利用衛(wèi)星微波觀測亮溫與云輻射模擬亮溫的臺風(fēng)定位分析

doi:10.12306/2022jms.0064

首頁 > 過刊瀏覽>2022年第42卷第4期 >457-466. DOI:10.12306/2022jms.0064

利用衛(wèi)星微波觀測亮溫與云輻射模擬亮溫的臺風(fēng)定位分析
DOI:
                        10.12306/2022jms.0064
                    
CSTR:
                        
                    
作者:
                        
                        
                    
作者單位:
作者簡介:
通訊作者:
中圖分類號:P407.7
基金項目:國家重點研發(fā)計劃資助項目(2018YFC1507004)

Analysis of hurricane centers determined by microwave observations and cloudy simulations of brightness temperature

Author:

Affiliation:

Fund Project:

摘要

圖/表

訪問統(tǒng)計

參考文獻

相似文獻

引證文獻

資源附件

文章評論

摘要:

極軌氣象衛(wèi)星S-NPP、MetOp-A和FY-3B上搭載的微波濕度計觀測資料可以反映出臺風(fēng)周圍水汽和云雨結(jié)構(gòu)。本文使用權(quán)重函數(shù)峰值在800 hPa附近的微波濕度計通道觀測資料和ERA5再分析資料全天空模擬亮溫,以颶風(fēng)Sandy和Isaac為例,對用方位譜臺風(fēng)中心位置定位方法得到的觀測和模擬中心位置進行了比較。利用下午星S-NPP搭載的先進技術(shù)微波探測儀(Advanced Technology Microwave Sounder, ATMS)和上午星MetOp-A搭載的微波濕度計(Microwave Humidity Sounder, MHS)觀測亮溫得到的颶風(fēng)Sandy(Isaac)中心位置與最佳路徑平均相差35.8 km(32.9 km),但用ERA5全天空模擬亮溫得到的颶風(fēng)Sandy(Isaac)中心位置與最佳路徑平均相差73.3 km(82.1 km)。若按照熱帶風(fēng)暴和臺風(fēng)等級來劃分,ATMS和MHS觀測和模擬亮溫得到的臺風(fēng)中心位置與最佳路徑的平均距離對熱帶風(fēng)暴分別是36.5 km和105.9 km,對臺風(fēng)分別是25.8 km和56.4 km。若用FY-3B搭載的微波濕度計(以MWHS表示)替換ATMS,所得結(jié)果類似。ERA5作為全球大氣再分析資料的典型代表,用方位譜臺風(fēng)中心位置定位方法得到的臺風(fēng)中心位置誤差較大的原因是ERA5再分析資料全天空模擬亮溫在臺風(fēng)中的分布結(jié)構(gòu)與觀測亮溫相差較大,而模擬亮溫與冰水路徑分布結(jié)構(gòu)極為相似。研究對臺風(fēng)數(shù)值預(yù)報中的全天空模擬亮溫資料同化具有一定的參考意義。

Abstract:

Observations of brightness temperature from microwave humidity sounders carried on polar-orbiting environment satellites S-NPP, MetOp-A and FY-3 B can reflect structural distributions of water vapor, cloud and rainband around hurricanes. In this paper, the brightness temperature observations were used at microwave humidity sounding channel with its weight function maximum located at near 800 hPa and the all-sky ERA5 reanalysis simulations. Taking hurricanes Sandy and Isaac as examples, the satellite observed and ERA5 simulated center positions were obtained by the azimuth spectrum hurricane center positioning method were compared. The average difference between the center position of hurricane Sandy(Isaac) and the best track is 35.8 km(32.9 km) based on brightness temperature observations from the ATMS carried by the afternoon satellite S-NPP and the MHS carried by the morning satellite MetOp-A, but as large as 73.3 km(82.1 km) based on the ERA5 all-sky simulations. For tropical storm, if grouped into tropical storm and hurricane intensity categories, the average distance from the best track determined by satellite observations and ERA5 simulations is 36.5 km and 105.9 km, respectively for hurricanes, they are 25.8 km and 56.4 km, respectively. If ATMS was replaced by FY-3 B MWHS-2, similar results were obtained. ERA5 is a representative global atmospheric reanalysis dataset. The reason for a relatively large error of the hurricane center position obtained by the azimuth spectrum hurricane center positioning method is that the structural distributions of the all-sky ERA5 brightness temperature simulations are quite different from the brightness temperature observations within hurricanes. In fact, the spatial distributions of simulated brightness temperatures are very similar to those of the ice water path. This research should be helpful to all-sky brightness temperature data assimilation for hurricane numerical prediction.

參考文獻

相似文獻

引證文獻

引用本文

畢明明,鄒曉蕾.利用衛(wèi)星微波觀測亮溫與云輻射模擬亮溫的臺風(fēng)定位分析.氣象科學(xué),2022,42(4):457-466 BI Ming-ming, ZOU Xiao-lei. Analysis of hurricane centers determined by microwave observations and cloudy simulations of brightness temperature. Journal of the Meteorological Sciences,2022,42(4):457-466

復(fù)制

文章指標(biāo)

點擊次數(shù):
下載次數(shù):
HTML閱讀次數(shù):
引用次數(shù):

歷史

收稿日期:2022-06-14
最后修改日期:2022-06-27
錄用日期:
在線發(fā)布日期: 2022-10-20
出版日期:

文章二維碼

您是第位訪問者
氣象科學(xué) ® 2026 版權(quán)所有
技術(shù)支持：北京勤云科技發(fā)展有限公司

抽查舔水白紧大视频,冲喜娘子超甜哒激情五月,亚洲黄色图片偷拍网站,亚洲三级黄片免费播放,91在线观看喷潮红桃,日韩精品在线观看一区二区,久久久久久久久久久久黄色片子,日产精品99久久久久久久久,欧洲亚洲另类图片小说

引用本文

分享

相關(guān)視頻

文章指標(biāo)

歷史

文章二維碼

抽查舔水白紧大视频,冲喜娘子超甜哒 激情五月,亚洲黄色图片偷拍网站,亚洲三级黄片免费播放,91在线观看喷潮红桃,日韩精品在线观看一区二区,久久久久久久久久久久黄色片子,日产精品99久久久久久久久,欧洲亚洲另类图片小说

引用本文

分享

相關(guān)視頻

文章指標(biāo)

歷史

文章二維碼

抽查舔水白紧大视频,冲喜娘子超甜哒激情五月,亚洲黄色图片偷拍网站,亚洲三级黄片免费播放,91在线观看喷潮红桃,日韩精品在线观看一区二区,久久久久久久久久久久黄色片子,日产精品99久久久久久久久,欧洲亚洲另类图片小说