5,802 Hits in 8.5 sec

Solar, Supernova, and Atmospheric Neutrinos [article]

A.B. Balantekin (Department of Physics, University of Wisconsin, Madison, WI, USA) and W.C. Haxton (Institute for Nuclear Theory, and Department of Physics, University of Washington, Seattle, WA, USA)
1999 arXiv   pre-print
In these Canberra summer school lectures we treat a number of topical issues in neutrino astrophysics: the solar neutrino problem, including the physics of the standard solar model, helioseismology, and  ...  as a test of new particle astrophysics; the supernova mechanism; spin-flavor oscillations and oscillations into sterile states, including the effects of density fluctuations; and neutrino-induced and explosive  ...  There is a natural extension of this model to weak interactions, where axial excitations occur.  ... 
arXiv:nucl-th/9903038v1 fatcat:wwlrvcrjzfdbtng6sjjmqg62ka

ELF and VLF radio waves

R. Barr, D.Llanwyn Jones, C.J. Rodger
2000 Journal of Atmospheric and Solar-Terrestrial Physics  
This review covers developments in ELF and VLF radio-wave propagation research over the last 50 years of the Journal of Atmospheric and Solar-Terrestrial Physics.  ...  The review concludes with a brief summary of the VLF navigation systems of the USSR and USA, (Alpha and Omega) whose development and life-span covered most of the last 50 years.  ...  Wait (1960) presented a theoretical model of the generation and propagation of slow tail sferics in terms of the waveguide mode theory and re-analyzed the data of Hepburn (1957a) .  ... 
doi:10.1016/s1364-6826(00)00121-8 fatcat:dxibnfg3wrgr3j5qqxmhib2ngi

Simplified metrics for the identification of the Madden-Julian oscillation in models

Kenneth R. Sperber, Daehyun Kim
2012 Atmospheric Science Letters  
We propose simplified metrics to evaluate the fidelity with which the Madden-Julian oscillation (MJO) is simulated in climate models.  ...  The simplified MJO metrics, the maximum positive correlation and time lag at which it occurs, provide consistent information relative to more complex diagnostics developed by the Madden-Julian Oscillation  ...  The authors also thank Dr. D. E. Waliser, former co-chair of the YOTC MJOTF, for his support and encouragement in the development of the simple metrics, and for helpful comments on the revised draft.  ... 
doi:10.1002/asl.378 fatcat:m3wsb7plqrgbzp4mgaj5dji7uu

The global electrical circuit: A review

Earle R. Williams
2009 Atmospheric research  
for the global circuit, the electrical contribution of mesoscale convective systems, the possible effect of thunderstorms on the E and F regions of the ionosphere, the evidence for a global circuit impact  ...  These topics include the diurnal variation of the global circuit, surface measurements of electric field at high latitude, the annual variation, the semiannual variation, the role of lightning as a source  ...  According to the model calculations, if all the "trees" in the model are removed, the field at the measurement location PG1 is E o .  ... 
doi:10.1016/j.atmosres.2008.05.018 fatcat:fmfvb3lpmjhfljewxkbeycprhi

Gravity wave dynamics and effects in the middle atmosphere

David C. Fritts
2003 Reviews of Geophysics  
Progress includes a better appreciation of gravity wave sources and characteristics, the evolution of the gravity wave spectrum with altitude and with variations of wind and stability, the character and  ...  1] Atmospheric gravity waves have been a subject of intense research activity in recent years because of their myriad effects and their major contributions to atmospheric circulation, structure, and variability  ...  Indeed, such a survey is beyond our current state of knowledge based on the extensive theoretical, modeling, and observational efforts to date.  ... 
doi:10.1029/2001rg000106 fatcat:w4pmmt72jzazxci7boasnbi6gq

An Exploration of Multivariate Fluctuation Dissipation Operators and Their Response to Sea Surface Temperature Perturbations

