6. Euro Exchange Rate and Dollar Strength: Global Currency Repricing During the Eurozone Crisis | 欧元汇率与美元走强：欧债危机中的全球货币再定价
A Special Lunar New Year Series: The Eurozone Sovereign Debt Crisis | 春节特辑：欧元区主权债务危机
Independent research on structural shifts in energy, technology, and capital.
聚焦能源、技术与资本结构性变化的独立研究。
For informational purposes only. Not investment advice.
仅供信息参考，不应被视为投资建议。
Introduction | 引言
The eurozone crisis is often described as a sovereign debt episode rooted in fiscal imbalance and institutional design flaws. Yet its evolution cannot be fully understood without situating it within the broader architecture of the international monetary system.
欧债危机通常被描述为源于财政失衡与制度设计缺陷的主权债务事件。然而，如果不将其置于更广泛的国际货币体系框架之中，其演化过程便无法被完整理解。
Between 2010 and 2012, the euro depreciated significantly against the US dollar, the dollar index strengthened during stress episodes, and global reserve allocations adjusted gradually. These movements were not incidental. They reflected a global repricing of liquidity, institutional credibility, and systemic risk.
2010—2012年间，欧元对美元显著贬值，美元指数在压力阶段走强，全球储备结构出现温和调整。这些变化并非偶然，而是全球对流动性、制度可信度与系统性风险重新定价的结果。
This instalment examines how dollar cycles and global capital flows interacted with internal eurozone vulnerabilities, amplifying the crisis.
本文将分析美元周期与全球资本流动如何与欧元区内部脆弱性相互作用，并对危机形成放大效应。
I. EUR/USD: From Pre-Crisis Peak to Sovereign Stress
EUR/USD：从危机前高点到主权压力阶段
According to European Central Bank reference exchange rate data, EUR/USD peaked at approximately 1.60 in July 2008. This period coincided with strong capital inflows into the euro area and relative confidence in the monetary union framework.
根据欧洲央行参考汇率数据，EUR/USD于2008年7月达到约1.60的高点。该阶段正值资本流入欧元区、市场对货币联盟框架保持信心之时。
Following the global financial crisis and the emergence of Greek fiscal instability in late 2009, the euro began to depreciate. By June 2010, EUR/USD had fallen to approximately 1.19 — a decline of roughly 25 per cent from its 2008 peak.
随着全球金融危机爆发以及2009年底希腊财政问题显现，欧元开始贬值。至2010年6月，EUR/USD降至约1.19，较2008年高点累计贬值约25%。
During the escalation phase of the eurozone crisis in mid-2012 — when Italian and Spanish sovereign spreads widened sharply — the exchange rate again traded near 1.20.
在2012年中欧债危机升级阶段（意大利与西班牙利差扩大期间），欧元汇率再度接近1.20。
The timing of depreciation episodes closely aligned with periods of sovereign stress and programme uncertainty, suggesting that exchange rates acted as forward-looking indicators of systemic risk.
欧元贬值阶段与主权压力上升及援助谈判不确定时期高度一致，显示汇率具有前瞻性的风险反映功能。
II. Dollar Strength and Safe-Haven Reallocation
美元走强与避险资金再配置
Federal Reserve broad US dollar index data show renewed dollar appreciation during major eurozone stress episodes in 2010 and again in 2011–2012.
美联储广义美元指数数据显示，在2010年及2011—2012年欧元区压力阶段，美元出现阶段性升值。
The dollar strengthened during:
the initial Greek sovereign stress in 2010;
the summer escalation of 2011;
the peak uncertainty preceding the ECB’s 2012 OMT commitment.
美元在以下阶段显著走强：
2010年希腊主权压力初期；
2011年夏季危机升级；
2012年OMT承诺前的不确定性高峰。
This appreciation reflected global demand for dollar liquidity and US Treasury securities rather than solely domestic US macroeconomic strength.
这种升值更多反映全球对美元流动性与美国国债的需求，而非单纯源于美国经济基本面改善。
The structural role of the dollar — as the dominant reserve currency and principal funding currency in international banking — amplified safe-haven flows during systemic stress.
美元作为主要储备货币与国际银行体系核心融资货币的结构性地位，在系统性压力时期放大了避险资金流入。
III. Reserve Allocation Adjustments: Evidence from IMF COFER
储备结构调整：IMF COFER 数据证据
The IMF’s Currency Composition of Official Foreign Exchange Reserves (COFER) database provides insight into central bank behaviour during the crisis period.
