<trans-title>Spatial downscaling of remotely sensed precipitation in Taihang Mountains</trans-title>

Shi HU; Jian HAN; Chesheng ZHAN; Liangmeizi LIU

doi:10.11821/dlyj020190545

Geographical Research, Volume. 39, Issue 7, 1680(2020)

Spatial downscaling of remotely sensed precipitation in Taihang Mountains

Shi HU¹, Jian HAN², Chesheng ZHAN^1、*, and Liangmeizi LIU^1,3

¹Key Laboratory of Water Cycle and Related Land Surface Processes, Institute of Geographic Sciences and Natural Resources Research, CAS, Beijing 100101, China

²Powerchina Northwest Engineering Corporation Limited, Xi'an 710065, China

³University of Chinese Academy of Sciences, Beijing 100049, China

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Figures & Tables(7)

Fig. 1. Location, DEM, NDVI and meteorological stations of Taihang Mountains

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Fig. 2. Spatial pattern of monthly original GPM data and downscaled GPM data in July 2015

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Fig. 3. Comparisons of observed precipitation with original GPM precipitation and downscaled GPM data at monthly scale

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Fig. 4. Comparisons of observed data with downscaling precipitation using different methods

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Fig. 5. Spatial pattern of monthly precipitation in Taihang Mountains in 2015

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Fig. 6. Effect of residual correction on downscaled precipitation

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Table 1. Coefficients of determination (R²), Root Mean Square Error (RMSE) and Mean Absolute Error (MAE) between downscaled precipitation and observed precipitation in Taihang Mountains

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Table 1. Coefficients of determination (R²), Root Mean Square Error (RMSE) and Mean Absolute Error (MAE) between downscaled precipitation and observed precipitation in Taihang Mountains

	时滞阶数	1月	2月	3月	4月	5月	6月	7月	8月	9月	10月	11月	12月	平均
R²	0	0.42	0.72	0.92	0.92	0.74	0.62	0.76	0.81	0.82	0.89	0.37	0.33	0.628
	1	0.45	0.69	0.92	0.93	0.75	0.60	0.71	0.76	0.81	0.89	0.37	0.33	0.618
	2	0.57	0.70	0.90	0.93	0.78	0.61	0.70	0.74	0.80	0.88	0.36	0.37	0.627
	3	0.46	0.68	0.91	0.93	0.74	0.60	0.76	0.75	0.79	0.87	0.34	0.46	0.627
RMSE(mm/月)	0	3.36	3.52	7.24	6.59	18.44	26.93	32.64	35.05	15.71	7.79	11.52	1.73	14.211
	1	3.27	3.71	7.20	6.31	18.52	27.80	36.20	35.38	16.21	8.11	11.38	1.68	14.647
	2	2.91	3.69	7.54	6.52	17.67	27.56	36.31	36.70	16.44	8.40	11.82	1.71	14.771
	3	3.16	3.80	7.29	6.49	17.97	27.67	32.61	35.71	16.70	8.65	12.14	1.63	14.487
MAE(mm/月)	0	2.25	2.51	5.86	5.00	13.32	20.61	25.17	28.45	13.71	6.24	10.09	1.23	11.204
	1	2.25	2.91	5.82	4.84	13.63	21.19	26.22	28.96	13.93	6.27	9.99	1.27	11.439
	2	2.05	2.93	6.20	5.02	13.10	21.26	25.52	29.94	14.16	6.29	9.75	1.29	11.458
	3	2.19	2.94	6.07	5.04	13.35	21.63	23.68	29.71	14.68	6.56	9.81	1.23	11.407
最优时滞阶数		2	0	1	1	2	0	0	0	0	0	1	3	—

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Shi HU, Jian HAN, Chesheng ZHAN, Liangmeizi LIU. Spatial downscaling of remotely sensed precipitation in Taihang Mountains[J]. Geographical Research, 2020, 39(7): 1680

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Paper Information

Received: Jul. 2, 2019

Accepted: --

Published Online: Apr. 23, 2021

The Author Email: ZHAN Chesheng (zhancs@igsnrr.ac.cn)

DOI:10.11821/dlyj020190545

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Research Articles

Table 1. Coefficients of determination (R2), Root Mean Square Error (RMSE) and Mean Absolute Error (MAE) between downscaled precipitation and observed precipitation in Taihang Mountains

Table 1. Coefficients of determination (R2), Root Mean Square Error (RMSE) and Mean Absolute Error (MAE) between downscaled precipitation and observed precipitation in Taihang Mountains

Table 1. Coefficients of determination (R²), Root Mean Square Error (RMSE) and Mean Absolute Error (MAE) between downscaled precipitation and observed precipitation in Taihang Mountains

Table 1. Coefficients of determination (R²), Root Mean Square Error (RMSE) and Mean Absolute Error (MAE) between downscaled precipitation and observed precipitation in Taihang Mountains