pressure anomaly 中文意思是什麼
pressure anomaly
解釋
氣壓距平-
In addition, the ao index released by american climate prediction center ( cpc aoi ) fails to reflect the summer ao mode. in this paper, the time series of the leading principal component of the summertime ( june - september ) surface level pressure anomaly field over the domain poleward of 20 n is defined as the summertime ao index
此外，美國氣候預測中心發布的全年北極濤動月指數不能表現夏季北極濤動型，本文將北半球熱帶外地區（ 20 n以北）夏季（ 6 - 9月）海平面氣壓場eof主模態的時間序列定義為夏季北極濤動指數。 -
Experts had not bothered to study closer - in data in detail because they believed that radiation pressure of the sun and the many flight maneuvers would make it difficult to measure the anomaly
專家們不曾詳盡的研究較近距離內的數據，因為他們認為太陽的輻射壓與許多太空飛行任務會使異常現象不好量測。 -
By using ncep / ncar reanalysis data of height and wind, the inter - monthly lpac map, the climate lapc map, inter - annual anomaly map and mean variance map of monthly wind field of 850 and 500hpa and monthly height field of 850, 500, 150, 30hpa are calculated in a globe - belt area, which situates between 30 s and 75 n, from december 1957 to december 1997, according them we analysis the rule of the season transfer and anomaly of nh mean circulation. the results show that the climate map of lapc can describe the seasonal transfer process of large scale circulation better. the advance process of summer circulation establish is form south to north at the middle and lower level of the troposphere, that is reflected primly in the inter - monthly wind and pressure map of lapc ; at lower lever of stratosphere, the establish process is simulate to that of troposphere, and reflect of process of that the south asia high toward plateau ; at middle stratosphere the summer circulation establish begins at middle and high latitude initially, and then transmits to low latitude gradually, while the seasonal variability in mid - stratosphere is stronger than it in troposphere and low - stratosphere
利用ncep ncar再分析高度場和風場資料，計算了30 s 75 n球帶區域1957年12月至1997年12月逐月850 、 500hpa風場及850 、 500 、 150 、 30hpa高度場月際局地型相似系數圖、多年平均圖（即氣候lpac圖） 、年際異常圖及均方差圖，在此基礎上，分析了北半球平均環流季節轉換及其異常的規律。分析表明，氣候局地型相似系數圖較好地給出了大尺度環流季節轉換發生的過程：在對流層中、下部，風、壓場月際局地型相似系數圖清楚地反映了夏季型環流建立由南向北的推進過程；低平流層夏季型環流的建立與對流層接近，其中，南亞高壓上高原過程有明顯反映：中平流層，夏季型環流的建立明顯表現為從中、高緯度開始，逐步向低緯傳播的特徵，且變化較對流層和低平流層明顯。 -
Based on summer precipitation in north china and the northern hemisphere sea level pressure ( slp ) and the pacific sea surface temperature anomaly ( ssta ) from 1900 to 2001 and ncep data from 1950 to 1999, this paper studies inter - decadal variations of summer precipitation in north china and linkage of it and general circulation of atmosphere ( gca ) and enso cycle using eof and wavelet transform and composite analysis and correlation analysis and so on
本文採用1900 2001年華北夏季降水量、北半球海平面氣壓（ slp ） 、太平洋海表溫度距平（ ssta ） 、 1950 1999年ncep資料等，利用eof 、小波變換、合成分析、相關分析等方法，研究了華北夏季降水的年代際變化及其與東亞大氣環流、 enso循環的聯系。
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