CN106291504A - 一种利用静止气象卫星多时相观测数据反演表层土壤体积含水量的方法 - Google Patents

一种利用静止气象卫星多时相观测数据反演表层土壤体积含水量的方法 Download PDF

Info

Publication number
CN106291504A
CN106291504A CN201510299584.1A CN201510299584A CN106291504A CN 106291504 A CN106291504 A CN 106291504A CN 201510299584 A CN201510299584 A CN 201510299584A CN 106291504 A CN106291504 A CN 106291504A
Authority
CN
China
Prior art keywords
soil moisture
earth
wave radiation
model
surface temperature
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201510299584.1A
Other languages
English (en)
Inventor
宋小宁
李召良
冷佩
唐伯惠
李小涛
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
University of Chinese Academy of Sciences
Institute of Agricultural Resources and Regional Planning of CAAS
Original Assignee
University of Chinese Academy of Sciences
Institute of Agricultural Resources and Regional Planning of CAAS
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by University of Chinese Academy of Sciences, Institute of Agricultural Resources and Regional Planning of CAAS filed Critical University of Chinese Academy of Sciences
Priority to CN201510299584.1A priority Critical patent/CN106291504A/zh
Publication of CN106291504A publication Critical patent/CN106291504A/zh
Pending legal-status Critical Current

Links

Classifications

    • GPHYSICS
    • G01MEASURING; TESTING
    • G01SRADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S7/00Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
    • G01S7/48Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S17/00
    • G01S7/4802Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S17/00 using analysis of echo signal for target characterisation; Target signature; Target cross-section
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01SRADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S17/00Systems using the reflection or reradiation of electromagnetic waves other than radio waves, e.g. lidar systems
    • G01S17/88Lidar systems specially adapted for specific applications
    • G01S17/95Lidar systems specially adapted for specific applications for meteorological use
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02ATECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A90/00Technologies having an indirect contribution to adaptation to climate change
    • Y02A90/10Information and communication technologies [ICT] supporting adaptation to climate change, e.g. for weather forecasting or climate simulation

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • General Physics & Mathematics (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Electromagnetism (AREA)
  • Radiation Pyrometers (AREA)

Abstract

本发明公开了一种利用静止气象卫星多时相观测数据反演表层土壤体积含水量的方法,主要包括:土壤水分反演模型;利用静止气象卫星数据定量反演地表温度与地表短波净辐射,对地表温度与地表短波净辐射进行无量纲化处理,对多时相的地表温度与地表短波净辐射进行椭圆拟合,得到每个像元对应的椭圆参数,将其作为土壤水分反演模型的输入数据;模型系数的获取方法;对地表温度与地表短波净辐射进行无量纲化处理的具体要求。本发明解决了当前的光学和热红外遥感土壤水分反演方法因极轨卫星数据信息的缺乏所遇到的问题。

