Estimation of the temporal and spatial distribution of the optically thin Asian dust from satellite image data

根据卫星图像数据估计光学稀亚洲尘埃的时空分布

基本信息

  • 批准号:
    16510011
  • 负责人:
  • 金额:
    $ 2.18万
  • 依托单位:
  • 依托单位国家:
    日本
  • 项目类别:
    Grant-in-Aid for Scientific Research (C)
  • 财政年份:
    2004
  • 资助国家:
    日本
  • 起止时间:
    2004 至 2005
  • 项目状态:
    已结题

项目摘要

In general, it is very difficult to identify the widely spread hazy dust cloud in satellite images over the land surface. In this study, a new method for estimating the temporal and spatial distribution of the optically thin Asian dust was developed.(1)Polarization measurements of the sky radiation by the multi-spectral polarimeter have been carried out at the ground station in Kanazawa city, Japan from March to May in 2000 to 2005. In this study, (i) Web application system for retrieving degrees of polarization from the database of polarization measured properly by the polarimeter was made, and (ii) the method for estimating optical properties of Asian dust, such as the optical thickness, the number size distribution and the refractive index, and the ground reflectance from polarization data measured at angles of 75, 90, 105 and 120 degrees from the solar direction in the principal plane was developed.(2)A new algorithm for estimating optical properties of the hazy Asian dust and the ground reflectance simultaneously from ADEOSII/POLDER data over the land surface received at a single channel was developed. In order to evaluate the algorithm, degrees of polarization measured at the ground station are compared with those estimated from ADEOSII/POLDER data on May 3, 2003. As a result, it was found that the values of optical parameters of Asian dust estimated at the 670nm channel provide reasonable ones.(3)In order to estimate the temporal and spatial density distribution of Asian dust over East Asia, the long-range transport simulation model of dust particles was used. The released region and mass flux of Asian dust was determined such that the concentration of Asian dust obtained from the long-range transport simulation is almost equal to that of SPM (Suspended Particulate Matter) measured at various places in Japan.
一般来说,在陆地表面的卫星图像上很难识别出广泛分布的雾霾云。本研究发展了一种估算亚洲光学薄沙尘时空分布的新方法。(1)利用多光谱偏振仪对2000年3月至2005年5月在日本金泽市地面站的天空辐射进行了偏振测量。(1)建立了从偏振仪测量的偏振度数据库中提取偏振度的Web应用系统;(2)开发了从与主平面太阳方向成75度、90度、105度和120度的偏振数据估计亚洲尘埃的光学厚度、数量尺寸分布和折射率等光学性质以及地面反射率的方法。(2)发展了一种从单通道接收的陆地表面ADEOSII/POLDER数据同时估计亚洲灰尘的光学性质和地面反射率的新算法。为了对算法进行评估,将地面站测得的偏振度与2003年5月3日的ADEOSII/POLDER数据估计的偏振度进行了比较。结果表明,在670 nm波段估算的亚洲沙尘光学参数值是合理的。(3)为了估算亚洲沙尘在东亚上空的时空密度分布,采用了沙尘粒子长程输送模拟模式。确定了亚洲沙尘的释放区域和质量通量,使长程输送模拟得到的亚洲沙尘浓度与在日本各地测得的悬浮颗粒物(SPM)浓度几乎相等。

项目成果

期刊论文数量(22)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)
SPAデータと長距離輸送シミュレーションによる黄砂の濃度分布の比較
SPA数据与长距离输送模拟的黄尘浓度分布对比
SPMデータと長距離輸送シミュレーションによる黄砂の濃度分布の比較
使用SPM数据和长距离输送模拟的黄尘浓度分布比较
Simultaneous estimation of optical parameters of the Asian dust and ground reflectance from POLDER data
根据 POLDER 数据同时估计亚洲沙尘光学参数和地面反射率
A method for estimating optical properties of the Asian dust in the air and ground refrectance from satellite data
一种根据卫星数据估算空气中亚洲尘埃光学特性和地面反射率的方法
Optical properties of Asian dust estimated from ground based polarization measurements
根据地面偏振测量估算亚洲尘埃的光学特性
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KUSAKA Takashi其他文献

Mother-infant Interaction Induces Physiological Reactions in the Brain
母婴互动引起大脑生理反应
  • DOI:
  • 发表时间:
    2016
  • 期刊:
  • 影响因子:
    0
  • 作者:
    TANIMOTO Kimie;KATO Ikuko;KUSAKA Takashi;TOKUCHI Nobuko
  • 通讯作者:
    TOKUCHI Nobuko

KUSAKA Takashi的其他文献

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{{ truncateString('KUSAKA Takashi', 18)}}的其他基金

Strategy for hypoxic-ischemic encephalopathy in newborn infants to reduce oxygen free radicals by adjusting hydrogen and oxygen
调整氢氧减少氧自由基治疗新生儿缺氧缺血性脑病的策略
  • 批准号:
    22591201
  • 财政年份:
    2010
  • 资助金额:
    $ 2.18万
  • 项目类别:
    Grant-in-Aid for Scientific Research (C)
Developmental changes in cerebral oxygen metabolism during neonatal period
新生儿期脑氧代谢的发育变化
  • 批准号:
    19591281
  • 财政年份:
    2007
  • 资助金额:
    $ 2.18万
  • 项目类别:
    Grant-in-Aid for Scientific Research (C)
New optical brain imaging in infants by using near-infrared diffuse optical tomography
使用近红外漫射光学断层扫描对婴儿进行新的光学脑成像
  • 批准号:
    17390307
  • 财政年份:
    2005
  • 资助金额:
    $ 2.18万
  • 项目类别:
    Grant-in-Aid for Scientific Research (B)
Noninvasive optical imaging in the sensorimotor cortex in newborn infants.
新生儿感觉运动皮层的无创光学成像。
  • 批准号:
    15591159
  • 财政年份:
    2003
  • 资助金额:
    $ 2.18万
  • 项目类别:
    Grant-in-Aid for Scientific Research (C)
The estimation of the advection diffusion and the optical characteristics of the Asian dust using satellite_level data
利用卫星级数据估计亚洲沙尘的平流扩散和光学特性
  • 批准号:
    13680611
  • 财政年份:
    2001
  • 资助金额:
    $ 2.18万
  • 项目类别:
    Grant-in-Aid for Scientific Research (C)
Evaluation of Yellow Sand Dust in the Vegetation Index Estimated from Satellite-level Data
黄沙尘在卫星级数据估算植被指数中的评价
  • 批准号:
    10680508
  • 财政年份:
    1998
  • 资助金额:
    $ 2.18万
  • 项目类别:
    Grant-in-Aid for Scientific Research (C)
The development of the hypermedia CAI system on the Internet
互联网超媒体CAI系统的开发
  • 批准号:
    07558146
  • 财政年份:
    1995
  • 资助金额:
    $ 2.18万
  • 项目类别:
    Grant-in-Aid for Scientific Research (B)
Extraction of Global Environmental Change caused by Human Activities
人类活动引起的全球环境变化的提取
  • 批准号:
    04832042
  • 财政年份:
    1992
  • 资助金额:
    $ 2.18万
  • 项目类别:
    Grant-in-Aid for General Scientific Research (C)

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