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Готові списки джерел за темами / Radar meteorology / Статті в журналах

Щоб переглянути інші типи публікацій з цієї теми, перейдіть за посиланням: Radar meteorology.

Статті в журналах з теми "Radar meteorology"

Автор: Grafiati

Опубліковано: 4 червня 2021

Оновлено: 30 липня 2024

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1

Browning, K. A. "Uses of radar in meteorology." Contemporary Physics 27, no. 6 (November 1986): 499–517. http://dx.doi.org/10.1080/00107518608211028.

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2

Hallett, John, Melanie Wetzel, and Steven Rutledge. "Field Training in Radar Meteorology." Bulletin of the American Meteorological Society 74, no. 1 (January 1993): 17–22. http://dx.doi.org/10.1175/1520-0477(1993)074<0017:ftirm>2.0.co;2.

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3

Lombardo, F., F. Napolitano, F. Russo, G. Scialanga, L. Baldini, and E. Gorgucci. "Rainfall estimation and ground clutter rejection with dual polarization weather radar." Advances in Geosciences 7 (February 16, 2006): 127–30. http://dx.doi.org/10.5194/adgeo-7-127-2006.

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Abstract. Conventional radars, used for atmospheric remote sensing, usually operate at a single polarization and frequency to estimate storm parameters such as rainfallrate and water content. Because of the high variability of the drop size distribution conventional radars do not succeed in obtaining detailed information because they just use horizontal reflectivity. The potentiality of the dual-polarized weather radar is investigated, in order to reject the ground-clutter, using differential reflectivity. In this light, a radar meteorology campaign was conducted over the city of Rome (Italy),

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4

Zrnić, Dušan S. "Weather Radar Polarimetry–Trends Toward Operational Applications." Bulletin of the American Meteorological Society 77, no. 7 (July 1, 1996): 1529–34. http://dx.doi.org/10.1175/1520-0477-77.7.1529.

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This is a version of a speech presented at the 27th Conference on Radar Meteorology. Relative advantages of polarimetry are contrasted with the advantages accrued by the introduction of radar into meteorology and by the addition of Doppler measurements. A description of present interests as perceived by the author follows, and possible future trends are suggested.

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5

Rutledge, Steven A., and V. Chandrasekar. "Some Educational Innovations in Radar Meteorology." Meteorological Monographs 30, no. 52 (August 2003): 259. http://dx.doi.org/10.1175/0065-9401(2003)030<0259:seiirm>2.0.co;2.

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6

Meischner, Peter. "First European conference on radar meteorology." Physics and Chemistry of the Earth, Part B: Hydrology, Oceans and Atmosphere 25, no. 10-12 (January 2000): 811. http://dx.doi.org/10.1016/s1464-1909(00)00106-4.

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7

Martin, William J., and Alan Shapiro. "Discrimination of Bird and Insect Radar Echoes in Clear Air Using High-Resolution Radars." Journal of Atmospheric and Oceanic Technology 24, no. 7 (July 1, 2007): 1215–30. http://dx.doi.org/10.1175/jtech2038.1.

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Abstract The source of clear-air reflectivity from operational and research meteorological radars has been a subject of much debate and study over the entire history of radar meteorology. Recent studies have suggested that bird migrations routinely contaminate wind profiles obtained at night, while historical studies have suggested insects as the main source of such nocturnal clear-air echoes. This study analyzes two cases of nocturnal clear-air return using data from operational Weather Surveillance Radar-1988 Doppler (WSR-88D) and X- and W-band research radars. The research radars have suffi

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8

Areerachakul, Nathaporn, Sethakarn Prongnuch, Peeranat Longsomboon, and Jaya Kandasamy. "Quantitative Precipitation Estimation (QPE) Rainfall from Meteorology Radar over Chi Basin." Hydrology 9, no. 10 (October 11, 2022): 178. http://dx.doi.org/10.3390/hydrology9100178.

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This study of the Quantitative Estimation Precipitation (QEP) of rainfall, detected by two Meteorology Radars over Chi Basin, North-east Thailand, used data from the Thai Meteorological Department (TMD). The rainfall data from 129 rain gauge stations in the Chi Basin area, covering a period of two years, was also used. The study methodology consists of: firstly, deriving the QPE between radar and rainfall based on meteorological observations using the Marshall Palmer Stratiform, the Summer Deep Convection, and Regression Model and calibrating with rain gauge station data; secondly, Bias Correc

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9

Ogawa, T., S. Nozawa, M. Tsutsumi, N. F. Arnold, N. Nishitani, N. Sato, and A. S. Yukimatu. "Arctic and Antarctic polar mesosphere summer echoes observed with oblique incidence HF radars: analysis using simultaneous MF and VHF radar data." Annales Geophysicae 22, no. 12 (December 22, 2004): 4049–59. http://dx.doi.org/10.5194/angeo-22-4049-2004.

