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Journal articles on the topic 'Ondes de rossby'

Author: Grafiati

Published: 4 June 2021

Last updated: 25 May 2024

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1

Márquez-Artavia, Xiomara. "Descifrando el clima espacial: ciclos solares y ondas magnéticas de Rossby." Uniciencia 33, no. 2 (2019): 98–109. http://dx.doi.org/10.15359/ru.33-2.7.

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El objetivo de esta investigación es explorar si existe una relación entre las ondas magnéticas de Rossby rápidas o lentas y ciertas observaciones de la actividad solar de largo y muy largo plazo (meses, años, décadas…). El artículo intenta mostrar si los periodos de esas ondas y sus características corresponden a los valores de duración los ciclos de Rieger, Haly, o bien cuasiperiodos de llamaradas y eyecciones de masa coronal. Se inicia con una revisión bibliográfica y un resumen de los resultados de una tesis doctoral que resuelve completamente el modelo matemático en cuestión, con las ecua

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2

Triana, Santiago A., Gustavo Guerrero, Ankit Barik, and Jérémy Rekier. "Identification of Inertial Modes in the Solar Convection Zone." Astrophysical Journal Letters 934, no. 1 (2022): L4. http://dx.doi.org/10.3847/2041-8213/ac7dac.

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Abstract The observation of global acoustic waves (p modes) in the Sun has been key to unveiling its internal structure and dynamics. A different kind of wave, known as sectoral Rossby modes, has been observed and identified, which potentially opens the door to probing internal processes that are inaccessible through p-mode helioseismology. Yet another set of waves, appearing as retrograde-propagating, equatorially antisymmetric vorticity waves, has also been observed but their identification remained elusive. Here, through a numerical model implemented as an eigenvalue problem, we provide evi

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Durland, Theodore S., and J. Thomas Farrar. "Another Note on Rossby Wave Energy Flux." Journal of Physical Oceanography 50, no. 2 (2020): 531–34. http://dx.doi.org/10.1175/jpo-d-19-0237.1.

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AbstractLonguet-Higgins in 1964 first pointed out that the Rossby wave energy flux as defined by the pressure work is not the same as that defined by the group velocity. The two definitions provide answers that differ by a nondivergent vector. Longuet-Higgins suggested that the problem arose from ambiguity in the definition of energy flux, which only impacts the energy equation through its divergence. Numerous authors have addressed this issue from various perspectives, and we offer one more approach that we feel is more succinct than previous ones, both mathematically and conceptually. We fol

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4

Wang, Yafei, Koji Yamazaki, and Yasushi Fujiyoshi. "The Interaction between Two Separate Propagations of Rossby Waves." Monthly Weather Review 135, no. 10 (2007): 3521–40. http://dx.doi.org/10.1175/mwr3486.1.

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Abstract This study deals with two teleconnection patterns and the subsequent wave train propagations during an East Asian summer. Diagnostic results are as follows: 1) a stationary wave ray with zonal wavenumber 5 approximates the arc path linking the correlation centers originating from the Caspian Sea via Lake Baikal to the sea off the southeast coast of Japan (i.e., the OKJ arc path as a focus area) in a pentad correlation map between 500-hPa geopotential height (Z500) and outgoing longwave radiation (OLR) at 30°N, 150°E in June 1979–98. Ray tracing shows that it took 8–10 days for this st

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5

Liberato, M. L. R., J. M. Castanheira, L. de la Torre, C. C. DaCamara, and L. Gimeno. "Wave Energy Associated with the Variability of the Stratospheric Polar Vortex." Journal of the Atmospheric Sciences 64, no. 7 (2007): 2683–94. http://dx.doi.org/10.1175/jas3978.1.

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Abstract A study is performed on the energetics of planetary wave forcing associated with the variability of the northern winter polar vortex. The analysis relies on a three-dimensional normal mode expansion of the atmospheric general circulation that allows partitioning the total (i.e., kinetic + available potential) atmospheric energy into the energy associated with Rossby and inertio-gravity modes with barotropic and baroclinic vertical structures. The analysis mainly departs from traditional ones in respect to the wave forcing, which is here assessed in terms of total energy amounts associ

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Kadyschnikov, V., and D. P. Casarin. "Influência seletiva da turbulência sobre as ondas de Rossby e de Lamb na atmosfera barotrópica." Revista Brasileira de Geofísica 15, no. 3 (1997): 251–56. http://dx.doi.org/10.1590/s0102-261x1997000300004.

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7

Parés-Sierra, A. "Remote and local forcing of Rossby wave variability in the midlatitude Pacific Ocean." Geofísica Internacional 30, no. 3 (1991): 121–34. http://dx.doi.org/10.22201/igeof.00167169p.1991.30.3.598.