David Fuchs, Steven Sherwood, Daniel Hernandez
2015 Journal of the Atmospheric Sciences  
The fluctuation-dissipation theorem (FDT) has been proposed as a method of calculating the mean response of the atmosphere to small external perturbations.  ...  It is shown that the skill of the operator depends on the selection of variables and features representing the climate system and that these features change once memory (slab ocean) is added to the system  ...  Phipps for his assistance and countless discussions concerning the Mk3L model.  ... 
doi:10.1175/jas-d-14-0077.1 fatcat:4z6u7zdrpzdthfa42pcvirmz3y

Footprint modeling for vegetation atmosphere exchange studies: a review and perspective

Hans Peter Schmid
2002 Agricultural and Forest Meteorology  
Finally, a perspective on the current state-of-the-art of footprint modeling is offered, with a list of challenges and suggestions for future directions.  ...  The second main objective of this paper is to establish a formal connection between micrometeorological measurements of scalar fluxes and their mass conservation equation, in a surface-vegetation-atmosphere  ...  DE-FC03-90ER61010) and by a grant from the Terrestrial Carbon Processes program of US-DOE (through a subcontract from Harvard University).  ... 
doi:10.1016/s0168-1923(02)00107-7 fatcat:tsup6ouxurgolcnbi43hjuok4e

Summer Sea Surface Temperature Conditions in the North Atlantic and Their Impact upon the Atmospheric Circulation in Early Winter

Christophe Cassou, Clara Deser, Laurent Terray, James W. Hurrell, Marie Drévillon
2004 Journal of Climate  
The strength and position of the transients as a function of seasons are hypothesized to be of central importance to explain the nature, timing, and sign of the model response.  ...  , is investigated from data and experiments with the CCM3 atmospheric general circulation model (AGCM).  ...  Chiang, and K. Trenberth for stimulating discussions. The first author is grateful to E. Maisonnave, S. Valcke, and C. Périgaud for their constant support and valuable critiques and to A.  ... 
doi:10.1175/1520-0442(2004)017<3349:ssstci>;2 fatcat:lol54npch5a2hlaotslsghzfyq

Equilibrium Vs. Activation Control of Large-Scale Variations of Tropical Deep Convection [chapter]

Brian E. Mapes
1997 The Physics and Parameterization of Moist Atmospheric Convection  
To represent activation controls, large-scale models need multiple levels, and some prognostic representation of the subgridscale inhomogeneity of low-level fields. 1.A similar balance holds for the tropical  ...  Modulation of convection by easterly waves and upper-tropospheric troughs, and the climatological distribution of convective cloudiness, are examined as examples.  ...  National Oceanic and Atmospheric Administration, and by and the Climate Dynamics Program, Division of Atmospheric Sciences, U.S. National Science Foundation.  ... 
doi:10.1007/978-94-015-8828-7_13 fatcat:ynex7pbs7jfwznmitznx4yyjde

Long-term trends and variability of total and extreme precipitation in Thailand

Atsamon Limsakul, Patama Singhruck
2016 Atmospheric research  
However, this study provides a more detailed picture of coherent trends at a station scale and documents changes that have occurred in the twenty-first century, both of which help to inform decisions concerning  ...  Moreover, the indices measuring the magnitude of intense precipitation events indicate a trend toward wetter conditions, with heavy precipitation contributing a greater fraction to annual totals.  ...  We also extend our thanks to the editor and three anonymous reviewers for their insightful critiques and constructive comments to substantially improve the quality of the earlier version of the manuscript  ... 
doi:10.1016/j.atmosres.2015.10.015 fatcat:42ljkobjpjd6je3r37oiu67qpy

The GFDL Global Atmosphere and Land Model AM4.0/LM4.0: 2. Model Description, Sensitivity Studies, and Tuning Strategies