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Abstract. Polar mesosphere summer echoes (PMSEs) have been well studied using vertical incidence VHF radars at northern high-latitudes. In this paper, two PMSE events detected with the oblique incidence SuperDARN HF radars at Hankasalmi, Finland (62.3° N) and Syowa Station, Antarctica (69.0° S), are analyzed, together with simultaneous VHF and medium-frequency (MF) radar data. Altitude resolutions of the HF radars in the mesosphere and the lower thermosphere are too poor to know exact PMSE altitudes. However, a comparison of Doppler velocity from the HF radar and neutral wind velocity from the

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10

Worthington, R. M. "Asymmetry of atmospheric microstructure over synoptic scales." Annales Geophysicae 19, no. 8 (August 31, 2001): 921–24. http://dx.doi.org/10.5194/angeo-19-921-2001.

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Abstract. Distortions are often seen in the angular distribution of echo-power from VHF wind-profiling radars, suggesting that thin stable layers, within the air flow, are distorted and tilted from horizontal. In vertical shear of the horizontal wind, the distribution of the layer tilt angles becomes skewed. A case study using six days of VHF radar data and synoptic charts above western Europe indicates that this asymmetry of atmospheric microstructure can exist throughout the troposphere and lower stratosphere, above and below the jet wind maximum, over horizontal scales of thousands of kilom

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11

Ghosh, A. K., V. Siva Kumar, K. Kishore Kumar, and A. R. Jain. "VHF radar observation of atmospheric winds, associated shears and <b>C<sup>2</sup></b><b><sub>n</sub></b> at a tropical location: interdependence and seasonal pattern." Annales Geophysicae 19, no. 8 (August 31, 2001): 965–73. http://dx.doi.org/10.5194/angeo-19-965-2001.

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Abstract. The turbulence refractivity structure constant (C2n ) is an important parameter of the atmosphere. VHF radars have been used extensively for the measurements of C2n. Presently, most of such observations are from mid and high latitudes and only very limited observations are available for equatorial and tropical latitudes. Indian MST radar is an excellent tool for making high-resolution measurements of atmospheric winds, associated shears and turbulence refractivity structure constant (C2n). This radar is located at Gadanki (13.45° N, 79.18° E), a tropical station in India. The objecti

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12

Steiner, Matthias, and Peter F. Meischner. "The 30th International Conference on Radar Meteorology." Bulletin of the American Meteorological Society 83, no. 11 (November 2002): 1649–56. http://dx.doi.org/10.1175/bams-83-11-1649.

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13

Steiner, Matthias, and Peter F. Meischner. "The 30th International Conference on Radar Meteorology." Bulletin of the American Meteorological Society 83, no. 11 (November 2002): 1649–56. http://dx.doi.org/10.1175/bams-83-11-1649(2002)083<1649:ticorm>2.3.co;2.

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14

Cao, Qing, Guifu Zhang, and Ming Xue. "A Variational Approach for Retrieving Raindrop Size Distribution from Polarimetric Radar Measurements in the Presence of Attenuation." Journal of Applied Meteorology and Climatology 52, no. 1 (January 2013): 169–85. http://dx.doi.org/10.1175/jamc-d-12-0101.1.

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AbstractThis study presents a two-dimensional variational approach to retrieving raindrop size distributions (DSDs) from polarimetric radar data in the presence of attenuation. A two-parameter DSD model, the constrained-gamma model, is used to represent rain DSDs. Three polarimetric radar measurements—reflectivity ZH, differential reflectivity ZDR, and specific differential phase KDP—are optimally used to correct for the attenuation and retrieve DSDs by taking into account measurement error effects. Retrieval results with simulated data demonstrate that the proposed algorithm performs well. Ap

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15

Manson, A. H., C. E. Meek, C. M. Hall, S. Nozawa, N. J. Mitchell, D. Pancheva, W. Singer, and P. Hoffmann. "Mesopause dynamics from the scandinavian triangle of radars within the PSMOS-DATAR Project." Annales Geophysicae 22, no. 2 (January 1, 2004): 367–86. http://dx.doi.org/10.5194/angeo-22-367-2004.