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Un modelo de gravedad reducida se utilizó para investigar la variabilidad de baja frecuencia en el Pacífico Nororiental. El dominio del modelo abarca desde los 18°N hasta los 50°N y desde 155°O hasta la costa oeste de Norteamérica. En un primer experimento, el modelo es forzado por el esfuerzo del viento (COADS). Un segundo experimento consiste en forzar el modelo a través de su frontera austral usando los resultados de un modelo ecuatorial de gravedad reducida. Encontrarnos que los espectros de número de onda-frecuencia calculados a partir de los resultados de nuestro modelo son congruentes c

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8

Müller, Gabriela V., Simone E. T. Ferraz, and Tércio Ambrizzi. "Propagacão das ondas de rossby nos invernos de máxima freqüência de ocorrência de geadas na pampa úmida." Revista Brasileira de Meteorologia 24, no. 1 (2009): 56–62. http://dx.doi.org/10.1590/s0102-77862009000100006.

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Neste trabalho estudou-se a influência dos padrões de onda extratropicais, que favorecem o desenvolvimento de eventos extremos frios no sudeste Sul-Americano, e em particular na região conhecida como Pampa Úmida. O aquecimento anômalo observado na região do oceano Pacífico tropical ocidental a nordeste da Austrália, durante os invernos de máxima freqüência de ocorrência de Geadas Generalizadas (GG) no centro-leste da Argentina, (região conhecida como Pampa Úmida - PU), atua como disparador de ondas de Rossby, as quais se propagam até o continente, favorecendo assim a ocorrência daqueles evento

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9

Chen, Ge, Xiaoyan Chen, and Chuanchuan Cao. "Divergence and Dispersion of Global Eddy Propagation from Satellite Altimetry." Journal of Physical Oceanography 52, no. 4 (2022): 705–22. http://dx.doi.org/10.1175/jpo-d-21-0122.1.

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Abstract It is well understood that isolated eddies are presumed to propagate westward intrinsically at the speed of the annual baroclinic Rossby wave. This classic description, however, is known to be frequently violated in both propagation speed and its direction in the real ocean. Here, we present a systematic analysis on the divergence of eddy propagation direction (i.e., global pattern of departure from due west) and dispersion of eddy propagation speed (i.e., zonal pattern of departure from Rossby wave phase speed). Our main findings include the following: 1) A global climatological phas

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10

Pang, Bo, and Riyu Lu. "Two Distinct Types of Extratropical Circulation Anomalies Associated with Cold Surges over the South China Sea." Journal of Climate 32, no. 16 (2019): 5069–84. http://dx.doi.org/10.1175/jcli-d-19-0041.1.

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Abstract This study investigated the extratropical circulation anomalies responsible for cold surges over the South China Sea in winter. The surge events were identified by the intensity of northerly winds over 110°–117.5°E along 15°N at 925 hPa. Two distinct patterns of sea level pressure (SLP) anomalies in East Asia were found to have a crucial role in inducing cold surges over the South China Sea. Accordingly, the cold surge events were classified into two types. The first type of cold surge is characterized by a pair of SLP anomalies with positive and negative ones centered over China and

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11

Zhang, Chenning, Asen Grytsai, Oleksandr Evtushevsky, et al. "Rossby Waves in Total Ozone over the Arctic in 2000–2021." Remote Sensing 14, no. 9 (2022): 2192. http://dx.doi.org/10.3390/rs14092192.

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The purpose of this work is to study Rossby wave parameters in total ozone over the Arctic in 2000–2021. We consider the averages in the January–March period, when stratospheric trace gases (including ozone) in sudden stratospheric warming events are strongly disturbed by planetary waves. To characterize the wave parameters, we analyzed ozone data at the latitudes of 50°N (the sub-vortex area), 60°N (the polar vortex edge) and 70°N (inner region of the polar vortex). Total ozone column (TOC) measurements over a 22-year time interval were used from the Total Ozone Mapping Spectrometer/Earth Pro

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12

Herrera Cervantes, Hugo, and Alejandro Parés Sierra. "Propagación de variaciones de baja frecuencia en la temperatura superficial del Pacífico nor-oriental." Geofísica Internacional 33, no. 3 (1994): 469–86. http://dx.doi.org/10.22201/igeof.00167169p.1994.33.3.1184.

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Se estudia la propagación de señales de baja frecuencia en ocho años de datos (1982-1989) de Temperatura Superficial del Mar (TSM) en el noreste del Océano Pacífico. El análisis de las observaciones muestra que la variabilidad interanual de la TSM está asociada con la presencia de El Niño. Este se manifiesta como un frente paralelo a la costa así como una intrusión de agua más caliente que el promedio proveniente del océano interior. La primera eigenfunción (61%) está asociada con la presencia de El Niño en la costa en su fase madura y con su decaimiento en forma de señal que se propaga hacia

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13

Mitruev, Bembya L., та Zhargal D. Dugdanov. "Гадание, опирающееся на ламу Цонкапу". Монголоведение (Монгол судлал) 12, № 1 (2020): 105–21. http://dx.doi.org/10.22162/2500-1523-2020-1-105-121.