Description

一种利用静止气象卫星多时相观测数据反演表层土壤体积含水量的方法
技术领域
本发明涉及一种利用静止气象卫星多时相观测数据反演表层土壤体积含水量的方法。
背景技术
土壤水分是水分平衡和能量平衡的关键参数之一,是联系地表水、地下水和生物地球循环的核心和纽带,在水文、气候、农业和生态等研究领域都具有十分重要的作用。当前的光学和热红外遥感土壤水分反演方法,它们大多数均是在极轨卫星对地观测的基础上发展而来。极轨卫星数据信息(一天最多一至二幅)的缺乏,一定程度上导致了遥感土壤水分反演中存在的某些问题迟迟得不到很好的解决,如通常需要建立遥感反演的地表参数(热惯量,温度植被干旱指数以及蒸散发等)与地表土壤水分观测的经验关系来反演区域土壤水分,无法直接反演得到定量的土壤体积含水量等。考虑到静止气象卫星能够对地表每天进行多次观测(一天48-96个时像),将静止气象卫星这种时间信息和空间信息结合起来,发展直接定量反演表层土壤水分方法,是一条获取区域土壤水分信息的新思路。
发明内容
本研究的主要目标是利用静止气象卫星每日多时相的特点,通过提取与土壤水分密切相关的地表参数日变化信息,发展一种新的基于静止气象卫星数据直接定量反演自然地表植被与土壤质地连续变化条件下的表层土壤体积含水量的方法。
本发明是这样实现的,一种利用静止气象卫星多时像观测数据反演表层土 壤体积含水量的方法,包括:
A、土壤水分反演模型表达式:
SSM=n1·x0+n2·y0+n3·a+n4·θ+n0 (1)
其中,SSM是每天平均土壤水分,x0,y0,a和θ是白天地表温度和地表短波净辐射之间椭圆关系模型的椭圆参数,分别表示椭圆中心横坐标,纵坐标,半长轴和椭圆旋转角;ni(i=0,1,2,3,4)是每天的模型系数。
B、椭圆参数的获取
利用静止气象卫星数据定量反演白天时间序列(8:00-16:00)的地表温度与地表短波净辐射,对地表温度与地表短波净辐射进行无量纲化处理,对多时相的地表温度与地表短波净辐射进行椭圆拟合,得到每个像元对应的椭圆参数(x0,y0,a,θ),将其作为土壤水分反演模型的输入数据。
C、模型系数的获取
方法一:在气象数据的驱动下,利用通用陆面过程模型CoLM(Common Land Model)模拟不同下垫面条件下的地表温度、地表短波净辐射与土壤水分。将模拟的地表温度与地表短波净辐射进行无量纲化处理,并进行椭圆拟合,得到椭圆参数(x0,y0,a,θ),同时将模拟的土壤水分取平均值得到每天平均土壤水分(SSM)。利用公式(1)对SSM与椭圆参数(x0,y0,a,θ)进行拟合,获得模型系数ni(i=0,1,2,3,4);
方法二:在气象数据不满足CoLM模拟需求的情况下,利用至少五组地表土壤水分观测数据与对应的遥感数据获得的椭圆参数(x0,y0,a,θ),利用上面的公式(1)进行拟合,获得模型系数ni(i=0,1,2,3,4)。
D、表层土壤水分反演
利用获取的模型系数与遥感数据得到的椭圆参数,利用土壤水分反演模型(1) 直接计算表层土壤水分含量(m3/m3)。
步骤B和C中所述无量纲化处理,设置的最大和最小地表温度分别是325K和275K,设置的最大和最小地表短波净辐射分别是1200W/m2和0W/m2
本发明提出的表层土壤水分反演模型独立于土壤质地,能够直接定量反演自然地表(植被覆盖度小于0.7,土壤中粘土含量低于30%条件下)表层土壤水分。
附图说明
图1是发展土壤水分反演模型的研究流程图;
图2是利用静止气象卫星数据与地表土壤水分观测数据获取模型系数的方法示意图;
图3是基于欧洲第二代静止气象卫星与地表土壤水分观测数据获得的模型系数反演的研究区多天平均土壤水分与实测平均土壤水分的对比;
具体实施方式
图1显示了发展本研究的土壤水分反演模型的研究流程图。在数据模拟中,我们考虑了不同的植被覆盖度,土壤质地和土壤水分。在得到模拟数据后,我们利用一个多元线性逐步回归的方法,确定了土壤水分反演模型中的椭圆参数(x0y0,a,θ)。
图2显示了利用静止气象卫星数据与地表土壤水分观测数据获取模型系数的方法。其中,晴天条件下静止气象卫星数据反演的地表温度和地表短波净辐射进行无量纲化处理,利用最小二乘法拟合得到地表温度和地表短波净辐射的椭圆关系模型,并计算椭圆参数。同时,对像元内的土壤水分观测数据择取平均值,表示该像元日平均土壤水分。
图3是利用图2方法获得了模型系数之后,基于欧洲第二代静止气象卫星数据反演的研究区(西班牙REMEDHUS土壤水分观测网络)2010多个晴天平均的土壤水分与实测的土壤水分的散点图。

Claims (4)

