The NOAA IR serves as an archival repository of NOAA-published products including scientific findings, journal articles, guidelines, recommendations, or other information authored or co-authored by NOAA or funded partners.
As a repository, the NOAA IR retains documents in their original published format to ensure public access to scientific information.
[PDF-1.24 MB]
Details:
-
Journal Title:Theoretical and Applied Climatology
-
Personal Author:
-
Corporate Authors:Nanjing University of Information Science and Technology ; Collaborative Innovation Centre on Forecast and Evaluation of Meteorological Disasters ; Key Laboratory of Meteorological Disaster, Ministry of Education ; Special Test Field of National Integrated Meteorological Observation ; IM System Group, Inc. ; ... More +
-
NOAA Program & Office:
-
Description:Using a 30-year data (1983–2012) from 428 stations, we study summer precipitation differences between urban and rural areas in 5 Chinese climate regions: the Pearl River Delta (PRD), the Middle and Upper reaches of the Yangtze River (MUYR), the Yangtze River Delta (YRD), the North China Plain (NCP), and Northeast China (NEC). By analyzing heavy rain (HR) (24-h precipitation ≥ 100 mm) and light rain (LR) (0.1 mm ≤ 24 h precipitation ≤ 25 mm), we find that urbanization has had inconsistent effects on precipitation. Higher HR occurs over urban areas of the PRD and YRD than rural areas, and lower HR occurs over urban areas of the MUYR, NCP and NEC than rural areas. The urban LR is less than the rural LR in all climate regions. The correlation between precipitation and the convective available potential energy (CAPE) or humidity explains the regional differences in urbanization effects on HR. HR is greatly affected by the CAPE in the PRD and YRD, where the CAPE is high (> 600 J/kg at 14:00 LT), water vapor is abundant (> 45 kg/m2 at 14:00 LT), and the urban heat island increases the urban HR. However, HR is greatly affected by humidity in the MUYR, NCP, and NEC, where the CAPE and water vapor are less (≤ 500 J/kg and ≤ 40 kg/m2 at 14:00 LT) and the urban HR is mainly suppressed by the urban dry island. Our results indicate that urbanization promotes HR in wet climates but suppresses HR in dry climates during summer in central and eastern China.
-
Keywords:
-
Source:Theoretical and Applied Climatology, 43, 73-85
-
DOI:
-
Format:
-
Publisher:
-
Document Type:
-
Place as Subject:
-
Rights Information:Accepted Manuscript
-
Compliance:Submitted
-
Main Document Checksum:
-
Download URL:
-
File Type:
