WorldCat Identities

Weaver, Andrew J. (Andrew John) 1961-

Works: 65 works in 97 publications in 2 languages and 2,080 library holdings
Genres: Juvenile works 
Roles: Author, Thesis advisor, Interviewee
Classifications: QC981.8.G56, 551.6971
Publication Timeline
Most widely held works about Andrew J Weaver
Most widely held works by Andrew J Weaver
Hard choices : climate change in Canada by Harold G Coward( Book )

6 editions published between 2004 and 2006 in English and held by 248 WorldCat member libraries worldwide

"Drought, floods, hurricanes, forest fires, ice storms, blackouts, dwindling fish stocks, the "greenhouse" effect ... what Canadian has not wondered what is happening to our climate? This new collection of essays by leading Canadian scientists, engineers, social scientists, and humanists offers an overview and assessment of climate change and its impacts on Canada from physical, social, technological, economic, political, and ethical/religious perspectives. Hard Choices, offers a multidisciplinary approach to the challenges we face in Canada with special attention given to Canada's response to the Kyoto protocol and an assessment of the adequacy of Kyoto as a response to the global challenge of climate change."--Jacket
Generation us : the challenge of global warming by Andrew J Weaver( Book )

8 editions published between 2011 and 2013 in English and held by 158 WorldCat member libraries worldwide

Offers an introduction to the causes and effects of global warming, considers reasons for denying its existence, and discusses the threat it presents for the future and some possible solutions
Keeping our cool : Canada in a warming world by Andrew J Weaver( Book )

4 editions published between 2008 and 2010 in English and held by 129 WorldCat member libraries worldwide

Abrupt climate change : report( Book )

2 editions published in 2008 in English and held by 19 WorldCat member libraries worldwide

Keeping our cool : Canada in a warming world by Andrew J Weaver( )

2 editions published in 2013 in English and held by 17 WorldCat member libraries worldwide

Monster wildfires in Australia, January golfers in PEI, ruined fruit crops in California, starving polar bears in the North. Climate change is no longer a vague threat. Over the next few centuries climate changes will be greater and occur faster than at any time in 10,000 years. Brilliantly researched, Keeping Our Cool is an engaging examination of global warming, with specific emphasis on Canada. Weaver explains the levels of greenhouse gas emissions needed to stabilize the climate and offers solutions and a path toward a sustainable future
Destination discovery : the weather zone : a science teaching kit by Steven Neil Toleikis( Book )

2 editions published between 2005 and 2007 in English and held by 14 WorldCat member libraries worldwide

Handmade science : make a weather station, create a weather network! : discover the secrets of weather by Steven Neil Toleikis( Book )

2 editions published in 2007 in English and held by 11 WorldCat member libraries worldwide

Canada 2050 our future in a changing climate( Recording )

2 editions published in 2009 in English and held by 10 WorldCat member libraries worldwide

In this eye-opening adventure into the near-future, potential global warming effects are examined
Dose intensive chemotherapy in ovarian cancer and the role of stem cell factor by Andrew J Weaver( Book )

4 editions published in 1998 in English and held by 5 WorldCat member libraries worldwide

Numerical and analytical modelling of oceanic/atmospheric processes by Andrew J Weaver( Book )

4 editions published between 1987 and 1988 in English and held by 3 WorldCat member libraries worldwide

Simulation and prediction of North Pacific sea surface temperature by Fabian Lienert( )

1 edition published in 2011 in English and held by 2 WorldCat member libraries worldwide

The first part of this thesis is an assessment of the ability of global climate models to reproduce observed features of the leading Empirical Orthogonal Function (EOF) mode of North Pacific sea surface temperature (SST) anomalies known as the Pacific Decadal Oscillation (PDO). The simulations from 13 global climate models I am analyzing were performed under phase 3 of the coupled model intercomparison project (CMIP3). In particular, I am investigating whether these climate models capture tropical influences on the PDO, and the influences of the PDO on North American surface temperature and precipitation. My results are that 1) the models as group produce a realistic pattern of the PDO. The simulated variance of the PDO index is overestimated by roughly 30%. 2)The tropical influence on North Pacific SSTs is biased systematically in these models. The simulated response to El Nino-Southern Oscillation (ENSO) forcing is delayed compared to the observed response. This tendency is consistent with model biases toward deeper oceanic mixed layers in winter and spring and weaker air-sea feedbacks in the winter half-year. Model biases in mixed layer depths and air-sea feedbacks are also associated with a model mean ENSO-related signal in the North Pacific whose amplitude is overestimated by roughly 30%. Finally, model power spectra of the PDO signal and its ENSO-forced component are?redder? than observed due to errors originating in the tropics and extratropics. 3) The models are quite successful at capturing the influence of both the tropical Pacific related and the extratropical part of the PDO on North American surface temperature. 4) The models capture some of the influence of the PDO on North American precipitation mainly due to its tropical Pacific related part. In the second part of this thesis, I investigate the ability of one such coupled ocean-atmosphere climate model, carefully initialized with observations, to dynamically predict the future evolution of the PDO on seasonal to decadal time scales. I am using forecasts produced by the Canadian climate data assimilation and prediction system employing the Canadian climate model CanCM3 for seasonal (CHFP2) and CanCM4 for decadal (DHFP1) predictions. The skill of this system in predicting the future evolution of the PDO index is then inferred from a set of historical?forecasts? called hindcasts. In this manner, hindcasts are issued over the past 30 years (seasonal), or over the past 50 years (decadal) when they can be verified against the observed historical evolution of the PDO index. I find that 1) CHFP2 is successful at predicting the PDO at the seasonal timescale measured by mean-square skill score and correlation skill. Weather?noise? unpredictable at the seasonal time scale generated by substantial North Pacific stormtrack activity that coincides with a shallow oceanic mixed layer in May and June appear to pose a prediction barrier for the PDO. PDO skill therefore depends on the start season of the forecast. PDO skill also varies as a function of the target month. Variations in North Pacific storminess appear to impact PDO skill by means of a lagged response of the ocean mixed layer to weather noise. In CHFP2, times of increasing North Pacific storm track activity are followed by times of reduced PDO skill, while the North Pacific midwinter suppression of storm track
Simulating the present-day and future distribution of permafrost in the UVic Earth System Climate Model by Christopher Alexander Avis( )