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Abstract. The "Scandinavian Triangle" is a unique trio of radars within the DATAR Project (Dynamics and Temperatures from the Arctic MLT (60–97km) region): Andenes MF radar (69°N, 16°E); Tromsø MF radar (70°N, 19°E) and Esrange "Meteor" radar (68°N, 21°E). The radar-spacings range from 125-270km, making it unique for studies of wind variability associated with small-scale waves, comparisons of large-scale waves measured over small spacings, and for comparisons of winds from different radar systems. As such it complements results from arrays having spacings of 25km and 500km that have been loca

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16

Pilorz, Wojciech, and Philip Ciaramella. "Preliminary reflectivity analysis of severe convective events in in the proximity of Goczałkowice-Zdrój, Poland." Environmental & Socio-economic Studies 7, no. 2 (June 1, 2019): 32–38. http://dx.doi.org/10.2478/environ-2019-0010.

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Abstract At the beginning of 2018, the X-band radar in Goczałkowice-Zdrój (southern Poland) was launched. The scanning area corresponds with the scanning area of the POLRAD C-band radar system operated by the Polish Institute of Meteorology and Water Management. New opportunities were created for imaging phenomena by comparing some reflectivity features from C-Band radar and X-Band local weather radar. Moreover, some of the signatures located in the lower troposphere can be better documented by local X-Band radar. Firstly, reports from the ESWD (European Severe Weather Database) have been thor

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17

Hubbert, J. C., and V. N. Bringi. "Specular null polarization theory: applications to radar meteorology." IEEE Transactions on Geoscience and Remote Sensing 34, no. 4 (July 1996): 859–73. http://dx.doi.org/10.1109/36.508403.

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18

Rosyadi, Fahmi, Masbah R. T. Siregar, and Abdul Multi. "INTEGRASI DISTRIBUSI DATA RADAR MENGGUNAKAN TEKNOLOGI BLOCKCHAIN DAN KRIPTOGRAF." SAINSTECH: JURNAL PENELITIAN DAN PENGKAJIAN SAINS DAN TEKNOLOGI 32, no. 3 (July 18, 2022): 1–11. http://dx.doi.org/10.37277/stch.v32i3.1343.

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Abstract Currently, radar is widely used in various fields such as meteorology, military, police, shipping, aviation, agriculture, disaster, and research. Meanwhile, currently the use of radar is still in the form of sectoral, partial, and fragmented so that the use of radar data is only internal. With Indonesia's geographical condition which is very broad and the integration and distribution of radar data has not been maximized, this has resulted in the lack of geographic area of Indonesia that is reached by radar. The use or exchange of radar data still uses client-server-based infor

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19

Hocking, W. K. "A new approach to momentum flux determinations using SKiYMET meteor radars." Annales Geophysicae 23, no. 7 (October 14, 2005): 2433–39. http://dx.doi.org/10.5194/angeo-23-2433-2005.

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Abstract. The current primary radar method for determination of atmospheric momentum fluxes relies on multiple beam studies, usually using oppositely directed coplanar beams. Generally VHF and MF radars are used, and meteor radars have never been successfully employed. In this paper we introduce a new procedure that can be used for determination of gravity wave fluxes down to time scales of 2-3h, using the SKiYMET meteor radars. The method avoids the need for beam forming, and allows simultaneous determination of the three components of the wind averaged over the radar volume, as well as the v

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20

Ogawa, T., N. F. Arnold, S. Kirkwood, N. Nishitani, and M. Lester. "Finland HF and Esrange MST radar observations of polar mesosphere summer echoes." Annales Geophysicae 21, no. 4 (April 30, 2003): 1047–55. http://dx.doi.org/10.5194/angeo-21-1047-2003.

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Abstract. Peculiar near range echoes observed in summer with the SuperDARN HF radar in Finland are presented. The echoes were detected at four frequencies of 9, 11, 13 and 15 MHz at slant ranges of 105–250 km for about 100 min. Interferometer measurements indicate that the echoes are returned from 80–100 km altitudes with elevation angles of 20°–60°. Echo power (< 16 dB), Doppler velocity (between –30 and + 30 ms-1) and spectral width (< 60 ms-1) fluctuate with periods of several to 20 min, perhaps due to short–period atmospheric gravity waves. When the HF radar detected the echoes, a ve

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21

Hocking, W. K., and J. Röttger. "The structure of turbulence in the middle and lower atmosphere seen by and deduced from MF, HF and VHF radar, with special emphasis on small-scale features and anisotropy." Annales Geophysicae 19, no. 8 (August 31, 2001): 933–44. http://dx.doi.org/10.5194/angeo-19-933-2001.