1.利用静止气象卫星多时相观测数据反演表层土壤体积含水量的方法,其特征在于:土壤水分反演模型表达式SSM=n1·x0+n2·y0+n3·a+n4·θ+n0,其中,SSM是每天平均土壤水分,x0,y0,a和θ是白天地表温度和地表短波净辐射之间椭圆关系模型的椭圆参数,分别表示椭圆中心横坐标,纵坐标,半长轴和椭圆旋转角,ni(i=0,1,2,3,4)是每天的模型系数。
2.土壤水分反演模型中的椭圆参数的获取方法:利用静止气象卫星数据定量反演白天时间序列(8:00-16:00)的地表温度与地表短波净辐射,对地表温度与地表短波净辐射进行无量纲化处理,对多时相的地表温度与地表短波净辐射进行椭圆拟合,得到每个像元对应的椭圆参数(x0,y0,a,θ),将其作为土壤水分反演模型的输入数据。
3.土壤水分反演模型中模型系数的获取方法:在气象数据的驱动下,利用通用陆面过程模型CoLM(Common Land Model)模拟不同下垫面条件下的地表温度、地表短波净辐射与土壤水分,将模拟的地表温度与地表短波净辐射进行无量纲化处理,并进行椭圆拟合,得到椭圆参数(x0,y0,a,θ),同时将模拟的土壤水分取平均值得到每天平均土壤水分(SSM),利用土壤水分反演模型对SSM与椭圆参数(x0,y0,a,θ)进行拟合,获得模型系数ni(i=0,1,2,3,4);在气象数据不满足CoLM模拟需求的情况下,利用至少五组地表土壤水分观测数据与对应的遥感数据获得的椭圆参数(x0,y0,a,θ),利用土壤水分反演模型进行拟合,获得模型系数ni(i=0,1,2,3,4)。
4.地表温度与地表短波净辐射进行无量纲化处理的具体要求:设置的最大和最小地表温度分别是325K和275K,设置的最大和最小地表短波净辐射分别是1200W/m2和0W/m2
CN201510299584.1A 2015-06-05 2015-06-05 一种利用静止气象卫星多时相观测数据反演表层土壤体积含水量的方法 Pending CN106291504A (zh)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201510299584.1A CN106291504A (zh) 2015-06-05 2015-06-05 一种利用静止气象卫星多时相观测数据反演表层土壤体积含水量的方法

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201510299584.1A CN106291504A (zh) 2015-06-05 2015-06-05 一种利用静止气象卫星多时相观测数据反演表层土壤体积含水量的方法

Publications (1)

Publication Number Publication Date
CN106291504A true CN106291504A (zh) 2017-01-04

Family

ID=57655282

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201510299584.1A Pending CN106291504A (zh) 2015-06-05 2015-06-05 一种利用静止气象卫星多时相观测数据反演表层土壤体积含水量的方法

Country Status (1)

Country Link
CN (1) CN106291504A (zh)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107506779A (zh) * 2017-07-04 2017-12-22 北京林业大学 一种植物茎干含水量的估算方法及系统
CN110618144A (zh) * 2019-09-26 2019-12-27 中国水利水电科学研究院 一种快速测定黄土塬区泉眼位置的方法
CN113533379A (zh) * 2021-07-19 2021-10-22 自然资源部国土卫星遥感应用中心 一种利用多源卫星亮温数据提取区域日均土壤水分的方法

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20120053806A (ko) * 2010-11-18 2012-05-29 서울대학교산학협력단 토양 수분 거동 특성을 고려한 관수 제어방법 및 그에 적용되는 깊이 조절형 토양수분퍼텐셜 측정장치
CN103645295A (zh) * 2013-12-03 2014-03-19 中国科学院遥感与数字地球研究所 一种多层土壤水分模拟方法和系统
CN103810387A (zh) * 2014-02-13 2014-05-21 中国科学院地理科学与资源研究所 基于modis数据的地表蒸散发全遥感反演方法及系统

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20120053806A (ko) * 2010-11-18 2012-05-29 서울대학교산학협력단 토양 수분 거동 특성을 고려한 관수 제어방법 및 그에 적용되는 깊이 조절형 토양수분퍼텐셜 측정장치
CN103645295A (zh) * 2013-12-03 2014-03-19 中国科学院遥感与数字地球研究所 一种多层土壤水分模拟方法和系统
CN103810387A (zh) * 2014-02-13 2014-05-21 中国科学院地理科学与资源研究所 基于modis数据的地表蒸散发全遥感反演方法及系统

Non-Patent Citations (6)

