We found a match
Your institution may have rights to this item. Sign in to continue.
- Title
Climatological characteristics of raindrop size distributions within a topographically complex area.
- Authors
Suh, S.-H.; You, C.-H.; Lee, D.-I.
- Abstract
Raindrop size distribution (DSD) characteristics within the complex area of Busan, Korea (35.12° N, 129.10° E) were studied using a Precipitation Occurrence Sensor System (POSS) disdrometer over a four-year period from 24 February 2001 to 24 December 2004. Average DSD parameters in Busan, a mid-latitude site, were compared with corresponding parameters recorded in the high-latitude site of Järvenpää, Finland. Mean values of median drop diameter (D0) and the shape parameter (μ) in Busan are smaller than those in Järvenpää, whereas the mean normalized intercept parameter (Nw) and rainfall rate (R) are higher in Busan. To analyze the climatological DSD characteristics in more detail, the entire period of recorded rainfall was divided into 10 categories with different temporal and spatial scales. When only convective rainfall was considered, mean Dm and Nw values for all these categories converged around a maritime cluster, except for rainfall associated with typhoons. The convective rainfall of a typhoon showed much smaller Dm and larger Nw compared with the other rainfall categories. In terms of diurnal DSD variability, we observe maritime (continental) precipitation during the daytime (DT) (nighttime, NT), which likely results from sea (land) breeze identified through wind direction analysis. These features also appeared in the seasonal diurnal distribution. The DT and NT Probability Density Function (PDF) during the summer was similar to the PDF of the entire study period. However, the DT and NT PDF during the winter season displayed an inverse distribution due to seasonal differences in wind direction.
- Subjects
BUSAN (Korea); RAINDROP size; METEOROLOGICAL precipitation; RAINFALL; PROBABILITY density function
- Publication
Hydrology & Earth System Sciences Discussions, 2015, Vol 12, Issue 4, p4005
- ISSN
1812-2108
- Publication type
Article
- DOI
10.5194/hessd-12-4005-2015