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Satellite remote sensing, GIS and sun-photometers for monitoring PM_(10) in Cyprus: issues on public health

机译:卫星遥感,GIS和太阳光度计,用于监测塞浦路斯的PM_(10):公共卫生问题

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PM_(10) and PM _(2.5) particles are very significant issues for the public health of the community. Such parameters are measured from air-pollution stations that are scarcely distributed in the Cyprus region. Satellite remote sensing can provide synoptic coverage of the Cyprus area either daily from MODIS sensor or every 16 days from Landsat. Sun-photometers are used to measure the aerosol optical thickness (AOT) on ground during the satellite overpass. Several different campaigns have been made both for two urban areas in Paphos and Limassol area. For the period 28/10/09 -30/12/09, the regression analysis between PM_(10) and PM_(2.5) for the Paphos town (central) gave coefficient of determination of R~2=0,78 and R~2=0,61 respectively. Coefficient of determination R~2 =0.61 was found for the period May-June 2009 for the centre of Limassol when PM10 was regressed against AOT measured from MICROTOPS handheld sun-photometer. The AOT data retrieved from MODIS AOT (at 550 nm) and CIMEL sun-photometer (AERONET) also provided a high correlation (r=0.9, R~2 = 0.81) for the centre of Limassol for April to July 2010 measurements. Results obtained by correlating MODIS AOT (at 550 nm) against hand-held MICROTOPS sun-photometer in the centre of Limassol for the period January 2009 to March 2010 gave R~2=0,81. Using the PM_(10) limit of 50μg/m~3 as prescribed by the European Union and the regression model found for the Limassol area, a threshold value of AOT for this area of 0.6 was found. Such value can be used as threshold AOT values for alerts either using the MODIS or Landsat satellite imagery. An example of how a GIS can provide temporal variations of AOT over the Cyprus area is shown.
机译:PM_(10)和PM _(2.5)颗粒对于社区的公共健康而言是非常重要的问题。这些参数是从塞浦路斯地区几乎没有分布的空气污染站测得的。卫星遥感可以每天通过MODIS传感器或每16天从Landsat提供对塞浦路斯地区的天气覆盖。太阳光度计用于在卫星立交桥期间测量地面上的气溶胶光学厚度(AOT)。在帕福斯和利马索尔两个城市地区都开展了几项不同的运动。在2009年10月28日-30/12/09期间,帕福斯镇(中心)的PM_(10)和PM_(2.5)之间的回归分析得出确定系数R〜2 = 0,78和R〜 2 = 0.61。在MICROTOPS手持式日光光度计测量的PM10相对于AOT进行回归时,2009年5月至6月利马索尔中心的测定系数R〜2 = 0.61。从MODIS AOT(在550 nm)和CIMEL太阳光度计(AERONET)获得的AOT数据也为利马索尔中心提供了高度相关性(r = 0.9,R〜2 = 0.81),用于2010年4月至7月的测量。在2009年1月至2010年3月期间,将利马索尔中心的MICROTOPS手持式MICROTOPS太阳光度计与MODIS AOT(在550 nm处)相关联得到的结果为R〜2 = 0,81。使用欧盟规定的PM_(10)限值50μg/ m〜3和利马索尔地区的回归模型,发现该地区的AOT阈值为0.6。该值可用作使用MODIS或Landsat卫星图像发出警报的阈值AOT值。展示了一个GIS如何提供塞浦路斯地区AOT随时间变化的示例。

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