Abstract. To improve our knowledge of urban meteorology, including those processes applicable to high-resolution meteorological models in the Seoul Metropolitan Area (SMA), Weather Information Service Engine (WISE) Urban Meteorological Observation System (UMS-Seoul) has been designed and installed. The UMS-Seoul incorporates 14 surface energy balance (EB) systems, 7 surface-based three-dimensional (3-D) observation systems applied (AP) existing network. EB system consists a radiation system,...

The Korean peninsula has complex and diverse weather phenomena, the Korea Meteorological Administration been working on various numerical models to produce better forecasting data. Unified Model Local Data Assimilation Prediction System is a limited-area model with horizontal resolution of 1.5 km for estimating local-scale forecasts peninsula. However, in order numerically predict detailed temperature characteristics urban space, which surface change rapidly small spatial area, city...

Abstract Global climate change is a in the planetary energy ( E ) balance. It usually expressed as near‐surface air temperature T ), but changes content due to represent only part of balance, which also includes specific humidity SH ). We analyzed MERRA‐2 and ERA5 reanalysis data 15 CMIP6 Atmospheric Model Intercomparison Project (AMIP) models from 1980 2014. Some 44%, 39%, 50% pixels showed significant increases , respectively. The average increase was 16.9 (13.6) J kg −1 year AMIP...

Abstract The first three principal modes of wintertime surface temperature variability in Seoul, South Korea (37.33°N, 126.59°E), are extracted from the 1979–2008 observed records via cyclostationary EOF (CSEOF) analysis. mode represents seasonal cycle, principle physical mechanism which is associated with continent–ocean sea level pressure contrast. second mainly describes overall warming or cooling. third depicts subseasonal fluctuations temperature. Sea anomalies to west (eastern China)...

Three distinct physical mechanisms in the seasonal cycle of 120 day (19 May to 15 September) summer precipitation Korea (126°E–130°E, 33°N–38°N) were identified using 1979–2008 observed records at 61 Meteorological Administration stations. Detailed space‐time structures variability derived daily National Center for Environmental Prediction/National Atmospheric Research reanalysis data over Asia (80°E–180°E, 0°–60°N). The summertime exhibits three principal temporal scales (seasonal,...

Diurnal variations of Korean summertime (June-August) precipitation in 2009 were investigated using hourly National Institute Meteorological Research/Korea Administration (NIMR/KMA) Forecast Research Laboratory (FRL) data that had high spatial (5 km by 5 grid distance) and temporal (1 h) resolutions. Using the techniques multiresolution analysis Incomplete Gamma Function, NIMR/KMA FRL reanalysis are produced from observations about 680 Automatic Weather Systems reflectivity 10 radars over...

Summertime precipitation variability in Korea has changed significantly recent years. To understand how the physical mechanisms of summertime vary with climate change, we analyzed observed records for 1996–2008 comparison those 1979–1995 at 61 Meteorological Administration stations distributed over South Korea. We investigated detailed changes by extracting space‐time structures from daily NCEP/NCAR reanalysis data East Asia via cyclostationary EOF (CSEOF) analysis. Due to change low‐level...

The characteristics of heat wave events in Seoul are analyzed using weather station data from Korea Meteorological Administration (KMA) and European Centre for Medium‐Range Weather Forecast (ECMWF) ERA‐Interim reanalysis 1979 to 2016. Heat waves defined as the upper 10th percentile daily maximum temperatures. associated synoptic patterns then classified into six clusters through Self‐Organizing Map (SOM) analysis sea‐level pressure anomalies East Asia. Cluster 1 shows an anti‐cyclonic...

The effects of vertical resolutions and planetary boundary layer (PBL) physics schemes in a numerical simulation with very high resolution over the metropolitan area were investigated. experiments using Weather Research Forecast model conducted from 0000 UTC 25 October to 26 2013. We verified results against six hourly observation data radiosonde at Seolleung, which was located southern part Seoul, forty three auto weather systems Seoul. In low level atmosphere 44, 50, 60 layers, are set be...

In this study, we investigated the variabilities of wind speed 850 hPa and precipitable water over East Asia region using NCEP Final Analysis data from December 2001 to November 2011. A large variance was observed in northern eastern China during winter period. During summer, regions Sea, South Sea Japan show variances caused by an extended North Pacific High typhoon activities. The are shown be correlated with inter-annual variability inland windward side Korean Peninsula. Based on...

A characteristic of snowfall and minimum temperature variability in South Korea with respect to the Arctic Oscillation (AO) was investigated. The climatic regions based on daily new fresh data 59 Meteorological Administration (KMA) stations corresponding sign AO index during December February 1979~2011 were classified. Especially, differences between snowfalls eastern that western seen by each mean 1000hPa geopotential height fields, which is one physical structure, for selected cases over...

<p>Interannual variability in large circulations associated with climate connections, such as monsoon and El Niño, have a significant impact on winter PM<sub>2.5</sub> concentrations East Asia. In this study, we use the global 3D chemical transport model (GEOS-Chem) over last 35 years to investigate relationship between major First, is evaluated by comparing simulated observed aerosol ground satellite-based concentrations. The results...