57 Global Warming Countermeasures "Visualization" September 7, 19:14
Let's replace your
car with an electric car and
replace your light bulb with an LED
Have you ever wondered how effective global warming countermeasures are?
In the latest research, the effects are quantified and can be compared.
Find out about your efforts.
(Social Department, Motoyoshi Okamoto / International Department, Tamura Galaxy / Network News Department, Shinya Fujishima)
How effective is it?
"Global warming may increase extreme heat waves and heavy rains." The
other day, we reported in the news about a report compiled by experts around the world who study global warming.
However, on the internet, there are
voices such as
"I understand that it is difficult, but what should I do?"
"Even
if I do
my best alone ..."
.
I (Okamoto), who usually interviews about global warming, try to take measures against global warming, such as replacing the light bulbs at home with LEDs, but I realized that I'm not sure how effective it is. I did.
"Quantified" effect
Under such circumstances, research by the National Institute for Environmental Studies was announced.
Specific figures show how much greenhouse gas reduction is effective for 57 measures related to housing, transportation, food, etc.
Of these, the following graph shows the top 20 most effective measures.
* 57 A detailed explanation of the actions and effects is at the end of the article.
* The figures are the amount of greenhouse gas emissions (carbon dioxide equivalent) that can be reduced on average if one Japanese person continues the actions for one year.
* Pink = housing / blue = moving / green = food / gray = other measures
Looking at this, the most effective way is to rebuild a house that can use energy efficiently.
It has the effect of reducing up to 2.1 tons of greenhouse gases.
Next, measures related to movement are lined up, and "Make your car into an electric vehicle (charged with renewable energy)" is 0.47 tons, and when charging an electric vehicle with normal power, it is about half, 0.24 tons.
In addition, there are measures such as "vegan" and "vegetarian" who eat mainly vegetables instead of meat.
Reporter's measures, I investigated
Then, how well can I (Okamoto) take measures against global warming?
I chose the one I'm working on recently.
Partly due to the influence of Corona, I have more opportunities to telework at home.
Commuting is exclusively by train.
Use a bicycle to move nearby.
I switched my home electricity to renewable energy (after consulting with my family).
The light bulb is replaced with an LED, and the book is reading an e-book.
If you choose these measures and simply add up the numbers ... the result is 3.4 tons.
Is this enough?
★★ Please refer to the explanation of 57 measures at the end of the article and make your choice!
★★
The target is 3.9 tons per person!
According to Rui Koide, a researcher at the National Institute for Environmental Studies, who led the research, the average amount of greenhouse gases emitted by Japanese people in their daily lives is 7.1 tons per person per year.
Nowadays, the common goal in the world is to limit the temperature rise due to global warming to 1.5 ° C compared to the latter half of the 19th century.
Failure to achieve this increases the risk of frequent and life-threatening extreme phenomena such as "maximum temperatures near 50 degrees Celsius" and "super typhoons."
However, in order to achieve this goal, it is necessary to reduce 3.9 tons (!) Per capita per year by 2030, nine years later.
Therefore, my current measures do not reach my goal.
According to Mr. Koide, the influence of each action may actually be less effective than simply adding up the reduction amount of each action.
My honest opinion is that it's not easy to reach your goals.
Rui Koide, Researcher, National Institute for Environmental Studies
"It is not easy to stop global warming by individual efforts. However, by incorporating various measures that suit your lifestyle, you can take measures against global warming. Demand for products and services will expand, leading to changes in society as a whole. "
"Although the effect is great, there are some measures that are difficult to choose because it costs money, but in the future, with the assistance of the government and the expansion of products and services by companies, it will become a society where consumers can easily choose. It is important to go
"Don't buy more than you need"
Of the 57 measures, the one that I felt was easy to get started and had a high effect was "wearing clothes for a long time (0.19 tons reduction)".
In fact, clothes are often derived from petroleum, and the problem is that greenhouse gases are emitted when they are incinerated.
I (Tamura) visited the store of Patagonia, a major outdoor equipment company in the United States, in Shibuya, Tokyo.
When I entered the store, the first thing I noticed was a panel saying "Don't buy things you don't need."
It's a catch phrase, but the ones on the first floor of this store are used clothes.
Approximately 1000 pieces purchased from company staff were lined up and sold at about half the list price.
