黄渤海悬浮颗粒物粒径遥感反演研究
发布时间：2018-08-07 13:58
【摘要】：悬浮颗粒物粒径是重要的海洋光学参数,在以悬浮颗粒物为主的黄渤海海域,对水体生物,化学过程等起着重要的作用,对其含量和分布特征研究有助于加深对黄渤海生态环境的认识,该参数的卫星遥感反演也对海洋光学与水色遥感研究具有重要意义。本文针对悬浮颗粒物粒径与遥感反射率之间的关系,主要做了以下几个方面工作：(1)利用201405、201411以及201508三个航次匹配的实测光学数据,分别建立了基于GOCI、MODIS以及MERIS三种卫星波段设置的遥感反射率单波段或波段比与悬浮颗粒物粒径D25、D50以及D75之间的反演模型,对模型进行反演精度检验以及敏感性分析并对异常数据分布进行初步分析。整体而言,基于GOCI、MODIS卫星波段设置建立的模型优于MERIS,反演的D25、Dso模型优于D75模型。(2)基于GOCI卫星月合成数据反演出粒径时空分布图,将反演数据与实测数据进行精度经验,并分析三种粒径的月变化以及近三年变化趋势,结果表明,三种粒径反演的粒径在低值区以及高值区反演误差较大,中间部分反演误差较小,从沿岸到深海粒径以及粒径变化幅度逐渐增大,上半年粒径低于下半年,近三年变化较小,无明显变化规律。(3)基于实测数据,研究了悬浮颗粒物体积浓度、粒子数浓度、粒径等光学参量与固有光学参数(主要是衰减系数和颗粒物后向散射系数)之间的关系；对参数进行光谱建模,并讨论了模型的适用性。结果表明,悬浮颗粒物后向散射系数与各光学参数相关性较好,衰减系数与体积浓度以及粒子数浓度相关性较好,与粒径相关性较差。
[Abstract]:The particle size of suspended particles is an important optical parameter of the ocean, which plays an important role in the biological and chemical processes in the Yellow Sea and Bohai Sea, where suspended particulates are the main ones. The study of its content and distribution is helpful to the understanding of the ecological environment of the Yellow Sea and Bohai Sea. The satellite remote sensing inversion of this parameter is also of great significance to the study of ocean optical and water color remote sensing. Aiming at the relationship between particle size and remote sensing reflectivity of suspended particulates, the following works have been done in this paper: (1) using the measured optical data of 201405, 201411 and 201508, The inversion models of remote sensing reflectivity between single band or band ratio and particle size D25 / D50 and D75 are established based on GOCIMODIS and MERIS satellite bands, respectively. The inversion accuracy and sensitivity of the model are tested and the distribution of abnormal data is preliminarily analyzed. On the whole, the model based on GOCII MODIS satellite band setting is superior to MERIS, and the inverse D25 Dso model is superior to D75 model. (2) based on the GOCI satellite monthly composite data, the particle size space-time distribution map is inversed, and the precision of the inversion data and the measured data is obtained. The results show that the inversion error of the three particle sizes in the low value region and the high value region is large, and the inversion error of the middle part is small. The change of particle size and particle size from coastal to deep sea gradually increased, the particle size in the first half of the year was lower than that in the second half, and the change was small in the last three years. (3) based on the measured data, the volume concentration and particle number concentration of suspended particles were studied. The relationship between the optical parameters such as particle size and intrinsic optical parameters (mainly attenuation coefficient and backscattering coefficient of particles), the spectral modeling of the parameters and the applicability of the model are discussed. The results show that the backscattering coefficient of suspended particles has a good correlation with the optical parameters, the attenuation coefficient has a better correlation with the volume concentration and the particle number concentration, and the correlation with the particle size is poor.
【学位授予单位】：南京信息工程大学
【学位级别】：硕士
【学位授予年份】：2016
【分类号】：P715.7;P734.2
本文编号：2170242
[Abstract]:The particle size of suspended particles is an important optical parameter of the ocean, which plays an important role in the biological and chemical processes in the Yellow Sea and Bohai Sea, where suspended particulates are the main ones. The study of its content and distribution is helpful to the understanding of the ecological environment of the Yellow Sea and Bohai Sea. The satellite remote sensing inversion of this parameter is also of great significance to the study of ocean optical and water color remote sensing. Aiming at the relationship between particle size and remote sensing reflectivity of suspended particulates, the following works have been done in this paper: (1) using the measured optical data of 201405, 201411 and 201508, The inversion models of remote sensing reflectivity between single band or band ratio and particle size D25 / D50 and D75 are established based on GOCIMODIS and MERIS satellite bands, respectively. The inversion accuracy and sensitivity of the model are tested and the distribution of abnormal data is preliminarily analyzed. On the whole, the model based on GOCII MODIS satellite band setting is superior to MERIS, and the inverse D25 Dso model is superior to D75 model. (2) based on the GOCI satellite monthly composite data, the particle size space-time distribution map is inversed, and the precision of the inversion data and the measured data is obtained. The results show that the inversion error of the three particle sizes in the low value region and the high value region is large, and the inversion error of the middle part is small. The change of particle size and particle size from coastal to deep sea gradually increased, the particle size in the first half of the year was lower than that in the second half, and the change was small in the last three years. (3) based on the measured data, the volume concentration and particle number concentration of suspended particles were studied. The relationship between the optical parameters such as particle size and intrinsic optical parameters (mainly attenuation coefficient and backscattering coefficient of particles), the spectral modeling of the parameters and the applicability of the model are discussed. The results show that the backscattering coefficient of suspended particles has a good correlation with the optical parameters, the attenuation coefficient has a better correlation with the volume concentration and the particle number concentration, and the correlation with the particle size is poor.
【学位授予单位】：南京信息工程大学
【学位级别】：硕士
【学位授予年份】：2016
【分类号】：P715.7;P734.2
【相似文献】
相关期刊论文 前4条
1 王晨波;;不同大气污染状态下的颗粒物粒径分布特征分析[J];科技信息;2013年17期
2 周燕;刘士莉;漆轩;;成都东区大气分级颗粒中酸性阴离子的测定及危害性分析[J];四川地质学报;2011年S2期
3 叶翔;李炎;黄邦钦;胡毅;陈坚;;2004年夏季台湾海峡上升流海域悬浮颗粒物粒径谱分析[J];海洋学报(中文版);2008年02期
4 ;[J];;年期
相关会议论文 前3条
1 尚羽;朱彤;李怡;;颗粒物粒径对·OH生成影响的初步研究[A];中国化学会第二十五届学术年会论文摘要集（上册）[C];2006年
2 周燕;刘士莉;漆轩;;成都东区大气分级颗粒中酸性阴离子的测定及危害性分析[A];2011四川省水文、工程、环境地质学术交流会论文集[C];2011年
3 张涛;王伯光;张仁健;陶俊;;广州城区春季颗粒物粒径分布及其对能见度影响初探[A];第十届全国气溶胶会议暨第六届海峡两岸气溶胶技术研讨会摘要集[C];2009年
相关重要报纸文章 前1条
1 丁继武;风沙袭过的健康问题[N];中国气象报;2002年
相关硕士学位论文 前2条
1 陈鬃;柴油机颗粒物分形维数与碳组分的研究[D];江苏大学;2016年
2 陈亚慧;黄渤海悬浮颗粒物粒径遥感反演研究[D];南京信息工程大学;2016年
，本文编号：2170242
本文链接：https://www.wllwen.com/kejilunwen/haiyang/2170242.html
