School of Geography, University of Leeds, Leeds LS2 9JT, UK.
Science. 2011 Feb 4;331(6017):554. doi: 10.1126/science.1200807.
In 2010, dry-season rainfall was low across Amazonia, with apparent similarities to the major 2005 drought. We analyzed a decade of satellite-derived rainfall data to compare both events. Standardized anomalies of dry-season rainfall showed that 57% of Amazonia had low rainfall in 2010 as compared with 37% in 2005 (≤-1 standard deviation from long-term mean). By using relationships between drying and forest biomass responses measured for 2005, we predict the impact of the 2010 drought as 2.2 × 10(15) grams of carbon [95% confidence intervals (CIs) are 1.2 and 3.4], largely longer-term committed emissions from drought-induced tree deaths, compared with 1.6 × 10(15) grams of carbon (CIs 0.8 and 2.6) for the 2005 event.
2010 年，亚马逊地区的旱季降雨量较低，与 2005 年的主要干旱情况明显相似。我们分析了十年的卫星衍生降雨数据，以比较这两个事件。旱季降雨量的标准化异常值表明，2010 年有 57%的亚马逊地区降雨量较低，而 2005 年则为 37%（低于长期平均值的-1 个标准差）。通过使用 2005 年测量的干燥和森林生物量响应之间的关系，我们预测 2010 年干旱的影响为 2.2×10(15)克碳[95%置信区间（CI）为 1.2 和 3.4]，与 2005 年事件的 1.6×10(15)克碳（CI 为 0.8 和 2.6）相比，主要是干旱导致树木死亡的长期承诺排放量。