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Abstract. An overview of the turbulent structures seen by MF, HF and VHF radars in the troposphere, stratosphere and mesosphere is presented, drawing on evidence from previous radar measurements, in situ studies, laboratory observations, observations at frequencies other than those under focus, and modelling studies. We are particularly interested in structures at scales less than one radar pulse length, and smaller than the beam width, and especially the degree of anisotropy of turbulence at these scales. Previous radar observations are especially important in regard to the degree of anisotro

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22

Arnold, N. F., T. B. Jones, T. R. Robinson, A. J. Stocker, and J. A. Davies. "Validation of the CUTLASS HF radar gravity wave observing capability using EISCAT CP-1 data." Annales Geophysicae 16, no. 10 (October 31, 1998): 1392–99. http://dx.doi.org/10.1007/s00585-998-1392-z.

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Abstract. Quasi-periodic fluctuations in the returned ground-scatter power from the SuperDARN HF radars have been linked to the passage of medium-scale gravity waves. We have applied a technique that extracts the first radar range returns from the F-region to study the spatial extent and characteristics of these waves in the CUTLASS field-of-view. Some ray tracing was carried out to test the applicability of this method. The EISCAT radar facility at Tromsø is well within the CUTLASS field-of-view for these waves and provides a unique opportunity to assess independently the ability of the HF ra

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23

Satheesan, K., and B. V. Krishna Murthy. "A study of tropical tropopause using MST radar." Annales Geophysicae 23, no. 7 (October 14, 2005): 2441–48. http://dx.doi.org/10.5194/angeo-23-2441-2005.

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Abstract. Using the MST radar data of vertical wind, the characteristics of the tropical tropopause, following four different definitions, depending on 1) temperature lapse rate, 2) cold point, 3) convective outflow and 4) potential temperature lapse rate minimum, are studied. From the vertical wind data of the radar, the altitude profiles of temperature and horizontal divergence are derived, from which the tropopause levels corresponding to i) the lapse rate ii) cold point iii) convective outflow level and iv) potential temperature lapse rate minimum are determined. The convective outflow lev

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24

Van Zandt, T. E. "A brief history of the development of wind-profiling or MST radars." Annales Geophysicae 18, no. 7 (July 31, 2000): 740–49. http://dx.doi.org/10.1007/s00585-000-0740-4.

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Abstract. The history of the development of the wind-profiling or MST radar technique is reviewed from its inception in the late 1960s to the present. Extensions of the technique by the development of boundary-layer radars and the radio-acoustic sounding system (RASS) technique to measure temperature are documented. Applications are described briefly, particularly practical applications to weather forecasting, with data from networks of radars, and scientific applications to the study of rapidly varying atmospheric phenomena such as gravity waves and turbulence.Key words: Meteorology and atmos

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25

Fathauer, Ted. "First Doppler weather radar studies of the wintertime meteorology of interior Alaska." Polar Record 31, no. 178 (July 1995): 287–96. http://dx.doi.org/10.1017/s0032247400013838.

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AbstractA weather surveillance radar model 88–D (WSR–88D) was installed on Pedro Dome, a hill approximately 23 km north of Fairbanks, in the late summer of 1993. The radar commenced operation in September 1993. The Fairbanks radar was the first Doppler weather radar installed in Alaska and the farthest north modern weather radar in the world. During the winter of 1993–1994 the Fairbanks radar gave meteorologists their first detailed look at the meteorology of interior Alaska. The area encompassed by the radar's field of view includes complex terrain—both large flatlands and highlands reaching

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26

Kafando, P., and M. Petitdidier. "An attempt to calibrate the UHF strato-tropospheric radar at Arecibo using NexRad radar and disdrometer data." Annales Geophysicae 22, no. 12 (December 22, 2004): 4025–34. http://dx.doi.org/10.5194/angeo-22-4025-2004.