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Introduction. Rosary divinations used to be most widespread in Tibet, Mongolia, Buryatia, Kalmykia and other Buddhist regions. Various types of this divination include ones implying appeals to Yidam deities, Buddhist protector deities, and prominent spiritual teachers. The latter are rare enough, and such rosary divinations are of particular interest. Goals. The article introduces into scientific discourse a Tibetan text of the Lama Tsongkhapa rosary divination. This is an example of divination text based on a religious figure. Materials. The rosary divination text was received from Rev. Zharg

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14

Varniere, P., F. H. Vincent, and F. Casse. "Living on the edge: Rossby wave instability and HFQPOs in black hole binaries." Astronomy & Astrophysics 638 (June 2020): A33. http://dx.doi.org/10.1051/0004-6361/202037816.

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Context. The Rossby wave instability (RWI) has been proposed to explain the origin of the high-frequency quasi-periodic oscillations observed in the X-ray emission of astrophysical systems harbouring black holes. Recent numerical computations have proven that the RWI does exist in a general relativistic context and that its presence is associated with a time-variable X-ray emission from the disc. Aims. Using our new Numerical Observatory of Violent Accreting system, NOVAs, we explore the way the RWI impacts an accretion disc orbiting a spinning black hole under realistic astrophysical conditio

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15

Suhas, E., J. M. Neena, and Xianan Jiang. "Exploring the Factors Influencing the Strength and Variability of Convectively Coupled Mixed Rossby–Gravity Waves." Journal of Climate 33, no. 22 (2020): 9705–19. http://dx.doi.org/10.1175/jcli-d-20-0218.1.

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AbstractThe three-dimensional structure, horizontal and vertical propagation characteristics, and convection–circulation coupling of the convectively coupled westward-propagating mixed Rossby–gravity (MRG) waves are examined by classifying the waves based on their amplitude. Convective signals of the MRG waves were identified and isolated using empirical orthogonal function analysis of wavenumber–frequency-filtered outgoing longwave radiation (OLR) data. It was found that about 50% of the MRG waves occur during the August–November months, and this strong seasonality was considered while charac

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16

Damiani, C., R. H. Cameron, A. C. Birch, and L. Gizon. "Rossby modes in slowly rotating stars: depth dependence in distorted polytropes with uniform rotation." Astronomy & Astrophysics 637 (May 2020): A65. http://dx.doi.org/10.1051/0004-6361/201936251.

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Context. Large-scale Rossby waves have recently been discovered based on measurements of horizontal surface and near-surface solar flows. Aims. We are interested in understanding why it is only equatorial modes that are observed and in modelling the radial structure of the observed modes. To this aim, we have characterised the radial eigenfunctions of r modes for slowly rotating polytropes in uniform rotation. Methods. We followed Provost et al. (1981, A&A, 94, 126) and considered a linear perturbation theory to describe quasi-toroidal stellar adiabatic oscillations in the inviscid case. W

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17

Brun, Allan Sacha, Antoine Strugarek, Quentin Noraz, et al. "Powering Stellar Magnetism: Energy Transfers in Cyclic Dynamos of Sun-like Stars." Astrophysical Journal 926, no. 1 (2022): 21. http://dx.doi.org/10.3847/1538-4357/ac469b.

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Abstract We use the anelastic spherical harmonic code to model the convective dynamo of solar-type stars. Based on a series of 15 3D MHD simulations spanning four bins in rotation and mass, we show what mechanisms are at work in these stellar dynamos with and without magnetic cycles and how global stellar parameters affect the outcome. We also derive scaling laws for the differential rotation and magnetic field based on these simulations. We find a weaker trend between differential rotation and stellar rotation rate, ( Δ Ω ∝ ( ∣ Ω ∣ / Ω ⊙ ) 0.46 ) in the MHD solutions than in their HD counterp

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18

Sakaeda, Naoko, and Paul E. Roundy. "The Development of Upper-Tropospheric Wind over the Western Hemisphere in Association with MJO Convective Initiation." Journal of the Atmospheric Sciences 72, no. 8 (2015): 3138–60. http://dx.doi.org/10.1175/jas-d-14-0293.1.

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Abstract This study examines the structure and driving mechanisms of upper-tropospheric intraseasonal zonal wind anomalies over the Western Hemisphere (WH) during the convective initiation of the Madden–Julian oscillation (MJO) over the Indian Ocean using composite and budget analyses. The initiating MJO convection is more often associated with WH upper-tropospheric intraseasonal easterly wind anomalies, and when it is, it tends to develop a stronger and zonally broader envelope of enhanced convection than events associated with westerly wind anomalies. The WH upper-tropospheric zonal wind ano

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19

Shiogama, Hideo, Toru Terao, Hideji Kida, and Tatsuya Iwashima. "Roles of Low- and High-Frequency Eddies in the Transitional Process of the Southern Hemisphere Annular Mode." Journal of Climate 18, no. 6 (2005): 782–94. http://dx.doi.org/10.1175/jcli-3303.1.

