Are carbon tariffs climate policy?
炭素関税は気候政策か？ (AI 翻訳)
Ivan Rudik, Gregory Casey, Kyle C. Meng
🤖 gxceed AI 要約
日本語
米国の炭素関税は国内排出を増やし国外排出を減らすが、国内炭素税との併用政策の方が世界全体の排出削減効果が大きく、米国のGDPと厚生も向上させる。多国間での関税のみの協定では排出削減効果は限定的である。
English
Carbon tariffs alone increase US emissions and lower foreign emissions, achieving half the global reductions of a combined domestic carbon tax and tariff policy. Both approaches improve US GDP and welfare, but combined policy is more effective. Multilateral tariff-only agreements yield modest reductions that do not scale with membership.
Unofficial AI-generated summary based on the public title and abstract. Not an official translation.
📝 gxceed 編集解説 — Why this matters
日本のGX文脈において
日本でもカーボンプライシングの導入が議論される中、炭素関税の単独政策と国内炭素税との併用効果を定量的に比較した本論文は、政策設計への示唆を与える。特に輸出依存産業への影響評価に役立つ。
In the global GX context
This paper informs the ongoing global debate on border carbon adjustments, particularly for the EU's CBAM and US proposals. It highlights that standalone carbon tariffs are less effective than combined domestic policies, and multilateral cooperation may be limited.
👥 読者別の含意
🔬研究者:Quantitative trade-climate model with clear policy implications for carbon border adjustments.
🏢実務担当者:Insights into how carbon tariffs may affect supply chain costs and competitiveness.
🏛政策担当者:Evidence that carbon tariffs alone are inferior to combined domestic carbon pricing and tariff policies.
📄 Abstract（原文）
Carbon import tariffs, traditionally considered a complement to domestic climate policy, are increasingly proposed as standalone policies. We build a quantitative trade model to compare U.S. carbon tariffs with and without a domestic carbon tax, each applied to a set of carbon-intensive, trade-exposed sectors. We find three main results. First, a U.S. carbon tariff increases U.S. emissions, lowers foreign emissions, and on net achieves half the global emissions reductions of the combined policy, which lowers both U.S. and foreign emissions. Second, both approaches increase U.S. GDP and welfare, but the combined policy has a larger effect due to terms of trade improvements. Third, global emissions reductions from multilateral tariff-only agreements are modest and do not increase monotonically with greater membership, whereas under combined policies they scale considerably with membership.
🔗 Provenance — このレコードを発見したソース
- openalex https://osf.io/3aw8sfirst seen 2026-06-17 07:27:22
🔔 こうした論文の新着を逃したくない方は キーワードアラート に登録（無料・3キーワードまで）。
gxceed は公開メタデータに基づく研究支援データセットです。要約・翻訳・解説は AI 支援で生成されています。 最終的な解釈・検証は利用者が原典資料に基づいて行うことを前提とします。