Patagonia is a company that has been focusing on environmental measures, but since August, it has started selling used clothing at this store for a limited time.
Looking at the used clothing lined up, a message from the original owner was attached.
For example, one mountaineering pants has a handwritten memory that says, "I was there when I ate a delicious mountain lodge Gohan at Tengu Sanso in Hakuba!"
I visited on weekdays, but many customers came, with the aim of getting each outfit to be attached to me and reducing the number of clothes that are discarded.
Patagonia PR manager Michiko Rogers
"I'm wearing an aloha shirt that I bought when I joined the company 20 years ago (laughs). In Japan, there are people who are thinking about the environment and starting to think about new ways of living. I feel that the number is increasing. I hope that people who have only bought new products will pick up the products here and think that used products are also good. "
Do you wear clothes 30 times?
Efforts to wear clothes for a long time have begun to spread as a campaign called "Wear Me 30 Times" in Italy, which is said to be the fashion center of the world.
Clothes buyers access a dedicated site from the QR code printed on the tag.
Upload a selfie photo every time you put on your clothes.
When you wear it 30 times, you can get a coupon.
Currently, more than 50 fashion brands are participating in this initiative, mainly in Europe, and Indian and Indonesian brands are also joining from Asia.
You can get on the electric car from today
More effective measures than "wearing clothes for a long time (0.19 tons reduction)" are related to cars.
"Turning your car into an electric vehicle (charging with renewable energy)" ... 0.47 tons reduction
"Use of car sharing" ... 0.21 tons reduction
It seems that it is a high cost hurdle for people who own a car to replace it with an electric car, but the “car share of electric cars” that can be easily started is expanding.
Two cars parked in the parking lot of the city hall in Odawara City, Kanagawa Prefecture.
Actually, this is an electric car.
It is one of the electric vehicle stations set up by venture companies, and is used by the city as a public vehicle during the day on weekdays, but can also be used by citizens on weekday nights and weekends.
There are 27 such stations in total in Odawara City and the surrounding Hakone Town, and a total of 47 electric vehicles are installed.
If you want to ride, you can get on for about 200 to 300 yen per 15 minutes by registering as a member and making a reservation from the smartphone app.
Approximately 70% of the electricity used for charging is covered by renewable energy, and you can check the charging rate and mileage of each car in advance with the app.
We talked to a male office worker in Odawara City who is using this service.
Manabu Mochizuki, who uses car sharing
"When my daughter graduated from high school and didn't need to pick up and drop off, I used to use it for shopping once in a while, so I took the plunge and sold my car. There is no maintenance fee, and the usage fee is about several thousand yen. I am satisfied that it is environmentally friendly because I work in the nature-rich Hakone tourism industry. "
According to the venture company that runs this business, there is a growing interest in electric vehicles among people who use car sharing.
REXEV Director Takashi Fujii
"I've heard many times from car-sharing users that they chose an electric car when they bought a new car. I feel that they feel free to enjoy the goodness of electric cars."
Global warming countermeasures for society as a whole
I think that the research on 57 behaviors we interviewed this time is epoch-making in considering the big global issue of global warming in the lives of each of us.
People tend to think that "countermeasures against global warming" require patience, but by using clothes for a long time, you will become more attached to them and become more interested in the natural environment around you. I felt I could work on it.
However, there are some behaviors such as rebuilding a house that cost a lot of money, and teleworking that is difficult to select based on individual judgment.
I think that global warming countermeasures need to be considered not only by individual efforts but also by the actions of governments and companies as a whole.
★★ 57 measures and effects ★★
Introducing 57 "countermeasures" and "reduction effects" in detail.
While scrolling the screen, select the measures that you can incorporate into your life and see the effects.
Greenhouse gas reduction in "houses" (15)
▼ Turn your home into a "life cycle carbon minus house" 2.1 tons
Home, solar power generation on the roof and high energy-saving performance will reduce daily energy consumption to virtually zero, and also emit greenhouse gas emissions from building construction and maintenance. When shifting to a "life cycle carbon minus housing" that cancels out.
▼ Converting your home to a "zero energy house" 1.8 tons When
you move your
home to a "zero energy house" that reduces
daily energy consumption to virtually zero by using solar power generation on the roof and high energy-saving performance.
▼ Converting your home to a "quasi
-zero energy house" When you move your
1.4 ton
home to a "quasi-zero energy house" that reduces the daily power supply from the outside to 25% by solar power generation on the roof and high energy-saving performance.
