多源降水产品在高寒内陆河流域的适用性和误差组分
徐柳昕(2001-),女,硕士研究生,主要从事水文与水资源研究. E-mail: 231601010127@hhu.edu.cn |
收稿日期: 2024-09-24
修回日期: 2024-12-01
网络出版日期: 2025-08-13
基金资助
中央高校基本科研业务费(B240201075)
国家自然科学基金项目(42277074)
水利部重大科技项目“智慧化流域产汇流及洪水预报模型研究”(SKR-2022074)
Evaluation and Error decomposition of multisource precipitation data in an alpine and endorheic river watershed
Received date: 2024-09-24
Revised date: 2024-12-01
Online published: 2025-08-13
降水资料的质量是高寒山区径流模拟精度的重要影响因素,对水资源管理及生态安全等至关重要。本文结合多种统计指标和误差分解模型,对比分析4套降水产品(卫星降水数据GPM、亚洲地区高质量高时空分辨率降水数据集AIMERG、再分析数据CMFD和ERA5)在叶尔羌河上游流域的降水时空分布特征,评估不同产品的精度,解析不同产品的误差特征。结果表明:(1) CMFD和AIMERG的年降水呈现了南高北低的空间特征,与基于中国地面台站的插值格点数据集CN05.1的特征一致,但ERA5和GPM呈现了相反的空间分布。高分辨率的AIMERG和CMFD可以捕捉到西南部冰川区降水高的特征。(2) 不同降水产品的年际变化特征差异显著且多数产品夏秋季节降水占比超过60%。对比发现,仅有AIMERG产品可以较好地呈现研究区降水年内变化的峰型和峰现时间,对站点月降水量的捕捉能力最强,呈现较高的相关系数(>0.6)和较小的均方根误差(8.45~11.57 mm),而ERA5产品最差。(3) 日尺度的不同降水产品精度均呈现出多雨期(5—10月)高于少雨期(11月—次年4月)的特征,AIMERG在不同时期均呈现较高的日降水关键成功指数。(4) 不同降水产品夏季的主导误差均为命中误差,而冬季的主导误差随降水产品而变化。研究成果可为高寒区径流模拟和降水产品的算法改进提供一定的参考价值。
徐柳昕 , 王文雨 , 王晓燕 , 王雪莹 , 谷黄河 . 多源降水产品在高寒内陆河流域的适用性和误差组分[J]. 干旱区研究, 2025 , 42(1) : 51 -62 . DOI: 10.13866/j.azr.2025.01.05
The quality of precipitation data are critical factor influencing the accuracy of runoff simulation in high-cold mountainous districts as it plays an important role in the ecological environmental protection and water resource management. The spatiotemporal characteristics of precipitation are analyzed in the headwater catchment of the Yarkant River Basin on the basis of GPM (Global Precipitation Measurement), AIMERG (the Asian precipitation dataset by calibrating the GPM-era IMERG), CMFD (China Meteorological Forcing Dataset) and ERA5 (The fifth-generation atmospheric reanalysis of the European Center for Medium-Range Weather Forecasts). Subsequently, the accuracy of the multisource precipitation data are evaluated against the observed precipitation. The error characteristics of various precipitation products was analyzed by means of the error decomposition model. The main findings were as follows: (1) The spatial pattern for CMFD and AIMERG was characterized by the increase from the north to south, which was consistent with the spatial pattern for the grid observation data set CN05.1 (the National Climate Center of China Meteorological Administration precipitation dataset). An opposite pattern was detected for ERA5 and GPM. Additionally, AIMERG and CMFD displayed higher precipitation in the glacier area. (2)The inter-annual variation characteristics of various precipitation products were significantly different, and the ratio of summer and autumn precipitation to annual precipitation for most precipitation products was more than 60%. Among all the precipitation products, only AIMERG reproduced the seasonal patterns, such as the time when the maximum monthly precipitation occurred and the peak shape for the monthly precipitation at all stations. AIMERG had the greatest ability to reproduce gauged monthly precipitation, with a higher correlation coefficient (>0.6) and lower root mean square error (8.45-11.57 mm), whereas ERA5 show the poorest ability. (3) All precipitation products showed a higher performance in reproducing daily precipitation during the wet period (from May to October) than during the dry period (from November to April). AIMERG had a greater critical success index in both wet period and dry period than for other precipitation products. (4) The dominant error of the various precipitation products in summer was the hit error, whereas the dominant error in winter varied with the precipitation product. These findings provide some reference for the runoff simulation and algorithm improvement of precipitation products in the high-cold region, where meteorological data are limited.