IMF官方外汇储备货币构成（COFER）数据库揭示了危机期间各国央行储备结构的变化。
According to COFER data:
The euro accounted for approximately 27–28 per cent of allocated global reserves in 2009.
By 2012, its share had declined to roughly 24–25 per cent.
根据COFER数据：
2009年欧元在全球已分配储备中的占比约为27–28%。
至2012年，该比例降至约24–25%。
Over the same period, the US dollar maintained a reserve share consistently above 60 per cent.
同期美元储备份额持续保持在60%以上。
The shift was gradual rather than abrupt. It suggests portfolio rebalancing in response to perceived institutional risk rather than wholesale abandonment of the euro.
这一调整过程呈渐进式，反映储备再平衡，而非对欧元的系统性放弃。
IV. Dollar Funding Stress and Central Bank Swap Lines
美元融资压力与央行互换机制
The eurozone crisis also generated stress in dollar funding markets.
欧债危机亦在美元融资市场产生压力。
Bank for International Settlements international banking statistics indicate that European banks held substantial US dollar liabilities prior to the crisis.
BIS国际银行统计数据显示，危机前欧洲银行持有大量美元负债。
As market confidence weakened, dollar funding pressures intensified. In response, central bank liquidity swap lines between the Federal Reserve and major central banks, including the ECB, were expanded.
随着市场信心下降，美元融资压力上升。作为回应，美联储与包括欧洲央行在内的主要央行扩大了流动性互换安排。
In November 2011, major central banks announced coordinated action to reduce the pricing of dollar liquidity swaps, underscoring the systemic role of the US dollar in global financial intermediation.
2011年11月，主要央行宣布协调行动，下调美元流动性互换成本，凸显美元在全球金融中介体系中的核心地位。
These measures illustrate that eurozone instability had direct implications for global dollar liquidity conditions.
这些措施表明，欧元区不稳定对全球美元流动性具有直接影响。
V. External Amplification Mechanism
外部放大机制
The interaction between internal eurozone vulnerabilities and global dollar cycles created an amplification channel.
欧元区内部脆弱性与全球美元周期之间的互动形成放大机制。
Rising sovereign risk premia triggered capital outflows. Capital reallocation increased demand for dollar assets. Dollar appreciation and tightening global liquidity conditions further weakened financing conditions in vulnerable euro area economies.
主权风险溢价上升触发资本外流。资本再配置提高美元资产需求。美元升值与全球流动性收紧进一步削弱欧元区脆弱经济体的融资条件。
The crisis thus evolved not only through fiscal deterioration but also through cross-border liquidity dynamics embedded in the global monetary system.
因此，危机不仅通过财政恶化演化，也通过嵌入全球货币体系的跨境流动性动态而被放大。
Conclusion | 结语
The eurozone crisis was both an internal institutional crisis and an episode of global currency realignment.
欧债危机既是内部制度危机，也是一次全球货币再平衡过程。
EUR/USD declined from approximately 1.60 in 2008 to near 1.19 in 2010. The US dollar strengthened during peak stress phases. IMF reserve data show a moderate decline in the euro’s global share, while the dollar maintained structural dominance.
EUR/USD从2008年的约1.60降至2010年的约1.19。美元在压力高峰阶段走强。IMF储备数据显示欧元份额温和下降，而美元维持结构性主导地位。
Understanding these external dynamics is essential for assessing how regional fiscal stress can propagate through the global monetary system.
理解这些外部动态，对于评估区域性财政压力如何通过全球货币体系传导具有重要意义。
In the next two instalments, we examine the behaviour of other safe-haven currencies and major commodities during the crisis period.
在下两篇文章中，我们将分析其他避险货币与大宗商品在危机期间的表现。
References
European Central Bank (ECB), Statistical Data Warehouse – Reference Exchange Rates; Government Benchmark Bond Yields.
Federal Reserve Board, Broad US Dollar Index.
International Monetary Fund (IMF), Currency Composition of Official Foreign Exchange Reserves (COFER).
Bank for International Settlements (BIS), International Banking Statistics.
Federal Reserve and European Central Bank, Central Bank Liquidity Swap Announcements (2010–2012).