▼ Introduction of solar panels (cooker to IH) 1.4 tons
Install solar panels on the roof of your house to generate the same amount of power as the power consumption, and use the cooker to IH to reduce the consumption of cooking gas to zero. If you set it to.
▼ Introduction of solar panels 1.3 tons When
solar panels are installed on the roof of a house to generate the same amount of power as the power consumption.
▼ 1.2 tons
of electricity at home for renewable energy When electricity at home is switched to 100% derived from renewable energy.
▼ Compact home 0.24 tons When
the floor area of the
home is compacted to
the average level (about 30 square meters) of an apartment house.
▼ Introduction of solar water heater 0.18 tons When
a solar water heater is installed at home and used in combination with a gas boiler, nearly half of the energy required for hot water supply is covered by solar heat to reduce the consumption of hot water gas and kerosene. ..
▼ Perform heat insulation reform 0.14 tons When
you remodel your home and make it equivalent to "performance grade 4 such as heat insulation".
▼ Introducing a heat pump water heater 0.12 tons When
a heat pump water heater is installed at home to supply hot water with electricity and the consumption of gas and kerosene for hot water is reduced to zero.
▼
If you do not use a gas stove or an oil stove for
heating your home to 0.12 tons only with an air conditioner, but
use an air conditioner instead.
▼ Warm Biz / Cool Biz at home 0.11 tons When
the energy for heating and cooling is reduced by wearing Warm Biz or Cool Biz in a house equivalent to "Performance Grade 2 such as Insulation".
▼ 0.09 tons
of light bulbs at home replaced with LEDs When all light bulbs at home are replaced with LEDs.
▼ Energy saving by nudge 0.06 tons When
energy saving is performed by "nudge" who voluntarily changes behavior from the viewpoint of behavioral economics, and energy consumption at home is reduced by 3%.
▼ When replacing a home window with a double-glazed window 0.05 tons When replacing a home window with a double-glazed
window with high heat insulation performance.
"Movement" greenhouse gas reduction (22)
▼ Use of ride sharing 0.51 When
four people
ride in a ton
car or taxi and move.
▼ When
you replace your car with an electric vehicle (charged with renewable energy
) 0.47 tons When
you replace your car with an electric vehicle and charge it with electricity derived from renewable energy.
▼ 0.41 tons of city movement by public transportation
When traveling in the city for purposes other than commuting to work or school, if you do not use your own car and instead use the same amount of buses, trains, and bicycles.
▼ When
you replace your car with a PHEV (charged with renewable energy) and replace your
0.38 ton
car with a plug-in hybrid vehicle (PHEV) and charge it with electricity derived from renewable energy.
▼ Implementation of telework 0.28 tons When
complete telework is implemented and commuting is reduced to zero.
▼ When the distance between home and work / school is close to 0.26 tons
and the commuting time is shortened to an average of 30 minutes per day.
▼ When
you replace your car with a PHEV and replace your
0.25 ton
car with a plug-in hybrid vehicle (PHEV).
▼ 0.24 tons for
commuting to work or school When traveling for commuting to work or school, if you do not use your own car and instead use the same amount of buses, trains, and bicycles.
▼
If you replace your car with an electric car
0.24 tons
If you replace your car with an electric car.
▼ Use of car sharing 0.21 When using car sharing
without purchasing a
ton
car.
▼ 0.19 tons of long-distance travel by public transport
If you do not use your own car for long-distance travel that crosses prefectural borders, but instead use a bus or train.
▼ Living in a compact city 0.19 tons
If you live in a compact city where the average travel time for shopping, going to hospital, leisure activities, etc. is 10 minutes per day.
▼ When
you replace your
car with a hybrid car 0.19 tons
If you replace your car with a hybrid car (excluding plug-in hybrid cars).
▼ 0.17 tons of
homecoming online When homecoming is done online and the distance traveled to visit a family is zero.
▼ 0.15 tons for spending vacations nearby When
the travel distance of an overnight trip is limited to 90 km or less, the use of airplanes for travel purposes is stopped, and the travel distance of private cars and public transportation is shortened.
▼ Eco-driving 0.15 Ton
My car (gasoline car, diesel car, hybrid car) is driven so that the fuel efficiency is improved by 20%.