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Abstract The effects of low- and high-frequency eddies (time scales longer and shorter than 10 days, respectively) on the transitional processes of the Southern Hemisphere “Annular Mode” are investigated, based on NCEP–NCAR daily reanalysis data for the period 1979–2001. Special attention is focused on the zonal symmetry/asymmetry and the temporal evolution of the eddy forcing. For the poleward transitional process, the effects of low-frequency eddies precede those of high-frequency eddies in driving the jet transition. Quasi-stationary Rossby waves propagating along the polar jet with wavelen

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20

Ripa, P. "On the stability of elliptical vortex solutions of the shallow-water equations." Journal of Fluid Mechanics 183 (October 1987): 343–63. http://dx.doi.org/10.1017/s0022112087002660.

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The one-layer reduced gravity (or ‘shallow water’) equations in the f-plane have solutions such that the active layer is horizontally bounded by an ellipse that rotates steadily. In a frame where the height contours are stationary, fluid particles move along similar ellipses with the same revolution period. Both motions (translation along an elliptical path and precession of that orbit) are anticyclonic and their frequencies are not independent; a Rossby number (R0) based on the combination of both of them is bounded by unity. These solutions may be taken, with some optimism, as a model of oce

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21

Balk, A. M. "The Rossby wave extra invariant in the dynamics of 3-D fluid layers and the generation of zonal jets." Nonlinear Processes in Geophysics 21, no. 1 (2014): 49–59. http://dx.doi.org/10.5194/npg-21-49-2014.

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Abstract. We consider an adiabatic-type (approximate) invariant that was earlier obtained for the quasi-geostrophic equation and the shallow water system; it is an extra invariant, in addition to the standard ones (energy, enstrophy, momentum), and it is based on the Rossby waves. The presence of this invariant implies the energy transfer from small-scale eddies to large-scale zonal jets. We show that this extra invariant can be extended to the dynamics of a three-dimensional (3-D) fluid layer on the beta plane. Combined with the investigation of other researchers, this 3-D extension implies e

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Rostovskaya, Tamara, Vladimir Arkhangelskiy, and Elena Pismennaya. "Historical fertility trends in the Baltic countries and Russia." OOO "Zhurnal "Voprosy Istorii" 2022, no. 5-1 (2022): 31–47. http://dx.doi.org/10.31166/voprosyistorii202205statyi18.

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The article analyzes the dynamics of the total fertility rate in the Baltic countries (Latvia, Lithuania, Estonia) in comparison with Russia, Belarus and Ukraine for the period from 1960 to 2020. The birth rate in these countries, its change is considered in comparison with other countries, primarily European ones. Particular attention is paid to the period of increasing the birth rate in the 1980s, largely associated with the implementation of measures to help families with children, the 1990s, when there was a serious transformation of reproductive behavior and, accordingly, the birth rate d

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Eden, Carsten, Manita Chouksey, and Dirk Olbers. "Gravity Wave Emission by Shear Instability." Journal of Physical Oceanography 49, no. 9 (2019): 2393–406. http://dx.doi.org/10.1175/jpo-d-19-0029.1.

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AbstractGravity wave emission by geostrophically balanced flow is diagnosed in numerical simulations of lateral and vertical shear instabilities. The diagnostic method in use allows for a separation of balanced flow and residual wave signal up to fourth order in the Rossby number (Ro). While evidence is found for a small but finite gravity wave emission from balanced flow in a single-layer model with large lateral shear and large Ro, a vertically resolved model with moderate velocity amplitudes appropriate to the interior ocean hardly shows any wave emission. Only when static instabilities gen

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Willamo, T., J. J. Lehtinen, T. Hackman, et al. "Zeeman-Doppler imaging of five young solar-type stars." Astronomy & Astrophysics 659 (March 2022): A71. http://dx.doi.org/10.1051/0004-6361/202141649.

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Context. The magnetic activity of the Sun changes with the solar cycle. Similar cycles are found in other stars as well, but their details are not known to a similar degree. Characterising stellar magnetic cycles is important for the understanding of the stellar and solar dynamos that are driving the magnetic activity. Aims. We present spectropolarimetric observations of five young, solar-type stars and compare them to previous observations, with the aim to identify and characterise stellar equivalents of the solar cycle. Methods. We use Zeeman-Doppler imaging (ZDI) to map the surface magnetic

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25

Auad, Guillermo, and Alejandro Parés Sierra. "Mean flow stability in a model of the eastern North Pacific Ocean." Geofísica Internacional 37, no. 2 (1998): 113–26. http://dx.doi.org/10.22201/igeof.00167169p.1998.37.2.400.

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Datos de estratificación y corriente media de un modelo cuasigeostrófico de ocho capas de la Corriente de California son usados para resolver el problema de estabilidad lineal asociado. Se obtiene, al resolver un problema de autovalores complejos la frecuencia, rapidez de fase, velocidad de grupo, razón de crecimiento y estructura vertical. Se corren siete experimentos para estudiar la influencia de las diferentes condiciones de frontera (fondo plano o inclinado), dirección media de la corriente, amplitud, latitud y mecanismos de fricción en las características de las ondas de Rossby. Usando v

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Sirven, Jérôme, Christophe Herbaut, Julie Deshayes, and Claude Frankignoul. "Origin of the Annual to Decadal Peaks of Variability in the Response of Simple Ocean Models to Stochastic Forcing." Journal of Physical Oceanography 37, no. 8 (2007): 2146–57. http://dx.doi.org/10.1175/jpo3095.1.