表1 不同类型降水事件发生情况联列表Tab. 1 The definition for different types of precipitation events |
命中事件(H) | 漏报事件(M) | |
误报事件(F) | 未降雨事件(N) |
表2 4种降水产品和观测月降水的误差指标Tab. 2 Error indexes between precipitation products and observed monthly precipitation |
站点 | 数据集 | CC | BIAS/% | RMSE/mm |
---|---|---|---|---|
卡群站 | ERA5 | 0.60 | 565.62 | 74.59 |
GPM | 0.55 | -51.89 | 12.96 | |
CMFD | 0.57 | 68.85 | 17.86 | |
AIMERG | 0.75 | 22.54 | 11.57 | |
库鲁克栏杆站 | ERA5 | 0.83 | 593.57 | 88.39 |
GPM | 0.65 | -16.84 | 9.90 | |
CMFD | 0.51 | 36.09 | 14.06 | |
AIMERG | 0.68 | 10.37 | 11.10 | |
塔什库尔干站 | ERA5 | 0.64 | 355.85 | 36.40 |
GPM | 0.45 | 65.75 | 14.98 | |
CMFD | 0.96 | 22.67 | 3.88 | |
AIMERG | 0.85 | 15.09 | 8.45 |
表3 不同降水产品在高寒内陆河流域适用性评估Tab. 3 Typical cases of applicability evaluation of different precipitation products in the alpine and endorheic river watersheds |
序号 | 涉及的降水产品 | 研究区 | 文献来源 |
---|---|---|---|
1 | TRMM3B42、GPM-IMERG、MSWEP V2.2 | 天山地区 | [26] |
2 | GPM、IMERG-V06、TRMM | 天山地区 | [27] |
3 | GPM、TRMM、CMORPH | 天山地区 | [28] |
4 | GPM、TRMM、CMORPH | 天山山区 | [8] |
5 | GPM、TRMM | 黑河流域 | [29] |
6 | TRMM 3B42、CMORPH-RAW、CMORPH-CRT、APHRO、CN05.1、ITPCAS | 黑河流域 | [30] |
7 | IMERG、APHRODITE、CMPA | 亚洲(含天山子区域) | [10] |
8 | GPM、ERA5、CHIRPS | 伊犁河上游 | [31] |
9 | TRMM、GPM、PERSIANN、CHIRPS、ERA5 | 开都河上游 | [32] |
[1] |
|
[2] |
郭玉琳, 赵勇, 周雅蔓, 等. 新疆天山山区夏季降水日变化特征及其与海拔高度关系[J]. 干旱区地理, 2022, 45(1): 57-65.
[
|
[3] |
申豪勇, 李佳, 王志恒, 等. 黄河支流汾河流域水资源开发利用现状及生态环境问题[J]. 中国地质, 2022, 49(4): 1127-1138.
[
|
[4] |
罗映雪, 徐长春, 楚智, 等. CN05. 1气象数据在流域水文模拟中的应用——以新疆开都河流域为例[J]. 气候变化研究进展, 2020, 16(3): 287-295.
[
|
[5] |
麦杞莹, 谭学志, 吴欣欣, 等. 多个高时空分辨率降水产品在珠江三角洲地区的多尺度精度评估[J]. 中山大学学报(自然科学版)(中英文), 2024, 63(3): 21-31.
[
|
[6] |
|
[7] |
汪梓彤, 李石宝, 张志友, 等. GPM近实时降水产品在青藏高原的多尺度精度评价[J]. 人民黄河, 2021, 43(4): 43-49.