* Cited by examiner, † Cited by third party
Title
《REMOTE SENS》 *
《中国沙漠》 *
《中国生态农业学报》 *
PEI LENG 等: ""Toward the Estimation of Surface Soil Moisture Content Using Geostationary Satellite Data over Sparsely Vegetated Area"", 《REMOTE SENS》 *
伍漫春 等: ""基于地表温度-植被指数特征空间的区域土壤水分反演"", 《中国沙漠》 *
张霄羽 等: ""风云二号静止气象卫星数据估算土壤表面水分方法研究"", 《中国生态农业学报》 *

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107506779A (zh) * 2017-07-04 2017-12-22 北京林业大学 一种植物茎干含水量的估算方法及系统
CN107506779B (zh) * 2017-07-04 2020-06-30 北京林业大学 一种植物茎干含水量的估算方法及系统
CN110618144A (zh) * 2019-09-26 2019-12-27 中国水利水电科学研究院 一种快速测定黄土塬区泉眼位置的方法
CN113533379A (zh) * 2021-07-19 2021-10-22 自然资源部国土卫星遥感应用中心 一种利用多源卫星亮温数据提取区域日均土壤水分的方法

Similar Documents

Publication Publication Date Title
Verma et al. Evaluation of HEC-HMS and WEPP for simulating watershed runoff using remote sensing and geographical information system
Abushandi et al. Modelling rainfall runoff relations using HEC-HMS and IHACRES for a single rain event in an arid region of Jordan
Karim et al. Assessing the impacts of climate change and dams on floodplain inundation and wetland connectivity in the wet–dry tropics of northern Australia
Alatorre et al. Soil erosion and sediment delivery in a mountain catchment under scenarios of land use change using a spatially distributed numerical model
Gasparri et al. Regional patterns and controls of biomass in semiarid woodlands: lessons from the Northern Argentina Dry Chaco
CN105912836B (zh) 一种纯遥感数据驱动的流域水循环模拟方法
Kelley et al. Maximum late Holocene extent of the western Greenland Ice Sheet during the late 20th century
Conradt et al. Three perceptions of the evapotranspiration landscape: comparing spatial patterns from a distributed hydrological model, remotely sensed surface temperatures, and sub-basin water balances
Dhawale Runoff estimation for Darewadi watershed using RS and GIS
Wu et al. Agricultural landscape change in China's Yangtze Delta, 1942–2002: A case study
Wu et al. Modelling the impact of recent land‐cover changes on the stream flows in northeastern Puerto Rico
Trinh et al. Integrating global land-cover and soil datasets to update saturated hydraulic conductivity parameterization in hydrologic modeling
Montazar et al. Determination of actual evapotranspiration and crop coefficients of California date palms using the residual of energy balance approach
Hafeez et al. A new integrated continental hydrological simulation system
CN106291504A (zh) 一种利用静止气象卫星多时相观测数据反演表层土壤体积含水量的方法
Chinnasamy et al. Sustainable development of water resources in marginalised semi‐arid regions of India: Case study of Dahod in Gujarat, India
Western et al. An evaluation of a methodology for seasonal soil water forecasting for Australian dry land cropping systems
Ackermann et al. Nari (calcrete) outcrop contribution to ancient agricultural terraces in the Southern Shephelah, Israel: insights from digital terrain analysis and a geoarchaeological field survey
Steudel et al. Implementing contour bank farming practices into the J2000 model to improve hydrological and erosion modelling in semi-arid Western Cape Province of South Africa
Mandare et al. On-farm water management in saline groundwater area under scarce canal water supply condition in the Northwest India
Bunting et al. Insights for empirically modeling evapotranspiration influenced by riparian and upland vegetation in semiarid regions
Sreeja et al. Climate and Land use change impacts on sub-sea level rice farming in a tropical deltaic wetland
Csáki et al. Hydrological impacts of various land cover types in the context of climate change for Zala County
Hassan et al. Mathematical modeling of rainwater harvesting system for ungauged catchment area
Obuobie et al. Using SWAT to evaluate climate change impact on water resources in the White Volta River Basin, West Africa

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
WD01 Invention patent application deemed withdrawn after publication
WD01 Invention patent application deemed withdrawn after publication

Application publication date: 20170104