本文選題：大氣甲烷 + 時(shí)空分布特征��； 參考：《中國環(huán)境科學(xué)》2017年08期

【摘要】：利用AIRS反演結(jié)果與瓦里關(guān)大氣本底站甲烷濃度觀測(cè)資料進(jìn)行了對(duì)比分析,并對(duì)2003~2015年青藏高原對(duì)流層大氣甲烷濃度的分布變化特征進(jìn)行研究分析.結(jié)果表明:AIRS反演資料與瓦里關(guān)觀測(cè)資料具有一致的月、年、季度變化趨勢(shì)和分段變化特征.青藏高原甲烷濃度沿羌塘高原東緣——三江源西北地區(qū)一線,東南高、西北低,隨高度上升呈現(xiàn)顯著降低趨勢(shì),高原中部偏南地區(qū)甲烷濃度變率最大且異常敏感.2003~2015年青藏高原甲烷濃度持續(xù)上升,秋季最快、冬季最慢,年增長速度為5.2nmol/(mol?a),2013~2015期間小于全球增速;季節(jié)變化為典型單峰分布,夏季最高,春季最低,隨著高度上升季節(jié)變化更為明顯.
[Abstract]:The methane concentration distribution in the troposphere over the Qinghai-Xizang Plateau from 2003 to 2015 is analyzed and compared with the methane concentration observed at the Waliguan atmospheric background station by using the results of the airs inversion and the observational data of methane concentration in the tropospheric atmosphere of the Tibetan Plateau from 2003 to 2015. The results show that the change trend and the segmental change characteristics of the inversion data are consistent with those of the Variguan observational data in terms of month, year, and quarter. The methane concentration in the Qinghai-Tibet Plateau is high in the southeast and low in the northwest along the eastern margin of the Qiangtang Plateau-the source of the three rivers. The change rate of methane concentration in the south-central part of the plateau is the largest and extremely sensitive. From 2003 to 2015, the methane concentration in Qinghai-Xizang Plateau continued to rise, the fastest in autumn and the slowest in winter. The annual growth rate was 5.2nmol / mol / L during the period of 20132015, which was smaller than the global growth rate, and the seasonal variation was typical single-peak distribution. The highest in summer and the lowest in spring, the seasonal variation is more obvious with the height rising.
【作者單位】： 中國科學(xué)院西北生態(tài)環(huán)境資源研究院;中國科學(xué)院大學(xué);中國氣象局綜合觀測(cè)司;
【基金】：國家自然科學(xué)基金項(xiàng)目(91437108) 中國科學(xué)院西北生態(tài)環(huán)境資源研究所青年基金項(xiàng)目(51Y651L01)
【分類號(hào)】：X51
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本文編號(hào)：2022646