[
|
[8] |
金晓龙, 邵华, 张弛, 等. GPM卫星降水数据在天山山区的适用性分析[J]. 自然资源学报, 2016, 31(12): 2074-2085.
[
|
[9] |
|
[10] |
|
[11] |
陈家琳, 雍斌. GPM-GSMaP卫星降水在中国大陆的误差解析[J]. 亚热带资源与环境学报, 2020, 15(4): 76-85.
[
|
[12] |
张茹, 雍斌, 曾岁康, 等. GPM卫星降水产品在中国大陆的精度评估[J]. 人民长江, 2021, 52(5): 50-59.
[
|
[13] |
陈昱凝, 胡林金, 颜伟, 等. 叶尔羌河上游不同流域夏季气候和径流变化研究[J]. 冰川冻土, 2014, 36(3): 678-684.
[
|
[14] |
阚宝云, 苏凤阁, 童凯, 等. 四套降水资料在喀喇昆仑山叶尔羌河上游流域的适用性分析[J]. 冰川冻土, 2013, 35(3): 710-722.
[
|
[15] |
吴佳, 高学杰. 一套格点化的中国区域逐日观测资料及与其它资料的对比[J]. 地球物理学报, 2013, 56(4): 1102-1111.
[
|
[16] |
|
[17] |
胡一阳, 徐影, 李金建, 等. CMIP6不同分辨率全球气候模式对中国降水模拟能力评估[J]. 气候变化研究进展, 2021, 17(6): 730-743.
[
|
[18] |
|
[19] |
杜懿, 林泽群, 庄胜杰, 等. GPM卫星降水产品在长江流域的空间降尺度研究[J]. 遥感技术与应用, 2023, 38(3): 697-707.
[
|
[20] |
林书睿, 顾恒竹, 路明月, 等. 基于GWR模型的典型区域GPM数据降尺度研究——以浙江省为例[J]. 气象科学, 2022, 42(6): 793-803.
[
|
[21] |
刘婷婷, 朱秀芳, 郭锐, 等. ERA5再分析降水数据在中国的适用性分析[J]. 干旱区地理, 2022, 45(1): 66-79.
[
|
[22] |
刘鸿波, 董理, 严若婧, 等. ERA5再分析资料对中国大陆区域近地层风速气候特征及变化趋势再现能力的评估[J]. 气候与环境研究, 2021, 26(3): 299-311.
[
|
[23] |
夏怡洁. 基于CMFD数据的新疆天山降水同位素云下二次蒸发研究[D]. 兰州: 西北师范大学, 2023.
[
|
[24] |
崔豪, 王贺佳, 肖伟华, 等. 三峡库区CMFD降水数据适用性评估[J]. 人民长江, 2021, 52(8): 98-104.
[
|
[25] |
|
[26] |
|
[27] |
|
[28] |
|
[29] |
王思梦, 王大钊, 黄昌. GPM卫星降水数据在黑河流域的适用性评价[J]. 自然资源学报, 2018, 33(10): 1847-1860.
[
|
[30] |
|
[31] |
尹瑞琪, 李琼芳, 陈启慧, 等. 伊犁河上游流域三种日尺度降水产品性能评估[J]. 干旱区研究, 2024, 41(4): 540-549.
[
|
[32] |
陈世雪. 多源降水数据的开都河上游水文模拟效用评估[D]. 乌鲁木齐: 新疆师范大学, 2022.
[
|
[33] |
赵彤, 赵梦凡, 周秉荣, 等. 三种再分析气温降水资料在青藏高原的适用性评价[J]. 沙漠与绿洲气象, 2023, 17(3): 116-125.
[
|
[34] |
班春广, 左德鹏, 徐宗学, 等. 高寒区多源降水产品精度与水文模拟效果评估——以雅鲁藏布江流域和拉萨河流域为例[J]. 水土保持学报, 2023, 37(2): 159-168.
[
|
/
〈 |
|
〉 |