Next Article in Journal
Influence of Weather on the Behaviour of Tourists in a Beach Destination
Previous Article in Journal
Integrated Correction Algorithm for X Band Dual-Polarization Radar Reflectivity Based on CINRAD/SA Radar
Previous Article in Special Issue
Development of a Building-Scale Meteorological Prediction System Including a Realistic Surface Heating
Open AccessArticle

Sensitivity Analysis of Surface Energy Budget to Albedo Parameters in Seoul Metropolitan Area Using the Unified Model

Division of Science Education/Institute of Fusion Science, Jeonbuk National University, Jeonju 54896, Korea
Applied Meteorology Research Division, National Institute of Meteorological Sciences, Seogwipo 63568, Korea
Author to whom correspondence should be addressed.
Atmosphere 2020, 11(1), 120;
Received: 29 November 2019 / Revised: 15 January 2020 / Accepted: 18 January 2020 / Published: 20 January 2020
(This article belongs to the Special Issue Urban Meteorology)
The large population growth has significantly altered the thermal characteristics of the atmosphere, including decreased albedo and increased heat capacity; thus, urban areas experience unique climatic phenomena. We conducted sensitivity experiments using Unified Model Local Data Assimilation and Prediction-Met-Office-Reading Urban Surface Exchange Scheme (LDAPS-MORUSES) to investigate the response of surface energy budget to albedo changes in the Seoul Metropolitan Area. We compared 1.5-m temperature at 56 automatic weather station (AWS) sites and showed underestimations of approximately 0.5–2 K, but the diurnal cycle was well simulated. We changed the wall and road albedo parameters by ±50% from the default values for sensitivity experiments. With increasing albedo, 1.5-m temperature decreased by approximately 0.06 °C and 0.01 °C in urban and suburban areas, respectively. These changes are responses to decreased net radiation and sensible heat during daytime, whereas sensible heat mainly contributes to the surface cooling during nighttime. Furthermore, the decrease in albedo leads to altered vertical structure of potential temperature and atmospheric circulations at altitudes of 300–1000 m. Results show that albedo modification can affect not only surface temperature but also the entire urban boundary layer. View Full-Text
Keywords: LDAPS; MORUSES; albedo sensitivity; surface energy budget LDAPS; MORUSES; albedo sensitivity; surface energy budget
Show Figures

Figure 1

MDPI and ACS Style

Wie, J.; Hong, S.-O.; Byon, J.-Y.; Ha, J.-C.; Moon, B.-K. Sensitivity Analysis of Surface Energy Budget to Albedo Parameters in Seoul Metropolitan Area Using the Unified Model. Atmosphere 2020, 11, 120.

Show more citation formats Show less citations formats
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Access Map by Country/Region

Back to TopTop