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Abstract. The goal of this paper is to present a methodology to calibrate the reflectivity of the UHF Strato-Tropospheric (ST) radar located at NAIC in Puerto Rico. The UHF lower relevant altitude is at 5.9km, the melting layer being at around 4.8km. The data used for the calibration came from the observations of clouds, carried out with Strato-Tropospheric dual-wavelength (UHF and VHF) radars and a disdrometer; those instruments being located on the NAIC site in Arecibo, Puerto Rico. The National Weather Service operates other instruments like the radiosondes and the NexRad Radar in other sit

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27

Podhorský, Dušan, and Peter Guba. "History of remote-sensing methods in meteorology, cloud physics and nowcasting in Slovakia over the period 1965–1990." Contributions to Geophysics and Geodesy 44, no. 1 (March 1, 2014): 79–94. http://dx.doi.org/10.2478/congeo-2014-0005.

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Abstract A brief overview of building the radar and satellite meteorology in Slovakia over the period 1965-1990 and application of dispatching locators of PAR, SRE and RSR types for studying the evolution of convective cells is given. Further, the conception and implementation of a meteorological radar network in Slovakia, the algorithms for recognition of clouds and phenomena related to the parameters of radioecho are reviewed. The development of a new laser radar (LIDAR) and the application of a prototype meteorological radar with the TESLA RM-3 controlled polarizer are described.

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28

Kishore, Pangaluru, Isabella Velicogna, Tyler C. Sutterley, Yara Mohajerani, Enrico Ciracì, and Gummadipudi Nagasai Madhavi. "A case study of mesospheric planetary waves observed over a three-radar network using empirical mode decomposition." Annales Geophysicae 36, no. 3 (June 21, 2018): 925–36. http://dx.doi.org/10.5194/angeo-36-925-2018.

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Abstract. In this paper an attempt is made to study equatorial Kelvin waves using a network of three radars: Kototabang (0.204∘ S, 100.320∘ E) meteor radar, Pameungpeuk (7.646∘ S, 107.688∘ E) medium-frequency radar, and Pontianak (0.003∘ S, 109.367∘ E) medium-frequency radar. We have used the continuous data gathered from the three radars during April–May 2010. Empirical mode decomposition (EMD), Lomb–Scargle periodogram (LSP) analysis, and wavelet techniques are used to study the temporal and altitude structures of planetary waves. Here, we used a novel technique called EMD to extract the pla

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29

Worthington, R. M., R. D. Palmer, and S. Fukao. "<i>Letter to the Editor</i>: Complete maps of the aspect sensitivity of VHF atmospheric radar echoes." Annales Geophysicae 17, no. 8 (August 31, 1999): 1116–19. http://dx.doi.org/10.1007/s00585-999-1116-z.

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Abstract. Using the MU radar at Shigaraki, Japan (34.85°N, 136.10°E), we measure the power distribution pattern of VHF radar echoes from the mid-troposphere. The large number of radar beam-pointing directions (320) allows the mapping of echo power from 0° to 40° from zenith, and also the dependence on azimuth, which has not been achieved before at VHF wavelengths. The results show how vertical shear of the horizontal wind is associated with a definite skewing of the VHF echo power distribution, for beam angles as far as 30° or more from zenith, so that aspect sensitivity cannot be assumed negl

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30

Réchou, A., V. Barabash, P. Chilson, S. Kirkwood, T. Savitskaya, and K. Stebel. "Mountain wave motions determined by the Esrange MST radar." Annales Geophysicae 17, no. 7 (July 31, 1999): 957–70. http://dx.doi.org/10.1007/s00585-999-0957-9.

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Abstract. A European campaign of ground-based radar, lidar and optical measurements was carried out during the winter of 1996/1997 (28 December-2 February) to study lee waves in the northern part of Scandinavia. The participants operated ozone lidars, backscatter lidars and MST radars at ALOMAR/Andoya and Esrange/Kiruna, and an ALIS imaging system in Kiruna. The Andoya site was generally windward of the Scandinavian mountains, the Kiruna site on the leeward side. The goal of the experiment was to examine the influence of lee waves on the formation of Polar Stratospheric Clouds (PSCs). This pap

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31

Rutledge, Steven A., Patrick C. Kennedy, and David A. Brunkow. "Use of the CSU–CHILL Radar in Radar Meteorology Education at Colorado State University." Bulletin of the American Meteorological Society 74, no. 1 (January 1993): 25–31. http://dx.doi.org/10.1175/1520-0477(1993)074<0025:uotcri>2.0.co;2.

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32

Frame, D. J., B. N. Lawrence, G. J. Fraser, and M. D. Burrage. "A comparison between mesospheric wind measurements made near Christchurch (44°S, 173°E) using the high resolution doppler imager (HRDI) and a medium frequency (MF) radar." Annales Geophysicae 18, no. 5 (May 31, 2000): 555–65. http://dx.doi.org/10.1007/s00585-000-0555-3.