1 edition published in 2012 in English and held by 2 WorldCat member libraries worldwide

Warming over the past century has been greatest in high-latitudes over land and a number of environmental indicators suggest that the Arctic climate system is in the process of a major transition. Given the magnitude of observed and projected changes in the Arctic, it is essential that a better understanding of the characteristics of the Arctic climate system be achieved. In this work, I report on modifications to the UVic Earth System Climate model to allow it to represent regions of perennially-frozen ground, or permafrost. I examine the model's representation of the Arctic climate during the 20th Century and show that it capably represents the distribution and thermal state of permafrost in the present-day climate system. I use Representative Concentration Pathways to examine a range of possible future permafrost states to the year 2500. A suite of sensitivity experiments is used to better understand controls on permafrost. I demonstrate the potential for radical environmental changes in the Arctic over the 21st Century including continued warming, enhanced precipitation and a reduction of between 29 and 54 % of the present-day permafrost area by 2100. Model projections show that widespread loss of high-latitude wetlands may accompany the loss of near surface permafrost
Nodal configurations and voronoi tessellations for triangular spectral elements by Michael James Roth( Book )

1 edition published in 2005 in English and held by 2 WorldCat member libraries worldwide

Rapid Reads: Generation Us by Andrew J Weaver( Book )

1 edition published in 2011 in English and held by 2 WorldCat member libraries worldwide

Snowball Earth : sensitivity to sea ice and surface albedo by Jeffrey Philip Lewis( Book )

1 edition published in 2007 in English and held by 2 WorldCat member libraries worldwide

The snowball Earth theory, that low-latitude continents became glaciated after sea ice extended from the poles to the equator during the Neoproterozoic (1000 - 545 Ma), has sparked a flood of numerical modelling studies investigating all phases of the proposed extreme climatic cycle. Modelling studies have both supported and refuted the original 'hard' snowball theory, as well as offered alternative theories such as the 'soft' snowball theory, where glaciers covered all land masses but sea ice did not extend equatorward of -25? latitude. Presented here are a number of sensitivity studies investigating the effects of different sea ice models on snowball inception and how large ranges in accepted albedo values affect the amount of radiative forcing required for deglaciation. These experiments shed light on disparities between previous modelling results. This study demonstrates the importance of a sea ice component's thermodynamic formulation by comparing the physically complete thermodynamic sea ice model in the UVic Earth System Climate Model to an incomplete sea ice model used in an early version of the Fast Ocean Atmosphere Model. As well as the importance of a sound thermodynamic sea ice model is the inclusion of sea ice dynamics. Sea ice dynamics have not previously been included in snowball simulations and their inclusion suggests that the alternative 'soft' snowball theory may not be plausible. With a purely thermodynamic sea ice component. the 'soft' snowball state is stable whereas with the inclusion of sea ice dynamics it is not. Also gained from this study was the influence of wind speed on the level of CO2 required to produce a hard snowball solution: greater wind speed results in a cooler ocean and easier snowball inception. Finally, although albedo values are critical for the albedo feedback that initiates snowball inception, they are even more important for determining the amount of radiative forcing required to deglaciate the snowball Earth, as the entire planet is covered by snow and ice. Through a suit of sensitivity studies, the amount of forcing required to deglaciate a hard snowball Earth is found to be extremely sensitive to the snow albedo, sea ice albedo and snow masking depth
From winds to eddies to diapycnal mixing of the deep ocean : the abyssal meridional overturning circulation driven by the surface wind-stress by Geoffrey John Stanley( )

1 edition published in 2013 in English and held by 2 WorldCat member libraries worldwide

