A possibly new teleconnection has been discovered off the east coast of Australia in the region around Tasman sea and Southern Ocean. Found in pressure anomalies using a novel graph based approach called shared reciprocal nearest neighbors, this dipole appears in reanalysis datasets such as NCEP, JRA, ERA and MERRA. The HadSLP2 observation data shows the new dipole, despite of limited observati...

The paper analyzes the influence of atmospheric circulation on cloudiness and cloud types during July August 2016 in Petuniabukta Svalbard-Lufthavn. For meteorological parameters, basic statistical measures were calculated average diurnal patterns analyzed. Taking data from reanalysis (NCEP/NCAR-The National Centers for Atmospheric Prediction/The Center Research) regarding mean sea-level pressu...

Within this study we present a robust method for generating precipitation time series for the Anas catchment in North Western India. The method employs a multivariate stochastic simulation model that is driven by a time series of objectively classified circulation patterns (CPs). In a companion study (Zehe et al., 2006) it was already shown that CPs classified from the 500 or 700 Hpa levels are...

The meteorological conditions during the period of spring transition over the Middle East and the Persian Gulf and adjacent land area is investigated. Monthly and seasonal variations of large-scale atmospheric patterns and wind aloft features at different levels were drawn from data collected from the National Centers for Environmental Prediction and National Center for Atmospheric Researches. ...

Bayesian model averaging (BMA) and ensemble output statistics (EMOS) were used to improve the prediction skill of 500 hPa geopotential height field over northern hemisphere with lead times 1–7 days based on forecasts from European Centre for Medium-Range Weather Forecasts (ECMWF), National Centers Environmental Prediction (NCEP), UK Met Office (UKMO) systems. The performance BMA EMOS compared e...

Available rawinsonde, automatic weather station (AWS), ship, and synthesized long-term observations are used to evaluate the Antarctic numerical analyses of the European Centre for Medium-Range Weather Forecasts (ECMWF) and the U.S. National Centers for Environmental Prediction (NCEP) from 1985 to 1994. Twice-daily variations in the ECMWF surface pressure analyses compare closely with AWS units...

introduction subtropical high pressure is one of the main elements of the general circulation of the atmosphere. annual motion of the circulation plays an important role in movement path of pressure systems and westerlies. hence, large parts of the planet are affected directly and indirectly by this system. sometimes the high pressure called the subtropical high pressure belt. it’s shown as sev...

A new advanced microwave humidity sounder FY-3D MWHS2 radiance has been assimilated under the clear-sky conditions by implementing its data assimilation interface. The case of tropical storm Ampil in 2018 is selected to address effectiveness new-built module initialization and forecast typhoons. Apart from experiment assimilating both Global Telecommunications System (GTS) data, an with only GT...

Rainfall behavior is a fundamental issue in areas with scarce and irregular amounts, such as the Spanish Mediterranean region. We identified 12 spatial patterns that characterized 899 torrential precipitation events (≥150 mm 24 h) occurred 3,537 rainy series period 1950–2020. Three of these components––eastern ESE––showed positive significant trends their accumulated volumes. then mean synoptic...

Abstract A spectral analysis of Great Plains 850-hPa meridional winds (V850) from ECMWF’s coupled climate reanalysis 1901–2010 (CERA-20C) reveals that their warm season (April–September) interannual variability peaks in May with 2–6-yr periodicity, suggestive an underlying teleconnection influence on low-level jets (LLJs). Using objective, dynamical jet classification framework based 500-hPa wa...