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Abstract The response of the ocean to stochastic forcings is studied in a closed basin, using a simple one-dimensional analytical model. The focus is on the mechanisms that determine the time scales of the response and their possible links with free basin modes. The response may be described as a forced solution plus propagating solutions whose spatial pattern does not depend on the forcing. The propagating solutions are of two types. The first ones propagate eastward and are strongly damped so that their influence remains limited to the western boundary layer. The others are damped long Rossb

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Kamareddine, Fairouz, and Rob Nederpelt. "Refining reduction in the lambda calculus." Journal of Functional Programming 5, no. 4 (1995): 637–51. http://dx.doi.org/10.1017/s0956796800001507.

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AbstractWe introduce a λ-calculus notation which enables us to detect in a term, more β-redexes than in the usual notation. On this basis, we define an extended β-reduction which is yet a subrelation of conversion. The Church Rosser property holds for this extended reduction. Moreover, we show that we can transform generalised redexes into usual ones by a process called ‘term reshuffling’.

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Huck, Thierry, Olivier Arzel, and Florian Sévellec. "Multidecadal Variability of the Overturning Circulation in Presence of Eddy Turbulence." Journal of Physical Oceanography 45, no. 1 (2015): 157–73. http://dx.doi.org/10.1175/jpo-d-14-0114.1.

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AbstractAt low-resolution, idealized ocean circulation models forced by prescribed differential surface heat fluxes show spontaneous multidecadal variability depending critically on eddy diffusivity coefficients. The existence of this critical threshold in the range of observational estimates legitimates some doubt on the relevance of such intrinsic oscillations in the real ocean. Through a series of numerical simulations with increasing resolution up to eddy-resolving ones (10 km) and various diapycnal diffusivities, this multidecadal variability proves a generic ubiquitous feature, at least

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Perret, Gaële, Thomas Dubos, and Alexandre Stegner. "How Large-Scale and Cyclogeostrophic Barotropic Instabilities Favor the Formation of Anticyclonic Vortices in the Ocean." Journal of Physical Oceanography 41, no. 2 (2011): 303–28. http://dx.doi.org/10.1175/2010jpo4362.1.

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Abstract Large-scale vortices, that is, eddies whose characteristic length scale is larger than the local Rossby radius of deformation Rd, are ubiquitous in the oceans, with anticyclonic vortices more prevalent than cyclonic ones. Stability or robustness properties of already formed shallow-water vortices have been investigated to explain this cyclone–anticyclone asymmetry. Here the focus is on possible asymmetries during the generation of vortices through barotropic instability of a parallel flow. The initial stage and the nonlinear stage of the instability are studied by means of linear stab

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González, Ricardo. "Imágenes y retablos de las cofradías de Buenos Aires colonial." Sztuka Ameryki Łacińskiej 4, no. 1 (2014): 13–59. http://dx.doi.org/10.15804/sal201401.

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The article concerns the issue of religious fraternities in colonial Buenos Aires: their existence and functioning as well as their influence on church furnishing in the region. Discussion begins with a short description of fraternities as religious institutions with emphasis placed on their social and culture-forming aspect. The article then presents a historical outline of the fraternities functioning in Buenos Aires: from the first ones, which appeared as early as in the late 16th century (Fraternity of Our Lady of the Rosary, 1586), to the late colonial ones originating from the 19th centu

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Yasuda, Yuki, Kaoru Sato, and Norihiko Sugimoto. "A Theoretical Study on the Spontaneous Radiation of Inertia–Gravity Waves Using the Renormalization Group Method. Part II: Verification of the Theoretical Equations by Numerical Simulation." Journal of the Atmospheric Sciences 72, no. 3 (2015): 984–1009. http://dx.doi.org/10.1175/jas-d-13-0371.1.

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Abstract The renormalization group equations (RGEs) describing spontaneous inertia–gravity wave (GW) radiation from part of a balanced flow through a quasi resonance that were derived in a companion paper by Yasuda et al. are validated through numerical simulations of the vortex dipole using the Japan Meteorological Agency nonhydrostatic model (JMA-NHM). The RGEs are integrated for two vortical flow fields: the first is the initial condition that does not contain GWs used for the JMA-NHM simulations, and the second is the simulated thirtieth-day field by the JMA-NHM. The theoretically obtained

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Rastello, Marie, Jean-Louis Marié, and Michel Lance. "Clean versus contaminated bubbles in a solid-body rotating flow." Journal of Fluid Mechanics 831 (October 13, 2017): 592–617. http://dx.doi.org/10.1017/jfm.2017.624.