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Abstract. We report on the comparison of winds measured by a medium frequency (MF) radar near Christchurch, New Zealand, and by the high resolution doppler imager (HRDI). Previous comparisons have demonstrated that there can be significant differences in the winds obtained by the two techniques, and our results are no different. However, these data show relatively good agreement in the meridional direction, but large differences in the zonal direction, where the radar is regularly measuring the zonal wind as too easterly. To do the comparison, overpasses from the satellite must be obtained whe

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33

Campistron, B., G. Despaux, M. Lothon, V. Klaus, Y. Pointin, and M. Mauprivez. "A partial 45 MHz sky temperature map obtained from the observations of five ST radars." Annales Geophysicae 19, no. 8 (August 31, 2001): 863–71. http://dx.doi.org/10.5194/angeo-19-863-2001.

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Abstract. A sky temperature map at 45 MHz covering declination between + 30° and + 60° is presented. The sampling in right ascension is 20 min (~5°) and 2° in declination in most of the map. The originality of the work was to use cosmic emission measurements from five VHF Stratosphere-Troposphere (ST) radars collected during long periods of routine meteorological surveys. This map, which has an accuracy in temperature of about 600 K, is intended first for radar reflectivity calibration and system performance monitoring. The presence of two strong radio sources, Cassiopeia A and Cygnus A, can a

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34

Griffin, Casey B., David J. Bodine, and Robert D. Palmer. "Kinematic and Polarimetric Radar Observations of the 10 May 2010, Moore–Choctaw, Oklahoma, Tornadic Debris Signature." Monthly Weather Review 145, no. 7 (July 2017): 2723–41. http://dx.doi.org/10.1175/mwr-d-16-0344.1.

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Tornadoes are capable of lofting large pieces of debris that present irregular shapes, near-random orientations, and a wide range of dielectric constants to polarimetric radars. The unique polarimetric signature associated with lofted debris is called the tornadic debris signature (TDS). While ties between TDS characteristics and tornado- and storm-scale kinematic processes have been speculated upon or investigated using photogrammetry and single-Doppler analyses, little work has been done to document the three-dimensional wind field associated with the TDS. Data collected by the Oklahoma City

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35

Griffin, Casey B., David J. Bodine, and Robert Palmer. "Polarimetric Radar Observations of Simultaneous Tornadoes on 10 May 2010 near Norman, Oklahoma." Monthly Weather Review 148, no. 2 (January 3, 2020): 477–97. http://dx.doi.org/10.1175/mwr-d-19-0156.1.

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Abstract This study utilizes data collected by the University of Oklahoma Advanced Radar Research Center’s Polarimetric Radar for Innovations in Meteorology and Engineering (OU-PRIME) C-band radar as well as the federal KTLX and KOUN WSR-88D S-band radars to study a supercell that simultaneously produced a long-track EF-4 tornado and an EF-2 landspout tornado (EF indicates the enhanced Fujita scale) near Norman, Oklahoma, on 10 May 2010. Contrasting polarimetric characteristics of two tornadoes over similar land cover but with different intensities are documented. Also, the storm-scale sedimen

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36

Hall, C. M. "On the influence of neutral turbulence on ambipolar diffusivities deduced from meteor trail expansion." Annales Geophysicae 20, no. 11 (November 30, 2002): 1857–62. http://dx.doi.org/10.5194/angeo-20-1857-2002.

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Abstract. By measuring fading times of radar echoes from underdense meteor trails, it is possible to deduce the ambipolar diffusivities of the ions responsible for these radar echoes. It could be anticipated that these diffusivities increase monotonically with height akin to neutral viscosity. In practice, this is not always the case. Here, we investigate the capability of neutral turbulence to affect the meteor trail diffusion rate.Key words. Meteorology and atmospheric dynamics (middle atmosphere dynamics; turbulence)

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Méri, Ladislav, Ladislav Gaál, Juraj Bartok, Martin Gažák, Martin Gera, Marián Jurašek, and Miroslav Kelemen. "Improved Radar Composites and Enhanced Value of Meteorological Radar Data Using Different Quality Indices." Sustainability 13, no. 9 (May 9, 2021): 5285. http://dx.doi.org/10.3390/su13095285.