Previous numerical and theoretical results based on constant diapycnal diffusivity suggested the abyssal meridional overturning circulation (MOC) should weaken as winds over the Southern Ocean intensify. We corroborate this result in a simple ocean model, but find it does not hold in more complex models. First, models with a variable eddy transfer coefficient and simple yet dynamic atmosphere and sea-ice models show an increase, albeit slightly, of the abyssal MOC under increasing winds. Second, the abyssal MOC significantly strengthens with winds when diapycnal diffusivity is parameterized to be energetically supported by the winds. This tests the emerging idea that a significant fraction of the wind energy input to the large-scale ocean circulation is removed by mesoscale eddies and may then be transferred to internal lee waves, and thence to bottom-enhanced diapycnal mixing. A scaling theory of the abyssal MOC is extended to incorporate this energy pathway, corroborating our numerical results
Modeled changes to the earth's climate under a simple geoengineering scheme and following geoengineering failure by Michael John Shumlich( )

1 edition published in 2012 in English and held by 2 WorldCat member libraries worldwide

Geoengineering is the intentional alteration of the Earth's climate system. The international Geoengineering Model Intercomparison Project (GeoMIP) seeks to identify the potential benefits and side effects of geoengineering on the Earth's climate. This thesis examines the first two experiments from the contribution of the Canadian Centre for Climate Modelling and Analysis to GeoMIP. In the first experiment (G1), atmospheric carbon dioxide concentrations are quadrupled and the solar constant is reduced to offset the increased greenhouse gas forcing. In the second experiment (G2), atmospheric carbon dioxide concentrations are increased at the rate of 1% per year and the solar constant is incrementally reduced to offset the greenhouse gas forcing. In concert with these experiments, results from two other experiments were analyzed, one in which the atmospheric greenhouse gas concentrations are quadrupled one in which they are increased at the rate of 1% per. The results obtained are in broad agreement with earlier work, showing that solar radiation management geoengineering schemes can prevent an increase in mean global surface temperature as atmospheric carbon dioxide concentrations increase. Though the mean global temperature remains constant while geoengineering is employed, there are regional and zonal differences from the control climate, with high latitude warming and cooling in the tropical and subtropical regions. In particular, the meridional temperature gradient is reduced compared to that of the control climate. The G2 experiment was very similar to the G1 experiment in terms of the spatial surface temperature changes, though the changes seen in the G2 experiment were less pronounced and the regions of statistical significance were smaller. During the geoengineering period, seasonal changes and a statistically significant decrease in global precipitation, particularly over the ocean were apparent in the G1 run. As with temperature, the spatial pattern of precipitation changes during the geoengineering period for G2 are similar to the same period in G1, but reduced in magnitude. However, most of the spatial changes to precipitation in the G2 experiment during geoengineering deployment fail to be statistically significant. Following geoengineering termination, the G1 experiment responds rapidly, with surface and ocean temperatures, NH and SH summer sea ice volume, AMOC transport volume and global precipitation following the same time evolution and reaching those same values found in the 4? CO2 experiment's first 10 years. Following geoengineering failure, the G2 run also experiences rapid climate change in all of the variables studied, but does not approach the first 10 years of the 1%CO2yr-1 experiment, because the forcings are quite different in the two runs. Taken together, these results suggest that, while geoengineering to reduce incoming solar radiation could offset the global temperature increase due to increased atmospheric greenhouse gas concentrations, there would be regional warming and cooling, as well as both global and regional impacts on the hydrological cycle. These results also suggest that, should geoengineering suddenly stop, the Earth's climate would react immediately, with rapid changes in nearly all of the climate variables examined
Land cover change, vegetation dynamics and the global carbon cycle : experiments with the UVic earth system climate model by H. Damon Matthews( Book )

1 edition published in 2004 in English and held by 2 WorldCat member libraries worldwide

On Arctic and Atlantic halocline interactions in Baffin Bay by Julie Lobb( Book )

1 edition published in 2004 in English and held by 2 WorldCat member libraries worldwide

Déterminer les répercussions du changement climatique sur le risque d'assurance et la communauté mondiale : phase I, principaux indicateurs by Charles Curry( )

5 editions published between 2012 and 2013 in French and English and held by 0 WorldCat member libraries worldwide

"Since 2005, severe weather and climatological events accounted for 85% to 90% of natural hazards resulting in claims of property damage or personal injury, according to global totals. Prompted by evidence of recent increases in damages due to such events and longer-term climate trends, this report presents a summary of the most recent data from the area of climate change research. This effort is intended to inform both the worldwide community of actuaries, business leaders, and the general public of the weight of scientific evidence regarding the Earth's climate and the changes it is undergoing"--Executive summary
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Audience level: 0.37 (from 0.09 for The German ... to 0.87 for Snowball E ...)

Hard choices : climate change in Canada
Alternative Names
Andrew J. Weaver Canadees politicus

Andrew J. Weaver Canadian climatologist

Andrew J. Weaver kanadischer Klimaforscher und Professor

Weaver, Andrew 1961-

Weaver, Andrew J.

Weaver, Andrew John 1961-

English (54)

French (3)

Generation us : the challenge of global warmingKeeping our cool : Canada in a warming worldRapid Reads: Generation Us