• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Advances in space research >Satellite and ground detection of very dense smoke clouds produced on the islands of the Parana river delta that affected a large region in Central Argentina
【24h】

Satellite and ground detection of very dense smoke clouds produced on the islands of the Parana river delta that affected a large region in Central Argentina

机译：卫星和地面探测在巴拉那河三角洲岛屿上产生的非常浓厚的烟云，这些烟云影响了阿根廷中部的大部分地区

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Intense fires were produced on the Parana river delta islands, Argentina, during most part of 2008, by a combination of an exceptionally dry period and the farmers' use of a fire land-cleaning technique. In April 2008, those fires significantly affected the nearby regions and their inhabitants, from Rosario city to Buenos Aires mega-city. In this work we present satellite as well as ground Aerosol Optical Depth (AOD) at 550 nm data obtained during the propagation of pollution clouds to the central zone of Argentina. The highest value (1.18) was registered at Buenos Aires by atmospheric remote sensing, using the satellite instrument MODIS/Terra on April 18th 2008 at 10:35 local time (= UT - 3 h). On the same day, ground air quality detectors also measured in this city the highest Total Suspended Particle (TSP) value of the month, 2.02 mg/m~3. The AOD(550) daily variation at Rosario Astronomical Observatory, which is located near the Parana riverside, was derived by combining solar ultraviolet erythemal irradiance data (measured with a YES biometre) with model calculations. On April 25th 2008, from 12:00 to 15:30 local time, a rather high and constant AOD(550) value was registered, with a mean value of (0.90 ± 0.21). Cities located on the side of the Rosario-Buenos Aires highway (San Nicolas, Baradero and San Pedro) were also affected, showing a mean AOD(550) between the Rosario and Buenos Aires values. The paniculate matter was collected with gridded samplers placed on the Parana river islands as well as at the Rosario Observatory. They were analysed with a Scanning Electron Microscope (SEM) and mainly showed a biological origin. Even if normally large particles travel small distances from the source, organic aerosol in the range of 40-100 μm and complex asymmetric structures were registered several kilometres away from the aerosol sources on the islands. Another event of intense UV index attenuation (98.6%) occurred on September 18th 2008, due to very dense smoke clouds that extended over the Rosario area for several hours. The clouds were driven away from the fires by East-northeast and East-southeast winds. The minimum value of this index measured around noon allows to derive a maximum AOD(550)_(max) = (3.65 ± 0.90) at 12:45 local time. Soot clouds extended over the Parana river, transporting Burned Biomass Debris (BBD) that deposited on Rosario. In particular, burned leaves and small branches with dimensions of 1-20 cm were collected. The mean (BBD) particles deposited on the ground from 7:00 to 19:00 local time were (0.92 ± 0.20) BBD/(m~2 h). The main purpose of the present work is to contribute to the understanding and quantification of the impact of very dense smoke clouds and BBD that directly and indirectly affected a densely populated area. All the events originated in a very particular and fragile region such as a river delta (with its specific native plants) were registered by using a multi-instrument approach (satellite as well as ground based devices). The analysis of these events, as detailed in this manuscript, was used as a scientific reference for the judicial claim made at the Supreme Court of Justice of Argentina by the National University of Rosario, against the authorities of the Entre Rios Province where the islands of the Parana river are placed, in order to take the necessary measures for the suspension of the biomass burning in these islands.
机译：在2008年的大部分时间里，阿根廷的巴拉那河三角洲岛发生了强烈的大火，这是由于异常干燥的时期以及农民使用火场土地清洁技术所造成的。 2008年4月，这些大火严重影响了附近地区及其居民，从罗萨里奥市到布宜诺斯艾利斯大城市。在这项工作中，我们介绍了在污染云传播到阿根廷中部地区期间获得的550 nm数据的卫星以及地面气溶胶光学深度（AOD）。在2008年4月18日当地时间10:35（= UT-3小时）使用卫星仪器MODIS / Terra在布宜诺斯艾利斯通过大气遥感记录了最高值（1.18）。当天，地面空气质量检测仪还测量出该月的最高总悬浮颗粒（TSP）值为2.02 mg / m〜3。罗萨里奥天文台（位于帕拉纳河沿岸）的AOD（550）日变化是通过将太阳紫外线红斑辐照度数据（用YES生物米测量）与模型计算相结合得出的。 2008年4月25日，当地时间12:00至15:30，记录了相当高且恒定的AOD（550）值，平均值为（0.90±0.21）。罗萨里奥-布宜诺斯艾利斯高速公路旁的城市（圣尼古拉斯，巴拉德罗和圣佩德罗）也受到了影响，罗萨里奥和布宜诺斯艾利斯之间的平均日均生活值为550。使用位于帕拉纳河岛屿和罗萨里奥天文台的网格化采样器收集颗粒物。他们用扫描电子显微镜（SEM）进行了分析，主要显示出其生物学起源。即使通常大颗粒与源之间的距离很小，在离岛上的气溶胶源几公里处也可以看到40-100μm范围内的有机气溶胶和复杂的不对称结构。由于极浓的烟云在罗萨里奥地区延伸了数小时，2008年9月18日发生了另一项强烈的紫外线指数衰减事件（98.6％）。东北风和东南风使云层脱离了大火。在中午左右测得的该指数的最小值允许在当地时间12:45导出最大AOD（550）_（max）=（3.65±0.90）。烟尘云蔓延到巴拉那河上，运送沉积在罗萨里奥（Rosario）的燃烧生物质碎片（BBD）。特别是，收集了尺寸为1-20厘米的烧焦的叶子和小树枝。当地时间7:00至19:00沉积在地面上的平均（BBD）粒子为（0.92±0.20）BBD /（m〜2 h）。本工作的主要目的是有助于理解和量化直接或间接影响人口稠密地区的非常浓的烟云和BBD的影响。所有事件都起源于一个非常特殊而脆弱的地区，例如三角洲（具有特定的本地植物），这是通过使用多仪器方法（卫星以及地面设备）进行记录的。本手稿中详细介绍的这些事件的分析，被罗萨里奥国立大学在阿根廷最高法院针对恩特雷里奥斯省当局在阿根廷最高法院的司法要求中用作司法参考。放置巴拉那河，以便采取必要措施中止这些岛屿中燃烧的生物质。

著录项

  • 来源
    《Advances in space research》 |2012年第5期|p.966-977|共12页
  • 作者

    A. Ipina; G.M. Salum; E. Crino; R.D. Piacentini;

  • 作者单位

    Institute de Fisica Rosario, CONICET-Universidad National de Rosario, Rosario, Argentina;

    Institute de Fisica Rosario, CONICET-Universidad National de Rosario, Rosario, Argentina,Facultad Regional Conception del Uruguay!Universidad Tecnologica National, Conception del Uruguay, Argentina;

    Facultad de Ciencias Fisico Matemdticasl Universidad National de San Luis, San Luis, Argentina;

    Institute de Fisica Rosario, CONICET-Universidad National de Rosario, Rosario, Argentina,Facultad de Ciencias Exactas, Ingenieria y AgrimensuralUniversidad National de Rosario, Rosario, Argentina;

  • 收录信息
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    smoke cloud; burned biomass debris; satellite data; ground data; parana river; delta island;

    机译：烟云燃烧的生物质碎片;卫星数据;地面数据;巴拉那河三角洲;

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号