Quasi-Biennial Oscillations in Indonesian Aerological Data

这项为期两年的研究的目的是收集印度尼西亚气象和地球物理局（BMG）11个业务站最近十年（1990年代）的无线电探空仪数据，并研究赤道对流层和平流层下部准两年振荡（QBO）和其他年际变化的详细结构和机制。调查人员访问了BMG的中央和地区办事处，并调查了业务观测的状况（仪器精度、连续性、记录方法等）。在每个办公室。根据一项执行协议，数据收集和数字化工作的主要部分由技术评估和应用机构（BPPT）的工作人员完成。这些资料由印度尼西亚的BPPT、日本的京都大学和科比大学汇编和储存，并在第二个财政年度（1999年）用于多项气候研究。印度尼西亚周边国家和世界各地各区域的台站的雷达探测数据已部分获得，以供比较。印度尼西亚的降雨量和其他地面气象数据一直在不断收集。从这些数据库的分析中获得的早期结果包括各种气象参数的准两年振荡（QBO），甚至在对流层或中纬度地区。Hadley、步行者和赤道东风急流环流的季节变化也被清楚地显示出来。此外，还研究了赤道波和超级云团。

The objective of this two-year research is to collect rawinsonde data at 11 operational stations of the Indonesian Meteorological and Geophysical Agency (BMG) for the recent decade (1990s), and to study detailed structure and mechanism of the quasi-biennial oscillation (QBO) and other interannual variations in the equatorial troposphere and lower stratosphere.In the first fiscal year (1998), investigators visited the central and regional offices of BMG, and surveyed the status of operational observations (instrumental accuracy, continuity, recording method, etc.) at each offices. Under an implementing agreement, major parts of data collection and degitalization jobs have been made by staff members of the Agency for Assessment and Application of Technology (BPPT). The data have been compiled and stored at BPPT in Indonesia, and also at Kyoto University and Kobe University in Japan.In the second fiscal year (1999), the data has been used to several climatological studies. Rawinsonde data at stations in countries surrounding Indonesia and in various regions all over the world have been partly obtained for comparison. Rainfall and othet surface meteorological data in Indonesia have been continuously collected. Early results obtained from analysis of these database include quasi-biennial oscillations(QBO) in various meteorological parameters even in the troposphere or in the mid-latitudes. Seasonal variations of the Hadley, Walker and equatorial easterly jet circulations have been also clearly shown. Furthermore, equatorial waves and super cloud clusters have been studied.