IPCC Climate Change Data: CGCM1 Model: 2080 Mean Temperature

From the IPCC website: The B2 world is one of increased concern for environmental and social sustainability. Education and welfare programs are widely pursued leading to reductions in mortality and, to a lesser extent, fertility. The population reaches about 10 billion people by 2100, consistent with both the United Nations and IIASA median projections. Income per capita grows at an intermediary rate to reach about US$12,000 by 2050. By 2100 the global economy might expand to reach some US$250 trillion. International income differences decrease, although not as rapidly as in scenarios of higher global convergence (A1, B1). Local inequity is reduced considerably through the development of stronger community support networks. Generally high educational levels promote both development and environmental protection. Indeed, environmental protection is one of the few remaining truly international priorities. However, strategies to address global environmental challenges are less successful than in B1, as governments have difficulty designing and implementing agreements that combine environmental protection with mutual economic benefits. The B2 storyline presents a particularly favorable climate for community initiative and social innovation, especially in view of high educational levels. Technological frontiers are pushed less than in A1 and B1 and innovations are also regionally more heterogeneous. Globally, investment in R&D continues its current declining trend, and mechanisms for international diffusion of technology and know-how remain weaker than in scenarios A1 and B1 (but higher than in scenario A2). Some regions with rapid economic development and limited natural resources place particular emphasis on technology development and bilateral co-operation. Technical change is therefore uneven. The energy intensity of GDP declines at about one percent per year, in line with the average historical experience of the last two centuries. Land-use management becomes better integrated at the local level in the B2 world. Urban and transport infrastructure is a particular focus of community innovation, contributing to a low level of car dependence and less urban sprawl. An emphasis on food self-reliance contributes to a shift in dietary patterns towards local products, with reduced meat consumption in countries with high population densities. Energy systems differ from region to region, depending on the availability of natural resources. The need to use energy and other resources more efficiently spurs the development of less carbon-intensive technology in some regions. Environment policy cooperation at the regional level leads to success in the management of some transboundary environmental problems, such as acidification due to SO2, especially to sustain regional self-reliance in agricultural production. Regional cooperation also results in lower emissions of NOx and VOCs, reducing the incidence of elevated tropospheric ozone levels. Although globally the energy system remains predominantly hydrocarbon-based to 2100, there is a gradual transition away from the current share of fossil resources in world energy supply, with a corresponding reduction in carbon intensity. Data are available for the following periods: 1961-1990, 2010-2039; 2040-2069; and 2090-2099 Mean monthly and change fields.

本内容源自政府间气候变化专门委员会（IPCC）官网：B2情景下的世界，是一个愈发重视环境与社会可持续发展的世界。各国广泛推行教育与福利项目，使得死亡率下降，生育率亦有小幅降低。至2100年，全球人口将达到约100亿，与联合国及国际应用系统分析研究所（IIASA）的中位数预测结果一致。人均收入以中等增速增长，至2050年可达约12000美元；到2100年，全球经济总量或将扩张至约250万亿美元。国际间收入差距有所收窄，但收敛速度不及全球融合度更高的A1、B1情景。通过构建更完善的社区支持网络，本地不平等状况得到显著缓解。整体较高的教育水平同时推动了经济发展与环境保护。事实上，环境保护仍是少数真正具备全球共识的优先议题之一。然而，应对全球环境挑战的战略成效不及B1情景，因各国政府难以设计并推行兼顾环境保护与互利经济收益的国际合作协议。B2情景脉络尤其有利于社区行动与社会创新，尤其是在教育水平整体较高的背景下。技术研发前沿的推进力度不及A1与B1情景，且创新在区域层面更具异质性。全球范围内，研发（R&D）投资延续当前的下滑趋势，技术与专业知识的国际传播机制仍弱于A1、B1情景（但高于A2情景）。部分经济快速发展但自然资源有限的地区，尤为重视技术研发与双边合作，因此技术进步存在不均衡性。GDP的能源强度以年均约1%的速率下降，与过去两个世纪的历史平均水平相符。B2情景下，土地利用管理在地方层面的整合度不断提升。城市与交通基础设施是社区创新的重点领域，这有助于降低对私家车的依赖，并缓解城市蔓延问题。对粮食自给自足的重视推动饮食结构向本地农产品转型，人口高密度国家的肉类消费量有所减少。能源系统因各地自然资源禀赋的差异而呈现区域差异化特征。提升能源与其他资源利用效率的需求，推动部分地区研发低碳排放技术。区域层面的环境政策合作，在部分跨界环境问题的治理中取得成效，例如二氧化硫（SO2）引发的酸化问题，这尤其有助于维持农业生产的区域自给能力。区域合作还降低了氮氧化物（NOx）与挥发性有机化合物（VOCs）的排放，减少了对流层臭氧浓度超标的事件发生。尽管到2100年全球能源系统仍以烃类燃料为主导，但世界能源供应中化石资源的占比正逐步降低，碳排放强度随之下降。本数据集覆盖以下时段：1961-1990年、2010-2039年、2040-2069年以及2090-2099年，包含月均数据与变化量字段。