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The behaviour of clean and contaminated bubbles in solid-body rotating flows is compared in terms of drag and lift forces. Both spherical and deformed bubbles are considered. For that comparison, we have completed the data published in Rastello et al. (J. Fluid Mech., vol. 624, 2009, pp. 159–178; J. Fluid Mech., vol. 682, 2011, pp. 434–459) by a new series of measurements. When they are contaminated, bubbles are subject to an additional lift force due to the spinning of their surfaces, while the clean ones are not. A detailed description of this spinning motion is presented and an expression f

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Lin, Jia-Lin, George N. Kiladis, Brian E. Mapes, et al. "Tropical Intraseasonal Variability in 14 IPCC AR4 Climate Models. Part I: Convective Signals." Journal of Climate 19, no. 12 (2006): 2665–90. http://dx.doi.org/10.1175/jcli3735.1.

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Abstract This study evaluates the tropical intraseasonal variability, especially the fidelity of Madden–Julian oscillation (MJO) simulations, in 14 coupled general circulation models (GCMs) participating in the Intergovernmental Panel on Climate Change (IPCC) Fourth Assessment Report (AR4). Eight years of daily precipitation from each model’s twentieth-century climate simulation are analyzed and compared with daily satellite-retrieved precipitation. Space–time spectral analysis is used to obtain the variance and phase speed of dominant convectively coupled equatorial waves, including the MJO,

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Fu, Xiouhua, Wanqiu Wang, June-Yi Lee, et al. "Distinctive Roles of Air–Sea Coupling on Different MJO Events: A New Perspective Revealed from the DYNAMO/CINDY Field Campaign*." Monthly Weather Review 143, no. 3 (2015): 794–812. http://dx.doi.org/10.1175/mwr-d-14-00221.1.

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Abstract Previous observational analysis and modeling studies indicate that air–sea coupling plays an essential role in improving MJO simulations and extending MJO forecasting skills. However, whether the SST feedback plays an indispensable role for the existence of the MJO remains controversial, and the precise physical processes through which the SST feedback may lead to better MJO simulations and forecasts remain elusive. The DYNAMO/Cooperative Indian Ocean Experiment on Intraseasonal Variability in the Year 2011 (CINDY) field campaign recently completed over the Indian Ocean reveals a new

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Barrera-Oro, E. R., and R. J. Casaux. "Age estimation for juvenile Notothenia rossii from Potter Cove, South Shetland Islands." Antarctic Science 4, no. 2 (1992): 131–36. http://dx.doi.org/10.1017/s095410209200021x.

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Scales and whole otoliths were used for age estimation of juvenile Notothenia rossii specimens collected at Potter Cove, King George Island, South Shetland Islands, between 1983 and 1988. Results from the analysis of both types of material showed 96.7% agreement. Likewise, the examination of otolith cross sections of chosen specimens confirmed in all the cases the age readings obtained from the second whole sagittal otolith. Although the commonly accepted 1 July was used as the birth date of the fish for age calculations, data indicate that 1 October is closer to the biological birth date, sin

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Rzepecka, Marta. "Marta Rzepecka: Archiwum kapituły i parafii Opatów." Archiwa, Biblioteki i Muzea Kościelne 93 (April 21, 2021): 259–77. http://dx.doi.org/10.31743/abmk.12529.

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The aim of the following article is to present and analyse the collection of the Chapter and Parish Archive in Opatów. The Opatów chapter, existing for over eight centuries, is one of the oldest Polish collegiate chapters. The canons of Opatów produced a great number of records, which constitute an important source for the regional history. Unfortunately, through the centuries the documents of this archive have been depleted due to numerous wars, partitions, church fires and because of borrowing of these documents.The author concentrates on the archival sources ffom the Chapter and Parish Arch

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Ubelmann, Clement, and Lee-Lueng Fu. "Vorticity Structures in the Tropical Pacific from a Numerical Simulation." Journal of Physical Oceanography 41, no. 8 (2011): 1455–64. http://dx.doi.org/10.1175/2011jpo4507.1.

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Abstract The small-scale variability of the tropical Pacific is studied with the simulations from a numerical model in terms of vorticity structures. A Lagrangian method based on the Okubo–Weiss parameter is used to identify the structures and track their main characteristics. Between 8°S and 8°N, the structure characteristics are spatially inhomogeneous compared to higher latitudes. They can be grouped into three categories: anticyclonic and cyclonic structures off the equator and the equatorial structures between 2°S and 2°N. They all have a strong annual cycle with maximum presence from Sep

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Abdillah, Muhammad Rais, Yuki Kanno, and Toshiki Iwasaki. "Tropical–Extratropical Interactions Associated with East Asian Cold Air Outbreaks. Part I: Interannual Variability." Journal of Climate 30, no. 8 (2017): 2989–3007. http://dx.doi.org/10.1175/jcli-d-16-0152.1.

