昆明地區(qū)的臭氧探測及地基臭氧總量反演方案的訂正研究
發(fā)布時間：2018-10-23 10:06
【摘要】：基于2013年11月至2015年4月在昆明地區(qū)開展的臭氧探空實(shí)驗(yàn),著眼于地基臭氧總量反演方案的修訂,首先利用所獲探空資料驗(yàn)證了微波臨邊探測器(MLS)和大氣紅外探測器(AIRS)衛(wèi)星臭氧廓線產(chǎn)品,然后對Brewer SO2柱總量進(jìn)行了訂正分析,討論了臭氧大氣質(zhì)量數(shù)(AMF)的近似計(jì)算和SO2含量對地基臭氧總量觀測的影響,評估了四個版本臭氧吸收截面(Bass和Paur發(fā)布的版本(BPQ);Chehade等人使用SCIAMACHY分光儀測量的版本(SAC);Daumont、Brion和Malicet發(fā)布的版本(DBM);Serdyuchenko等人發(fā)布的版本(SER))在總量反演中應(yīng)用,最后提出了地基臭氧總量的綜合訂正方案。結(jié)果表明：(1)MLS 4.2版臭氧產(chǎn)品質(zhì)量較3.3版在對流層有很大提高,在82.5hPa處偏差很大,平均為(80.5±65.1)%。AIRS臭氧產(chǎn)品不能正確地描述對流層及下平流層的臭氧分布和變化。(2)在使用探空資料計(jì)算臭氧有效高度和有效溫度時需要用衛(wèi)星數(shù)據(jù)補(bǔ)充高層缺失的部分才能有效減小誤差。(3)昆明市的SO2濃度主要集中在60 gg/m3以下,呈現(xiàn)出午后最低,上午9-10時最高的單峰形態(tài)分布。日變化主要受污染排放、太陽輻射和邊界層發(fā)展情況影響。(4)利用午后近地面SO2濃度數(shù)據(jù),訂正昆明Brewer光譜儀測量的SO2柱總量,通過調(diào)整明顯提高了Brewer觀測值和地面濃度轉(zhuǎn)換值的一致性。(5)當(dāng)天頂角大于60°時,AMF對“臭氧層”高度較敏感,“臭氧層”越高AMF值越低,地球曲率和大氣折射將使Dobson和Brewer近似產(chǎn)生顯著誤差(天頂角為85°時誤差可達(dá)4%)。(6)SO2的有效吸收系數(shù)△γAD=1.843, SO2存在將會導(dǎo)致Dobson臭氧總量比實(shí)際值偏高。從20世紀(jì)80年代至今,由于大氣中SO2的減少,使得其對Dobson臭氧總量的影響也隨之減小,但污染嚴(yán)重的時段,仍不容忽略。 (7)Brewer和Dobson反演算法不同的溫度依賴性,是導(dǎo)致兩儀器具有季節(jié)性系統(tǒng)偏差的原因。Brewer算法受溫度影響的程度小于Dobson,其溫度依賴性分別為0.102%℃-1和-0.005%℃-1(以SAC計(jì)算結(jié)果為例)。考慮了溫度對吸收系數(shù)的影響后,偏差的季節(jié)性特征得到有效抑制。反演結(jié)果對吸收截面的選擇比較敏感,其中,BPQ、DBM和SER的應(yīng)用使兩儀器偏差整體偏大,分別為2.92%,-2.57%和-1.83%,只有使用SAC時臭氧總量符合最好,偏差僅為0.03%。(8)綜合訂正方案能夠有效地縮小Brewer和Dobson觀測數(shù)據(jù)的偏差范圍,使兩組數(shù)據(jù)保持良好的一致性。在中低緯大氣比較清潔的觀測站,臭氧有效吸收系數(shù)對訂正的貢獻(xiàn)最大約占57.9～91.2%,SO2次之約占7.9～37.8%,AMF最小約占0.9～4.3%。
[Abstract]:Based on the ozone sounding experiments conducted in Kunming from November 2013 to April 2015, with an eye to the revision of the ground-based total ozone retrieval scheme, The ozone profile products of microwave edge detector (MLS) and atmospheric infrared detector (AIRS) satellite were verified by using the obtained radiosonde data, and the total amount of Brewer SO2 column was revised and analyzed. The approximate calculation of ozone mass number (AMF) and the effect of SO2 content on ground-based ozone total measurement are discussed. Four versions of ozone absorption cross sections (Bass and Paur release version (BPQ); Chehade et al.) using SCIAMACHY spectrometer measurements of (SAC); Daumont,Brion and Malicet release version (DBM); Serdyuchenko et al. Release (SER) were evaluated for total volume retrieval. Finally, a comprehensive revised scheme for the total amount of ozone in the foundation is put forward. The results show that: (1) the quality of ozone product of MLS 4.2 is much higher than that of version 3.3 in troposphere, and the deviation is very large at 82.5hPa. The average value is (80.5 鹵65.1)%. The AIRS ozone product can not correctly describe the ozone distribution and variation in the troposphere and the lower stratosphere. (2) when using the sounding data to calculate the effective altitude and effective temperature of ozone, satellite data should be used to replace the missing parts of the upper layer. (3) the concentration of SO2 in Kunming is mainly below 60 gg/m3. The distribution of single peak was the lowest in the afternoon and the highest in the morning. The diurnal variation is mainly affected by the pollution emission, solar radiation and the development of boundary layer. (4) the total amount of SO2 column measured by Kunming Brewer spectrometer is revised by using the data of SO2 concentration near the ground in the afternoon. The consistency between the observed values of Brewer and the conversion values of ground concentrations is improved obviously by adjusting. (5) when the vertex angle is greater than 60 擄, AMF is more sensitive to the "ozone layer", and the higher the "ozone layer" is, the lower the AMF value is. The existence of the effective absorption coefficient 緯 AD=1.843, SO2 of Dobson and Brewer (up