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Radar measurements are inherently affected by various meteorological and non-meteorological factors that may lead to a degradation of their quality, and the unwanted effects are also transferred into composites, i.e., overlapping images from different radars. The paper was aimed at answering the research question whether we could create ‘cleaner’ radar composites without disturbing features, and if yes, how the operational practice could take advantage of the improved results. To achieve these goals, the qRad and qPrec software packages, based on the concept of quality indices, were used. The

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38

Teshiba, M., H. Hashiguchi, S. Fukao, and Y. Shibagaki. "Typhoon 9707 observations with the MU radar and L-band boundary layer radar." Annales Geophysicae 19, no. 8 (August 31, 2001): 925–31. http://dx.doi.org/10.5194/angeo-19-925-2001.

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Abstract. Typhoon 9707 (Opal) was observed with the VHF-band Middle and Upper atmosphere (MU) radar, an L-band boundary layer radar (BLR), and a vertical-pointing C-band meteorological radar at the Shigaraki MU Observatory in Shiga prefecture, Japan on 20 June 1997. The typhoon center passed about 80 km southeast from the radar site. Mesoscale precipitating clouds developed due to warm-moist airmass transport from the typhoon, and passed over the MU radar site with easterly or southeasterly winds. We primarily present the wind behaviour including the vertical component which a conventional met

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Sokol, Zbyněk, Jana Minářová, and Petr Novák. "Classification of Hydrometeors Using Measurements of the Ka-Band Cloud Radar Installed at the Milešovka Mountain (Central Europe)." Remote Sensing 10, no. 11 (October 23, 2018): 1674. http://dx.doi.org/10.3390/rs10111674.

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In radar meteorology, greater interest is dedicated to weather radars and precipitation analyses. However, cloud radars provide us with detailed information on cloud particles from which the precipitation consists of. Motivated by research on the cloud particles, a vertical Ka-band cloud radar (35 GHz) was installed at the Milešovka observatory in Central Europe and was operationally measuring since June 2018. This study presents algorithms that we use to retrieve vertical air velocity (Vair) and hydrometeors. The algorithm calculating Vair is based on small-particle tracers, which considers t

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Kishore Kumar, K., A. R. Jain, and D. Narayana Rao. "VHF/UHF radar observations of tropical mesoscale convective systems over southern India." Annales Geophysicae 23, no. 5 (July 28, 2005): 1673–83. http://dx.doi.org/10.5194/angeo-23-1673-2005.

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Abstract. Several campaigns have been carried out to study the convective systems over Gadanki (13.5° N, 79.2° E), a tropical station in India, using VHF and UHF radars. The height-time sections of several convective systems are investigated in detail to study reflectivity, turbulence and vertical velocity structure. Structure and dynamics of the convective systems are the main objectives of these campaigns. The observed systems are classified into single- and multi-cell systems. It has been observed that most of the convective systems at this latitude are multi-cellular in nature. Simultaneou

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Arnold, N. F., P. A. Cook, T. R. Robinson, M. Lester, P. J. Chapman, and N. Mitchell. "Comparison of D-region Doppler drift winds measured by the SuperDARN Finland HF radar over an annual cycle using the Kiruna VHF meteor radar." Annales Geophysicae 21, no. 10 (October 31, 2003): 2073–82. http://dx.doi.org/10.5194/angeo-21-2073-2003.

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Abstract. The SuperDARN chain of oblique HF radars has provided an opportunity to generate a unique climatology of horizontal winds near the mesopause at a number of high latitude locations, via the Doppler shifted echoes from sources of ionisation in the D-region. Ablating meteor trails form the bulk of these targets, but other phenomena also contribute to the observations. Due to the poor vertical resolution of the radars, care must be taken to reduce possible biases from sporadic-E layers and Polar Mesospheric Summer echoes that can affect the effective altitude of the geophysical parameter

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Imran, Shaik, T. Anuradha, and Ratnala Bharat. "Radar Based Precipitation Nowcasting Prediction by Using Deep Learning Techniques." E3S Web of Conferences 405 (2023): 04003. http://dx.doi.org/10.1051/e3sconf/202340504003.

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Nowcasting is an emerging area in meteorology that focuses on accurately anticipating the severity of short-term rainfall for a particular location. It is essential to many facets of society. Owing to its significance, researchers are experimenting to predict short term rainfall using neural network approaches. This study analyses proposes a novel method of merging Convolutional Neural Network and Long Short-Term Memory neural networks on a radar echo dataset. The model was tested against a synthetic moving mnist dataset before applying on actual radar image dataset. Given the previous radar i

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Islam, Tanvir, and Miguel A. Rico-Ramirez. "An overview of the remote sensing of precipitation with polarimetric radar." Progress in Physical Geography: Earth and Environment 38, no. 1 (December 24, 2013): 55–78. http://dx.doi.org/10.1177/0309133313514993.