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Interannual variability of winter-mean East Asian cold air outbreaks (CAOs) and its relationship with the tropical climate system during 56 boreal winters (DJF) are investigated. The magnitude of CAO is quantified as winter-mean equatorward cold airmass (CAM) flux below 280-K potential temperature across the 45°N latitude. EOF analysis shows that the interannual variation of East Asian CAOs is attributed mainly to the contributions from western and eastern CAOs. In particular, the western and eastern CAOs tend to be remotely forced by La Niña and El Niño events, respectively. The western and e

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Broomé, Sara, and Johan Nilsson. "Stationary Sea Surface Height Anomalies in Cyclonic Boundary Currents: Conservation of Potential Vorticity and Deviations from Strict Topographic Steering." Journal of Physical Oceanography 46, no. 8 (2016): 2437–56. http://dx.doi.org/10.1175/jpo-d-15-0219.1.

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AbstractIn high-latitude subpolar seas, such as the Nordic seas and the Labrador Sea, time-mean geostrophic currents mediate the bulk of the meridional oceanic heat transport. These currents are primarily encountered along the continental slopes as intense cyclonic boundary currents, which, because of the relatively weak stratification, should be strongly steered by the bottom topography. However, analyses of hydrographic and satellite altimetric data along depth contours in Nordic seas boundary currents reveal some remarkable, stationary, along-stream variations in the depth-integrated buoyan

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Jin, Xin, Changming Dong, Jaison Kurian, James C. McWilliams, Dudley B. Chelton, and Zhijin Li. "SST–Wind Interaction in Coastal Upwelling: Oceanic Simulation with Empirical Coupling." Journal of Physical Oceanography 39, no. 11 (2009): 2957–70. http://dx.doi.org/10.1175/2009jpo4205.1.

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Abstract Observations, primarily from satellites, have shown a statistical relationship between the surface wind stress and underlying sea surface temperature (SST) on intermediate space and time scales, in many regions inclusive of eastern boundary upwelling current systems. In this paper, this empirical SST–wind stress relationship is utilized to provide a simple representation of mesoscale air–sea coupling for an oceanic model forced by surface winds, namely, the Regional Oceanic Modeling System (ROMS). This model formulation is applied to an idealized upwelling problem with prevailing equa

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Dong, Changming, James C. McWilliams, and Alexander F. Shchepetkin. "Island Wakes in Deep Water." Journal of Physical Oceanography 37, no. 4 (2007): 962–81. http://dx.doi.org/10.1175/jpo3047.1.

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Abstract Density stratification and planetary rotation distinguish three-dimensional island wakes significantly from a classical fluid dynamical flow around an obstacle. A numerical model is used to study the formation and evolution of flow around an idealized island in deep water (i.e., with vertical island sides and surface-intensified stratification and upstream flow), focusing on wake instability, coherent vortex formation, and mesoscale and submesoscale eddy activity. In a baseline experiment with strong vorticity generation at the island, three types of instability are evident: centrifug

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Tuchen, Franz Philip, Peter Brandt, Martin Claus, and Rebecca Hummels. "Deep Intraseasonal Variability in the Central Equatorial Atlantic." Journal of Physical Oceanography 48, no. 12 (2018): 2851–65. http://dx.doi.org/10.1175/jpo-d-18-0059.1.

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AbstractBesides the zonal flow that dominates the seasonal and long-term variability in the equatorial Atlantic, energetic intraseasonal meridional velocity fluctuations are observed in large parts of the water column. We use 15 years of partly full-depth velocity data from an equatorial mooring at 23°W to investigate intraseasonal variability and specifically the downward propagation of intraseasonal energy from the near-surface into the deep ocean. Between 20 and 50 m, intraseasonal variability at 23°W peaks at periods between 30 and 40 days. It is associated with westward-propagating tropic

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Evdokimov, V. I., E. V. Bobrinev, A. A. Kondashov, and N. A. Pankratov. "Pokazateli proizvodstvennogo travmatizma lichnogo sostava operativnykh podrazdelenii MChS Rossii za 10 let (2012–2021 gg.)." Medicо-Biological and Socio-Psychological Problems of Safety in Emergency Situations, no. 2 (August 2, 2022): 5–21. http://dx.doi.org/10.25016/2541-7487-2022-0-2-5-21.

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Relevance. The extreme conditions of activity of the personnel of operational units of the EMERCOM of Russia, carrying out duty for urgent mitigation of consequences of accidents, disasters, fires and other emergency situations (ES), likely cause excessive consumption of the body functional reserves, occurrence of erroneous actions, injuries and even death.Intention is to analyze rates of occupational injuries in personnel of operational units of the EMERCOM of Russia for 10 years (2012–2021).Methodology. Indicators of injuries among personnel (military personnel, employees with special ranks,

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Nicholl, Grier. "The Life Review in Five Short Stories about Characters Facing Death." OMEGA - Journal of Death and Dying 15, no. 1 (1985): 85–96. http://dx.doi.org/10.2190/ue3p-4cel-3t2q-1kl7.

