在北太平洋上层热带层上升的一氧化碳观测 (从2012年7月至2013年2月)
Kuo-Ying Wang1, Philippe Nedelec2, Valerie Thouret2
1Department of Atmospheric Sciences, National Central University, Chung-Li, Taiwan.
PloS one
|May 21, 2025
概括
商用飞机现在收集气候数据,揭示了北太平洋上层热带层中一氧化碳 (CO) 污染的增加. 这项研究强调了亚洲工业排放对空气质量的影响.
科学领域:
- 大气化学 大气化学
- 气候科学 气候科学
- 航空科学 航空科学
背景情况:
- 常规使用的客机用于大气数据收集.
- 全球观测系统 (IAGOS) 欧洲现役飞机-1套装部署在商用空客A340-300飞机上.
- 这项倡议始于2012年7月,用于气候研究.
研究的目的:
- 介绍2012年7月至2013年2月在北太平洋上层热带层收集的一氧化碳 (CO) 数据.
- 为了比较当前的二氧化碳水平与历史的NASA飞机任务 (1991年,1994年,2001年).
- 调查该地区二氧化碳污染的来源和时间变化.
主要方法:
- 使用安装在中国航空公司 (CAL) 商用空客A340-300上的IAGOS Package-1.
- 在常规飞行期间收集现场化学数据,特别是一氧化碳 (CO).
- 使用HYSPLIT模型计算来识别污染源.
主要成果:
- 在1991年至2012年期间,在北太平洋上层热带层观察到人为CO污染的显著增加.
- 在夏季 (7月至9月) 期间,CO度高 (>160ppbv) 是显著的.
- 从2012年10月到2013年2月,记录了较低的二氧化碳度 (<100ppbv),这表明了季节性变化和污染物的有效垂直转移.
结论:
- 这些发现强调了人为污染物在地面水平的有效垂直运输到上层热带层.
- 亚洲工业地区被确定为北太平洋上层热带 CO 污染的主要来源.
- 该研究增强了对使用商用飞机进行气候研究的二氧化碳污染动态的理解.
相关概念视频
Carbon Dioxide Transport in the Blood
1.4K
Carbon dioxide (CO2) transport in the blood is critical to human physiology. On average, our body cells produce around 200 mL of CO2 per minute, precisely the quantity expelled by the lungs. This process involves the transportation of CO2 from the tissue cells to the lungs in three primary forms.
Forms of CO2 Transport
1. Dissolved in plasma: A small percentage (7-10%) of CO2 is transported and dissolved directly in the plasma.
2. Carbaminohemoglobin: Just over 20% of CO2 is chemically bound to...
Forms of CO2 Transport
1. Dissolved in plasma: A small percentage (7-10%) of CO2 is transported and dissolved directly in the plasma.
2. Carbaminohemoglobin: Just over 20% of CO2 is chemically bound to...
1.4K
Assessment of Diffusion and Perfusion
765
Understanding and evaluating diffusion and perfusion is critical in assessing a patient's respiratory and circulatory health. These processes play key roles in maintaining the body's internal environment, ensuring that tissues receive adequate oxygen while waste products are efficiently removed.
The Role of Diffusion in Respiration
Diffusion is the process by which molecules move from an area of higher concentration to an area of lower concentration. In the respiratory system, this...
The Role of Diffusion in Respiration
Diffusion is the process by which molecules move from an area of higher concentration to an area of lower concentration. In the respiratory system, this...
765
Global Climate Change
24.0K
Throughout its ~4.5 billion year history, the Earth has experienced periods of warming and cooling. However, the current drastic increase in global temperatures is well outside of the Earth’s cyclic norms, and evidence for human-caused global climate change is compelling. Paleoclimatology, the study of ancient climate conditions, provides ample evidence for human-caused global climate change by comparing recent conditions with those in the past.
24.0K
Pulse Oximetry
293
Pulse oximetry, or SpO2, is a non-invasive method for continuously monitoring arterial oxygen saturation (SaO2). This procedure involves attaching a probe or sensor to the patient's fingertip, forehead, earlobe, or nose bridge. The sensor works by detecting changes in oxygen saturation levels through light signals generated by the oximeter and reflected by the pulsing blood under the probe.
Purpose
Average SpO2 values are greater than 95%. If the readings fall below 90%, it indicates that...
Purpose
Average SpO2 values are greater than 95%. If the readings fall below 90%, it indicates that...
293
Special considerations while measuring oxygen saturation
527
Assessing respiratory rate concurrently with pulse measurement is fundamental to patient care, providing valuable insights into the patient's respiratory function. The normal breathing rate for an adult usually falls within a normal range of 12 to 20 breaths per minute. Abnormal respiratory rates can signal underlying health conditions or the need for immediate intervention.
Ensuring accuracy in vital sign recordings while prioritizing patient comfort and minimizing anxiety is...
Ensuring accuracy in vital sign recordings while prioritizing patient comfort and minimizing anxiety is...
527
Pulmonary Function Tests
285
Pulmonary Function Tests (PFTs)
Pulmonary Function Tests are crucial diagnostic tools for assessing respiratory function, particularly in patients with chronic respiratory disorders. They comprehensively evaluate lung volumes, ventilatory function, breathing mechanics, diffusion, and gas exchange. These tests help diagnose pulmonary diseases and play a significant role in monitoring disease progression, evaluating disability, and assessing response to therapy.
PFTs involve using a spirometer, a...
Pulmonary Function Tests are crucial diagnostic tools for assessing respiratory function, particularly in patients with chronic respiratory disorders. They comprehensively evaluate lung volumes, ventilatory function, breathing mechanics, diffusion, and gas exchange. These tests help diagnose pulmonary diseases and play a significant role in monitoring disease progression, evaluating disability, and assessing response to therapy.
PFTs involve using a spirometer, a...
285


