properties of fog droplets were all positive when the effect of freezing drizzle was weak, while they became poor positive correlations, or even negative correlations during freezing drizzle period. The direct contribution of freezing drizzle to ice thickness was about 14.5%. Considering both the direct and indirect effects, we suggest that freezing drizzle could act as a catalyst causing serious icing conditions.

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