to 4%). (6 at the zenith angle of 85 擄) will result in a higher total amount of Dobson ozone than the actual value due to the existence of the effective absorption coefficient 緯 AD=1.843, SO2 of the earth curvature and atmospheric refraction. From the 1980s to the present, due to the decrease of SO2 in the atmosphere, its influence on the total amount of Dobson ozone is also reduced, but the serious pollution period should not be ignored. (7) the temperature dependence of Brewer and Dobson inversion algorithms is different, which leads to the seasonal system deviation of the two instruments. The temperature dependence of Brewer algorithm is less than that of Dobson, whose temperature dependence is 0.102% 鈩，
本文編號：2288913
[Abstract]:Based on the ozone sounding experiments conducted in Kunming from November 2013 to April 2015, with an eye to the revision of the ground-based total ozone retrieval scheme, The ozone profile products of microwave edge detector (MLS) and atmospheric infrared detector (AIRS) satellite were verified by using the obtained radiosonde data, and the total amount of Brewer SO2 column was revised and analyzed. The approximate calculation of ozone mass number (AMF) and the effect of SO2 content on ground-based ozone total measurement are discussed. Four versions of ozone absorption cross sections (Bass and Paur release version (BPQ); Chehade et al.) using SCIAMACHY spectrometer measurements of (SAC); Daumont,Brion and Malicet release version (DBM); Serdyuchenko et al. Release (SER) were evaluated for total volume retrieval. Finally, a comprehensive revised scheme for the total amount of ozone in the foundation is put forward. The results show that: (1) the quality of ozone product of MLS 4.2 is much higher than that of version 3.3 in troposphere, and the deviation is very large at 82.5hPa. The average value is (80.5 鹵65.1)%. The AIRS ozone product can not correctly describe the ozone distribution and variation in the troposphere and the lower stratosphere. (2) when using the sounding data to calculate the effective altitude and effective temperature of ozone, satellite data should be used to replace the missing parts of the upper layer. (3) the concentration of SO2 in Kunming is mainly below 60 gg/m3. The distribution of single peak was the lowest in the afternoon and the highest in the morning. The diurnal variation is mainly affected by the pollution emission, solar radiation and the development of boundary layer. (4) the total amount of SO2 column measured by Kunming Brewer spectrometer is revised by using the data of SO2 concentration near the ground in the afternoon. The consistency between the observed values of Brewer and the conversion values of ground concentrations is improved obviously by adjusting. (5) when the vertex angle is greater than 60 擄, AMF is more sensitive to the "ozone layer", and the higher the "ozone layer" is, the lower the AMF value is. The existence of the effective absorption coefficient 緯 AD=1.843, SO2 of Dobson and Brewer (up to 4%). (6 at the zenith angle of 85 擄) will result in a higher total amount of Dobson ozone than the actual value due to the existence of the effective absorption coefficient 緯 AD=1.843, SO2 of the earth curvature and atmospheric refraction. From the 1980s to the present, due to the decrease of SO2 in the atmosphere, its influence on the total amount of Dobson ozone is also reduced, but the serious pollution period should not be ignored. (7) the temperature dependence of Brewer and Dobson inversion algorithms is different, which leads to the seasonal system deviation of the two instruments. The temperature dependence of Brewer algorithm is less than that of Dobson, whose temperature dependence is 0.102% 鈩，
本文編號：2288913
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