نتایج جستجو برای: climate situations

تعداد نتایج: 268696  

2012
Celia McMichael Jon Barnett Anthony J. McMichael

BACKGROUND Climate change is projected to cause substantial increases in population movement in coming decades. Previous research has considered the likely causal influences and magnitude of such movements and the risks to national and international security. There has been little research on the consequences of climate-related migration and the health of people who move. OBJECTIVES In this r...

Microclimate in open space affected by the urban layout and spatial forms plays an important role in the outdoor comfort, thus the outdoor activities based on the comfort sensation will directly affected by the spatial forms. An outstanding open space should satisfy different requirements of outdoor activities and create relatively comfortable place.Most studies have been conducted on the...

2015

The UN climate summit in Paris will bring about a new bottom-up type of agreement based on voluntary emissions reduction pledges by individual states. This marks the end of the top-down policy paradigm dominant for more than two decades. Scientific advisors should use the paradigm shift manifesting itself in UN negotiations as an opportunity to critically reassess their role in international cl...

2007
Martin L. Weitzman

Using climate change as a prototype motivating example, this paper analyzes the implications of structural uncertainty for the economics of catastrophes. The paper shows that having an uncertain multiplicative parameter, which ampli…es or scales exogenous impulses and is updated by Bayesian learning, induces a critical “tail fattening”of posterior-predictive distributions. Such fattened tails h...

2006
D. E. Veron

Parameterization of cloud-radiation interactions in an atmospheric general circulation model using a stochastic approach allows for a statistical representation of cloud field geometry. Previous work indicates that the stochastic approach to cloud-radiation parameterization performs better than typical plane-parallel algorithms in situations where the horizontal cloud fraction is between 0.2 an...

2005
RAFAIL ABRAMOV ANDREW MAJDA RICHARD KLEEMAN

A predictability framework, based on relative entropy, is applied here to low-frequency variability in a standard T21 barotropic model on the sphere with realistic orography. Two types of realistic climatology, corresponding to different heights in the troposphere, are used. The two dynamical regimes with different mixing properties, induced by the two types of climate, allow the testing of the...

Journal: :Philosophical transactions. Series A, Mathematical, physical, and engineering sciences 2007
David A Stainforth Thomas E Downing Richard Washington Ana Lopez Mark New

There is a scientific consensus regarding the reality of anthropogenic climate change. This has led to substantial efforts to reduce atmospheric greenhouse gas emissions and thereby mitigate the impacts of climate change on a global scale. Despite these efforts, we are committed to substantial further changes over at least the next few decades. Societies will therefore have to adapt to changes ...

2007
Stefano Zanero

In this paper, we will briefly review the problem of IDS and IPS performance evaluation, demonstrating how flawed current approaches to evaluation are, both in academia and in the industry. We will show all the issues in current testing methodologies, as well as key reasons to distrust claimed performance rates of current IDS systems. We will also show how practical testing architectures can be...

2015
ELIZABETH A. CHORNESKY DAVID D. ACKERLY PAUL BEIER FRANK W. DAVIS LORRAINE E. FLINT JOSHUA J. LAWLER PETER B. MOYLE

Significant efforts are underway to translate improved understanding of how climate change is altering ecosystems into practical actions for sustaining ecosystem functions and benefits. We explore this transition in California, where adaptation and mitigation are advancing relatively rapidly, through four case studies that span large spatial domains and encompass diverse ecological systems, ins...

2015
ShaLanDer Kumar ThIagarajah ramILan

The livestock production system is considered equally sensitive to climate change as that of core agriculture system and at the same time livestock itself is also contributing to the phenomenon. The present paper attempts to analyze the sensitivity of livestock productivity in rainfed regions to climatic variability, significance of climate change with respect to Indian livestock and mitigation...

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