干旱区研究2017，Vol.34Issue(2)：300-308,9.DOI:10.13866/j.azr.2017.02.08
多源水汽再分析资料在青藏高原的适用性评估
Applicability of Reanalysis Data of Multi-Source Water Vapor over the Tibetan Plateau
摘要
Abstract
It can provide the reference for studying water vapor distribution and transport to evaluate the applicability of reanalysis data of multi-source water over the Tibetan Plateau.In this study,the radiosonde data were taken as the standard,the applicability of JRA-25 (J25),JRA-55 (J55) and ERA-interim (ERA) over the Tibetan Plateau was compared.The results showed that three kinds of reanalysis data could be used to reveal the temporal and spatial variation characteristics of specific humidity (SP) over the plateau,but there were the seasonal and regional obvious differences between the observed and reanalysis data.Horizontally,the average root of mean square error (RMSE) and the average relative deviation (PIC) of J25 SP were lower compared with the observed data,the summer and annual average SP RMSE and PIC of J55 and ERA were significant,but the winter ones were lower.Vertically,compared with the vertical profiles of observed data,the warm season,cold season and annual average SP profiles of J25 were more coincident,the cold season average SP profiles of J55 and ERA were better,the warm season ones were significant,and the deviations in the main body and the southeast part of the plateau were particularly notable.The values of SP RMSE between the reanalysis and observed data were high in low-layer but low in high-layer,and the J25 RMSE was the lowest.The values of J25 SP were slightly higher than the observed ones,J55 and ERA SP were lower than the observed data,and the deviations were high.In summary,further examinations are needed to reveal the causes resulting in the high deviations between J55,ERA and observations as well as their applicability in other areas in China.关键词
多源水汽/再分析资料/比湿/适用性评估/青藏高原Key words
multi-source water vapor/reanalysis data/specific humidity/applicability/Tibetan Plateau引用本文复制引用
赵洪宇,张雪芹,解承莹..多源水汽再分析资料在青藏高原的适用性评估[J].干旱区研究,2017,34(2):300-308,9.基金项目
国家自然科学基金项目(41471064,41171062) （41471064,41171062）
