溫室氣體(GHGs)對評估生物化學環(huán)境是一個有力的信息。在全球變暖這一背景下,大氣中溫室氣體的聚散成為觀測氣候變化的關鍵,尤其是溫室氣體對全球溫度的上升影響重大。大氣中的二氧化碳(CO₂)和甲烷(CH₄)是主要的溫室氣體組成部分,而這兩種氣體的增加與人類活動息息相關。使用皮爾遜相關性模型,對GOSAT數據與東北部的龍鳳山(LFS)和西北部的瓦利關(WLG)站點數據做相關性分析,以求得到衛(wèi)星數據和地面站點之間的關系。結果發(fā)現,在研究區(qū)東北部,不論是CO₂還是CH₄的監(jiān)測結果,GOSAT和LFS站點數據都具有很強的相關性(r=0.92671,r=0.93905)。而在研究區(qū)的西北部也是如此,即GOSAT和WLG站點對于CO₂和CH₄的監(jiān)測數據都有很強的相關性(r=0.93794,r=0.92413)。用溫室氣體觀測衛(wèi)星(GOSAT)的數據,研究了2010-2018年兩種主要溫室氣體(CO₂和CH₄)濃度的時空變化特征...

【文章頁數】：88 頁

【學位級別】：碩士

【文章目錄】：
摘要
Abstract
Abbreviations
Chapter1 Introduction
    1.1 Background
    1.2 Greenhouse gases
        1.2.1 CO₂ concentration,cycle and emissions by sector
        1.2.2 CO₂ concentration,cycle and emissions by sector
        1.2.3 CO₂,CH₄ emission pathways
        1.2.4 Emission of CO₂ and CH₄ across different scale
    1.3 Source of GHGs in China
    1.4 CO₂ and CH₄ dynamics
    1.5 CO₂and CH₄ concentration in different scenarios
    1.6 Aim of the research
Chapter 2 Data and methods
    2.1 Study area
        2.1.1 CO₂distribution in China
        2.1.2 CH₄distribution in China
    2.2 Data
        2.2.1 Greenhouse gas observation of GOSAT satellite
        2.2.2 XCO2 level 3
        2.2.3 XCH4 level 3
        2.2.4 Ground station data
    2.3 Data processing scheme
Chapter3 Spatiotemporal variation of CO2 and CH4
    3.1 Validation of GOSAT data
        3.1.1 Northeastern region
        3.1.2 Northwestern region
    3.2 Monthly variation
        3.2.1 Northeastern region
        3.2.2 Northwestern region
    3.3 Seasonal variation
        3.3.1 Northeastern region
        3.3.2 Northwestern region
    3.4 Annual variation
        3.4.1 Northeastern region
        3.4.2 Northwestern region
Chapter 4 Reasons for variation of CO2 and CH4
    4.1 Reasons for variation of CO₂ and CH₄in Northeastern China
    4.2 Reasons for variation of CO₂ and CH₄in Northeastern China
    4.3 Impact of GHGs on climate change
Chapter5 Conclusion and outlook
    5.1 Conclusion
    5.2 Outlook
References
Acknowledgment



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