摘要
二氧化碳(C02)是大气中主要的温室气体,利用卫星平台观测大气干空气柱中对流层二氧化碳气体体积混合比(xco2)是当前温室气体监测的主流手段.首先介绍了5种具备近地面XCO2浓度观测能力的卫星平台,并以GOSAT卫星的短波红外二级数据产品为例,重点介绍了中国2009-2016年大气XCC>2浓度的时空变化情况.结果表明,中国XCO2浓度高值区主要出现在东南部,西部地区以及高纬度地区XCO2浓度相对较低.8年间XCO2平均浓度为392.28ppm,并以2.28ppm/a的速度持续增长.XCO2浓度随NDVI有明显的季节变化,春季最高,夏季最低,年平均变化量达到6.2ppm.
Carbon dioxide ( CO2 ) is the main greenhouse gas in the atmosphere. Using the satellite platform to observe the volumetric mixture ratio of tropospheric carbon dioxide in the atmospheric dry air column ( XCO2 ) is the mainstream means of current greenhouse gas monitoring. This paper first introduced five satellite platforms with near-surface XCO2 concentration observation capability,and took the short-wave infrared L2 data products of GOSAT as an example to introduce the spatial and temporal variations of atmospheric XCO2 concentration in China during 2009 to 2016. The results showed that the high concentrations area of XCO2 in China were mainly appeared in the southeast,and the concentrations of XCO2 in the west and high latitudes were relatively low. The average concentration of XCO2 during the 8 years was 392. 28 ppm and continued to increase at 2. 28 ppm per year. The XCO2 concentrations showed significant seasonal variations with NDVI,with the highest were in spring and the lowest were in summer,the average annual amplitude was 6. 2 ppm.
作者
吕政翰
赵越
Lv Zhenghan;Zhao Yue(Harbin Normal University;Key Laboratory of Remote Sensing and Monitoring of Geographical Environment)
出处
《哈尔滨师范大学自然科学学报》
CAS
2019年第2期93-99,共7页
Natural Science Journal of Harbin Normal University
关键词
C02浓度
卫星参数
时空变化
CO2 concentration
Satellite parameters
Spatial and temporal variation