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Recent advances in radar remote sensing of precipitation include the development of polarimetric radar, which has the capability of transmitting in both the horizontal ( H) and vertical ( V) polarization states, thus providing additional information on the target precipitation particles. Radar polarimetry has not only been proven to improve data quality and precipitation estimation, but also improves characterization of precipitation particles; thus it has great potential in weather monitoring and forecasting. Realizing the potential of this state-of-the-art technology, meteorological departme

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McCarthy, Nicholas, Hamish McGowan, Adrien Guyot, and Andrew Dowdy. "Mobile X-Pol Radar: A New Tool for Investigating Pyroconvection and Associated Wildfire Meteorology." Bulletin of the American Meteorological Society 99, no. 6 (June 2018): 1177–95. http://dx.doi.org/10.1175/bams-d-16-0118.1.

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AbstractThe process of pyroconvection occurs when fire-released heat, moisture, and/or aerosols induce or augment convection in the atmosphere. Prediction of pyroconvection presents a set of complex problems for meteorologists and wildfire managers. In particular, the turbulent characteristics of a pyroconvective plume exert bidirectional feedback on fire behavior, often with resulting severe impacts on life and property. Here, we present the motivation, field strategy, and initial results from the Bushfire Convective Plume Experiment, which through the use of mobile radar aims to quantify the

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45

Palmer, Robert D., David Bodine, Matthew Kumjian, Boonleng Cheong, Guifu Zhang, Qing Cao, Howard B. Bluestein, Alexander Ryzhkov, Tian-You Yu, and Yadong Wang. "Observations of the 10 May 2010 Tornado Outbreak Using OU-PRIME: Potential for New Science with High-Resolution Polarimetric Radar." Bulletin of the American Meteorological Society 92, no. 7 (July 1, 2011): 871–91. http://dx.doi.org/10.1175/2011bams3125.1.

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A tornado outbreak occurred in central Oklahoma on 10 May 2010, including two tornadoes with enhanced Fujita scale ratings of 4 (EF-4). Tragically, three deaths were reported along with significant property damage. Several strong and violent tornadoes occurred near Norman, Oklahoma, which is a major hub for severe storms research and is arguably one of the best observed regions of the country with multiple Doppler radars operated by both the federal government and the University of Oklahoma (OU). One of the most recent additions to the radars in Norman is the high-resolution OU Polarimetric Ra

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46

Benarie, Michel. "Applications of weather radar wystems: A guide to uses of radar data in meteorology and hydrology." Science of The Total Environment 101, no. 3 (January 1991): 293–94. http://dx.doi.org/10.1016/0048-9697(91)90046-h.

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47

Srivastava, R. C. "Applications of weather radar systems: A guide to uses of radar data in meteorology and hydrology." Journal of Hydrology 130, no. 1-4 (January 1992): 408–9. http://dx.doi.org/10.1016/0022-1694(92)90122-c.

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48

Qi, Youcun, Zhe Zhang, Zhanfeng Zhao, Bong-Chul Seo, and Huiqi Li. "An Editorial for the Special Issue “Processing and Application of Weather Radar Data”." Remote Sensing 16, no. 11 (May 30, 2024): 1967. http://dx.doi.org/10.3390/rs16111967.

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In 2019, the World Meteorological Organization (WMO) pointed out the following based on the statistics from 2007 to 2019: in natural disasters, 90% of losses are related to meteorology, of which heavy storms and floods account for more than 70% [...]

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Bringi and Zrnic. "Polarization Weather Radar Development from 1970–1995: Personal Reflections." Atmosphere 10, no. 11 (November 15, 2019): 714. http://dx.doi.org/10.3390/atmos10110714.

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The modern era of polarimetric radar begins with radiowave propagation research starting in the early 1970s with applications to measurement and modeling of wave attenuation in rain and depolarization due to ice particles along satellite–earth links. While there is a rich history of radar in meteorology after World War II, the impetus provided by radiowave propagation requirements led to high-quality antennas and feeds. Our journey starts by describing the key institutions and personnel responsible for development of weather radar polarimetry. The early period was dominated by circularly polar

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50

Probert-Jones, Richard. "Fundamental advances in radar meteorology in the United Kingdom, 1940-1965." Weather 70, no. 4 (April 2015): 111–16. http://dx.doi.org/10.1002/wea.2457.

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