HADCM3_B2_dswf

Project: IPCC Data Distribution Centre : Third Assessment Report data sets
The Intergovernmental Panel on Climate Change (IPCC) has been established by WMO und UNEP
to assess scientific, technical and socio-economic information, relevant for the
understanding of climate change, its potential impacts and option for adaption and migration.
Projection of future trends for a number of key variables are provided through this
section of the DDC (http://www.mad.zmaw.de/IPCC_DDC/html/ddc_gcmdata.html).
This information contained in either IS92 emission scenarios (IPCC 1992), the Special
Report on Emission Scenarios (IPCC 2000, SRES) or published model studies using data from
these scenarios.
Six alternative IPCC scenarios (IS92a to f) were published in the 1992 Supplementary Report
to the IPCC Assessment. These scenarios embodied a wide array of assumption affecting how
future greenhouse gas emissions might evolve in the absence of climate policies beyond
those already adoped.
The SRES scenarios have been constructed to explore future developments
in the global enviromental with special reference to the production of greenhouse gases
and aerosol precursor emission.
A set of four scenario families (A1, A2, B1, B2) have been developed that each of this
storylines describes one possible demographic, polito-economic, societal and technological
future. Model experiments, also using different forcing scenarios, were calculated
at other modeling centres.
Emissions Scenarios. 2000 ,Special Report of the Intergovernmental Panel on Climate Change
Nebojsa Nakicenovic and Rob Swart (Eds.)
Cambridge University Press, UK. pp 570
Summary: The SRES data sets were published by the IPCC in 2000 and classified
into four different scenario families (A1, A2, B1, B2).
SRES_B2 storyline describes a world in which the emphasis is on
local solutions to economic, social and enviromental sustainability.
The global population is increasing at a lower rate than A2. It has
an intermediate level of economic development and a less rapid and
more diverse technological change than in A1 and B1.
The Hadley Centre Circulation Model is a 3-dim AOGCM described
by (Gordon et al.,2000 and Pope et al.,2000).
The atmospheric component has a 19 levels horizontal resolution,
comparable with spectral resolution of T42, while the ocean
component has a 20 levels resolution.
HADCM3 (http://www.meto.gov.uk/research/hadleycentre/models/HadCM3.html ).
The changes of anthropogenic emissions of CO2, CH4, N2O and sulphur
dioxide are prescribed according to the above mentioned scenario.

项目：政府间气候变化专门委员会（Intergovernmental Panel on Climate Change, IPCC）数据分发中心：第三次评估报告数据集
世界气象组织（World Meteorological Organization, WMO）与联合国环境规划署（United Nations Environment Programme, UNEP）联合设立了政府间气候变化专门委员会（IPCC），以评估与理解气候变化、其潜在影响以及适应与减缓相关的科学、技术与社会经济信息。本数据分发中心（Data Distribution Centre, DDC）的该板块提供了若干关键气候变量的未来趋势预测结果，相关链接：http://www.mad.zmaw.de/IPCC_DDC/html/ddc_gcmdata.html。
此类数据涵盖IS92排放情景（IPCC 1992）、排放情景特别报告（Special Report on Emission Scenarios, SRES，IPCC 2000）中的内容，以及基于上述情景数据开展的已发表模型研究成果。
IPCC在《IPCC评估报告1992年补充报告》中发布了6种备选排放情景（IS92a至IS92f）。这些情景包含一系列假设，用以描述在现有气候政策框架之外未新增额外气候政策的情况下，未来温室气体排放的演化路径。
SRES情景旨在探究全球环境的未来发展趋势，重点关注温室气体和气溶胶前体物的排放情况。
研究团队构建了四类情景族（A1、A2、B1、B2），每类情景均对应一种可能的人口、政治经济、社会与技术发展路径。其他气候模型研究中心也基于不同的辐射强迫情景开展了模型实验计算。
《排放情景》，2000年，政府间气候变化专门委员会特别报告，Nebojsa Nakicenovic与Rob Swart（主编），英国剑桥大学出版社，共570页。
摘要：SRES数据集由IPCC于2000年发布，分为A1、A2、B1、B2四类情景族。
SRES_B2情景以寻求经济、社会与环境可持续性的本土解决方案为核心导向。该情景下全球人口增速低于A2情景，经济发展水平处于中等区间，技术变革速度慢于A1与B1情景，且技术路径更为多元。
哈德利中心环流模式（Hadley Centre Circulation Model）是一种三维大气-海洋耦合环流模式（Atmosphere-Ocean General Circulation Model, AOGCM），相关细节参见Gordon等（2000）与Pope等（2000）的研究成果。其大气分量的水平分层为19层，光谱分辨率相当于T42；海洋分量则设为20层分辨率。
HADCM3（http://www.meto.gov.uk/research/hadleycentre/models/HadCM3.html）。
二氧化碳（carbon dioxide, CO₂）、甲烷（methane, CH₄）、一氧化二氮（nitrous oxide, N₂O）以及二氧化硫的人为排放变化均按照上述情景设定。