Annual Report on the Environment and the Sound Material-Cycle Society in Japan 2007 Page: 2
132 p. : col. ill.View a full description of this text.
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Chapter 1
Accelerating Global Warming
Global warming has been accelerating. The term "global warming" is now widely recognized, but in reality expectable outcomes
and its impacts on our lives are not thoroughly understood by people.
1. We are Currently Facine Acceleratine Global Warming
The Intergovernmental Panel on Climate Change (IPCC), which is a framework to estimate the climate change caused by
greenhouse gases (GHG), to assess its potential impact on nature, society and the economy and to assess options for mitigation. It is
currently finalizing its Fourth Assessment Report (AR4).
According to the report issued by the IPPC's Working Group I (WG1), which presents the physical basis of Climate Change, the
global atmospheric concentration of carbon dioxide has increased 1.4 times from a pre-industrial value of about 280 ppm to 379
ppm in 2005. The report also explains that the updated 100-year linear
trend (1906 to 2005) of global mean surface temperatures is 0.74C Figure 1-2: Changing global average temperature
[0.560C to 0.92C]. In addition, the linear warming trend over the last
50 years (0.13C [0.10C to 0.16C] per decade) is nearly twice that 0.5- 14.5
for the last 100 year. 0 .o f'
The AR4 WG1 report (the IPPC report issued by its Working Group oo ,914.0 ~
I for the Fourth Assessment Report) says that eleven of the last twelve - a
-0.5 o 13.5
years (1995-2006, excluding 1996) rank among the 12 warmest years
1850 1990 1950 2000
in the instrumental record of global surface temperature (the average Source: IPCCAR4 WG1 Report
of near-surface air temperature over land and sea surface temperature)
since 1850 (Figure 1-3). The IPPC's Third Assessment Report issued Figure 1-3: Annual Anomalies of Surface
Temperature Anomalies for the past fifty
years
Figure 1-1: Changing CO2 concentration from (oC)
ice core and modern data 0.5
0.4
400 ~-- 0. .0.3
0.2
350
350 3000.1
-- 00 1900 20100
S-0.1
300 -02
-03
U
-0.3
0
-0 c - ,o 4 o c - ,o o c - ,o o c - ,o o c -(year)
250 -
I I I I Note 1: Red bars indicate the warmest twelve years since 1850.
10000 5000 0 (years) Note 2: Anomalies are deviations from normal (1971 - 2000 average).
Time (before 2005) Source: Compiled by the Ministry of the Environment based on the Japan
Source: IPCCAR4 WG1 Report Meteorological Agency data.2
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Japan. Kankyōsho. Annual Report on the Environment and the Sound Material-Cycle Society in Japan 2007, text, 2007; Tokyo, Japan. (https://digital.library.unt.edu/ark:/67531/metadc11843/m1/4/: accessed April 19, 2024), University of North Texas Libraries, UNT Digital Library, https://digital.library.unt.edu; .