M. Zhao, J.-C. Golaz, I. M. Held, H. Guo, V. Balaji, R. Benson, J.-H. Chen, X. Chen, L. J. Donner, J. P. Dunne, K. Dunne, J. Durachta (+33 others)
2018 Journal of Advances in Modeling Earth Systems  
In Part 2 of this two-part paper, documentation is provided of key aspects of a version of the AM4.0/LM4.0 atmosphere/land model that will serve as a base for a new set of climate and Earth system models  ...  The quality of the simulation in AMIP (Atmospheric Model Intercomparison Project) mode has been provided in Part 1.  ...  We thank the Program for Climate Model Diagnosis and Intercomparison (PCMDI) and the IPCC Data Archive at the Lawrence Livermore National Laboratory/ Department of Energy (LLNL/DOE) for collecting, archiving  ... 
doi:10.1002/2017ms001209 fatcat:bx5yeesfqrccxjh5lrrp3vv3ta

Post-flight analysis of detailed size distributions of warm cloud droplets, as determined in situ by cloud and aerosol spectrometers

Sorin Nicolae Vâjâiac, Andreea Calcan, Robert Oscar David, Denisa-Elena Moacă, Gabriela Iorga, Trude Storelvmo, Viorel Vulturescu, Valeriu Filip
2021 Atmospheric Measurement Techniques  
It is concluded that, in the presence of high atmospheric loads of hydrophilic and light-absorbing aerosols, such imprecisions may drastically affect the reliability of the cloud data obtained with cloud  ...  The size and number concentration of these cloud droplets control the reflectance of the cloud, the formation of precipitation and ultimately the lifetime of the cloud.  ...  The authors gratefully acknowledge the careful reviewing of the text and the ensuing valuable comments of the referees, with special emphasis on the contribution of Darrel Baumgardner, whose expert critique  ... 
doi:10.5194/amt-14-6777-2021 fatcat:l27lf5cwqvftzm3v52pvx4fizq

Declining CO2 price paths

Kent D. Daniel, Robert B. Litterman, Gernot Wagner
2019 Proceedings of the National Academy of Sciences of the United States of America  
Atmospheric CO2 is the "asset" with a negative expected return.  ...  In contrast to most modeled CO2 price paths, EZ-Climate suggests a high price today that is expected to decline over time as the "insurance" value of mitigation declines and technological change makes  ...  Atmospheric CO 2 is the "asset" with a negative expected return.  ... 
doi:10.1073/pnas.1817444116 fatcat:f74tzikw2jfcjkeqlv3kgvvn4i

Contemporary Management Accounting Practices and Managerial Performance Amongst the Malaysian Co-operatives Sector

Sharul Effendy Janudin, Hazianti Abdul Halim, Nurul Fadly Habidin, Farahaini Mohd Hanif
2019 Research in World Economy  
This research offers a exclusive details investigation of the contemporary MAP and an signal of upcoming trends.  ...  The finding indicates the level of contemporary MAP is high and there is significant relationship between contemporary MAP and managerial performance among Malaysian Co-operatives.  ...  Acknowledgement This paper is based on the research project entitled "The adoption and success of contemporary management accounting practices in the Malaysian Co-operatives Sector".  ... 
doi:10.5430/rwe.v10n5p129 fatcat:fimnt77abrdv3ctxsugxronktm

Is bio-energy carbon capture and storage (BECCS) feasible? The contested authority of integrated assessment modeling

Sean Low, Stefan Schäfer
2020 Energy Research & Social Science  
We engage members of the IAM community and a multidisciplinary range of critical experts to interrogate how the 'feasibility' of BECCS-or other novel technologies-is assessed within modeling, and use '  ...  boundary work' to show how the kind of expertise-and by extension, the authority-held by the IAM community is being challenged.  ...  The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.  ... 
doi:10.1016/j.erss.2019.101326 fatcat:wogzsd3hbjdgbhv64tb7xoyhje
« Previous Showing results 1 — 15 out of 5,802 results