▼ Bulk buying 0.15 tons When the
frequency of going shopping
is reduced to once a
week
.
▼
If you replace your car with a light car
0.13 tons
If you replace your car with a light car.
▼ 0.10 tons of vacation spent in Japan When
the travel distance of an overnight trip instead of an overseas trip is shortened to the average travel distance of a domestic flight.
▼ 0.06 tons of
weekends
spent locally If you spend a
weekend nearby and shorten the distance you use trains, buses, and cars for leisure purposes to the average distance traveled by bicycle.
▼ 0.04 ton for
domestic flight
to train When a
domestic flight is not used and a long-distance train is used instead.
▼ Taxi movement for buses / bicycles If you
do not use a
0.02 ton
taxi, but instead use a bus / bicycle for the same amount.
Greenhouse gas reduction of "food" (10)
▼食事を完全菜食（ヴィーガン）に 0.34トン
肉・魚・乳製品・卵を食べず、代わりに豆類・穀物・野菜などを食べる生活をした場合。
▼食事を菜食（ベジタリアン）に 0.22トン
肉・魚を食べず、代わりに乳製品・卵・豆類・穀物・野菜などを食べる生活をした場合。
▼食事の肉類を代替肉に 0.19トン
肉を食べず、代わりに大豆ミートなど豆類やその加工品を食べる生活をした場合。
▼菓子・アルコール・ジュースを減らす 0.13トン
菓子・スナック類・アルコール・清涼飲料水の消費量を、国が推奨する「食事バランスガイド」に基づいた健康的な食生活の水準まで減らした場合。
▼バランスの取れた食事に 0.12トン
食事全体を、国が推奨する「食事バランスガイド」に基づいた健康的な食生活のバランスに整えた場合。
▼食事の肉類を魚類に 0.07トン
肉を食べず、代わりに魚を食べる生活をした場合。
▼食事の肉類を鶏肉のみに 0.07トン
牛肉や豚肉などを食べず、代わりに鶏肉を食べる生活をした場合。
▼食品ロスをゼロに 0.05トン
食品ロスをなくし、その分だけ食料の購入量を減らした場合。
▼旬の野菜や果物を食べる 0.04トン
旬の野菜や果物を食べて、農業用ハウスで栽培されるものを食べない生活をした場合。
▼地元で採れた野菜や果物を食べる 0.01トン
地元で採れた野菜や果物だけを食べる生活をした場合。
「その他」の温室効果ガス削減量（10）
▼レジャーをアウトドアや地域で 0.25 トン
エネルギー消費が多い娯楽施設（遊園地・映画館など）でレジャーを行う代わりに、アウトドアやスポーツ、地域での文化活動などで過ごす場合。
▼衣類を長く着る 0.19 トン
服を長く着たり、古着を活用したりすることで、1年あたりの衣類の購入量を4分の1程度まで削減した場合。
▼アルコールとたばこを控える 0.16 トン
アルコールとタバコの消費量をゼロにし、タバコが原因となる医療サービスが不要になった場合。
▼娯楽用品を長く使う 0.11 トン
エンターテインメント・スポーツ・ガーデニングなど娯楽に関する製品を長く使うことで、1年あたりの購入量を4分の1まで削減した場合。
▼旅行サービスをエコに 0.09 トン
旅行先で、エネルギー消費の多い宿泊施設などを利用せず、代わりにアウトドア・キャンプなどで過ごした場合。
▼消耗品を節約する 0.09 トン
消耗品（化粧品・衛生用品・台所用品・文房具）を節約し、1年あたりの購入量を半分余り削減した場合。
▼小型家電を長く使う 0.05 トン
小型家電を長く使うことで、1年あたりの購入量を4分の1まで削減した場合。
▼装飾品を長く使う 0.03 トン
バッグ・ジュエリーを長く使うことで、1年あたりの購入量を4分の1程度まで削減した場合。
▼家具を長く使う 0.03 トン
家具を長く使うことで、1年あたりの購入量を5分の1近くまで削減した場合。
▼電子書籍の利用 0.02 トン
印刷された本や雑誌を利用せず、代わりに電子書籍を利用した場合。
出典:
Koide et al （2021） Exploring Carbon Footprint Reduction Pathways through Urban Lifestyle Changes:A Practical Approach Applied to Japanese Cities. Environmental Research Letters. 16 084001