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Five modern short stories about people facing death illustrate and connect various observations of and theories about the dying process developed by Elisabeth Kubler-Ross and Robert N. Butler. Kubler-Ross's observations of the fifth stage of the dying process–acceptance–are illustrated in the dying characters' desire to withdraw from their loved ones and to be left alone. Butler's concept of the life review is then applicable. In response to the imminence of their deaths, the characters survey their past, attempting to reintegrate their life's experiences. Their life reviews do not become a fo

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Evans, Raymond. "Ross Donald Laurie (1960–2010): An Appreciation." Queensland Review 17, no. 2 (2010): 1–8. http://dx.doi.org/10.1017/s1321816600005389.

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I do not approach writing this essay with any relish. In fact, I have consistently and resolutely been putting it off, secretly relieved when the bulk of Ross's own writings took a while to reach me and even when the retina in my left eye came away, obviating any chance of my getting down to work for several more months. The year 2010 has been a painful one. My close colleague, Bill Thorpe, died just before it began and during the year I lost two other long-tenn female friends. This all comes, they say, with the territory of ageing. Either you go yourself, knocked down somewhere in the valley

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Moraes da Silva, Ana Carolina. "Figurações do duplo em Dona flor e seus dois maridos (1966) de Jorge Amado." Brumal. Revista de investigación sobre lo Fantástico 11, no. 1 (2023): 313–28. http://dx.doi.org/10.5565/rev/brumal.893.

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O duplo há muito tempo está presente na literatura, passando a ser mais recorrente a partir do século XVIII, no Romantismo. E, por estar na literatura das mais variadas formas, trazendo os mais diversos significados, o duplo proporcionou e proporciona, consequentemente, inúmeros estudos. Este artigo é resultado de uma pesquisa que teve por objetivo principal a realização da análise interpretativa do duplo, sob a perspectiva da literatura fantástica, na obra do escritor Jorge Amado, Dona Flor e seus dois maridos (1966). Como fundamentação teórica, citamos: Juan Herrero Cecília (2000, 2011), Sig

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Oruba, Ludivine, Guillaume Lapeyre, and Gwendal Rivière. "On the Poleward Motion of Midlatitude Cyclones in a Baroclinic Meandering Jet." Journal of the Atmospheric Sciences 70, no. 8 (2013): 2629–49. http://dx.doi.org/10.1175/jas-d-12-0341.1.

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Abstract The motion of surface depressions evolving in a background meandering baroclinic jet is investigated using a two-layer quasigeostrophic model on a beta plane. Synoptic-scale finite-amplitude cyclones are initialized in the lower and upper layer to the south of the jet in a configuration favorable to their baroclinic interaction. The lower-layer cyclone is shown to move across the jet axis from its warm-air to cold-air side. It is the presence of a poleward-oriented barotropic potential vorticity (PV) gradient that makes possible the cross-jet motion through the beta-drift mechanism ge

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Miller, Timothy L., and Nathaniel D. Reynolds. "A study of baroclinic instability in a cylindrical annulus with the temperature gradient imposed on the lower surface." Journal of Fluid Mechanics 233 (December 1991): 495–518. http://dx.doi.org/10.1017/s0022112091000575.

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Laboratory experiments and numerical modelling studies have been performed for a rotating, thermally driven fluid system in a cylindrical annulus with a vertical rotation vector and axis of symmetry. The thermal forcing was through the imposition of an axisymmetric temperature gradient on a thermally conducting lower boundary, with additional heating through the outer sidewall. The upper and inner walls were nominally insulating. Flow patterns were observed in the experiments through the use of small, reflective flakes (Kalliroscope) in the working fluid, which was water. The rotation rate and

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Diacogiannis, George, and David Feldman. "Linear Beta Pricing with Inefficient Benchmarks." Quarterly Journal of Finance 03, no. 01 (2013): 1350004. http://dx.doi.org/10.1142/s2010139213500043.

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Current asset pricing models require mean-variance efficient benchmarks, which are generally unavailable because of partial securitization and free float restrictions. We provide a pricing model that uses inefficient benchmarks, a two-beta model, one induced by the benchmark and one adjusting for its inefficiency. While efficient benchmarks induce zero-beta portfolios of the same expected return, any inefficient benchmark induces infinitely many zero-beta portfolios at all expected returns. These make market risk premiums empirically unidentifiable and explain empirically found dead betas and

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HURKA, THOMAS. "Sidgwick on Consequentialism and Deontology: A Critique." Utilitas 26, no. 2 (2014): 129–52. http://dx.doi.org/10.1017/s0953820814000089.

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In The Methods of Ethics Henry Sidgwick argued against deontology and for consequentialism. More specifically, he stated four conditions for self-evident moral truth and argued that, whereas no deontological principles satisfy all four conditions, the principles that generate consequentialism do. This article argues that both his critique of deontology and his defence of consequentialism fail, largely for the same reason: that he did not clearly grasp the concept W. D. Ross later introduced of a prima facie duty or duty other things equal. The moderate deontology Ross's concept allows avoids m

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