Australia Boreal Asia Boreal North America Central America Central Asia Equatorial Asia Europe Globe Middle East Northern Hemisphere Africa Northern Hemisphere South America Southeast Asia Southern Hemisphere Africa Southern Hemisphere South America Temperate North America

	Download Data	Period Mean (original grids) [%]	Model Period Mean (intersection) [%]	Model Period Mean (complement) [%]	Benchmark Period Mean (intersection) [%]	Benchmark Period Mean (complement) [%]		Bias [%]	RMSE [%]	Phase Shift [months]		Bias Score [1]	RMSE Score [1]	Seasonal Cycle Score [1]	Spatial Distribution Score [1]	Interannual Variability Score [1]	Overall Score [1]
Benchmark	[-]	60.1
CRUNCEPv7	[-]	50.3	50.2	0.00	50.2	75.3		2.32	8.89	0.494		0.61	0.53	0.91	0.94	0.75	0.71
GSWP3v1	[-]	48.9	48.9	0.00	50.2	75.3		1.23	7.04	0.478		0.75	0.53	0.92	0.99	0.85	0.76
WATCH	[-]	51.4	51.4	0.00	50.8	75.5		2.83	5.59	0.304		0.69	0.68	0.94	0.98	0.87	0.81

	Download Data	Period Mean (original grids) [%]	Model Period Mean (intersection) [%]	Model Period Mean (complement) [%]	Benchmark Period Mean (intersection) [%]	Benchmark Period Mean (complement) [%]		Bias [%]	RMSE [%]	Phase Shift [months]		Bias Score [1]	RMSE Score [1]	Seasonal Cycle Score [1]	Spatial Distribution Score [1]	Interannual Variability Score [1]	Overall Score [1]
Benchmark	[-]	75.6
CRUNCEPv7	[-]	77.3	77.3	0.00	74.8	83.1		3.00	13.0	2.14		0.39	0.29	0.67	0.61	0.50	0.46
GSWP3v1	[-]	85.4	85.4	0.00	74.8	83.1		10.7	17.5	2.29		0.25	0.16	0.65	0.93	0.34	0.41
WATCH	[-]	84.3	84.3	0.00	74.8	83.0		9.59	11.4	2.70		0.27	0.43	0.57	0.96	0.71	0.56

	Download Data	Period Mean (original grids) [%]	Model Period Mean (intersection) [%]	Model Period Mean (complement) [%]	Benchmark Period Mean (intersection) [%]	Benchmark Period Mean (complement) [%]		Bias [%]	RMSE [%]	Phase Shift [months]		Bias Score [1]	RMSE Score [1]	Seasonal Cycle Score [1]	Spatial Distribution Score [1]	Interannual Variability Score [1]	Overall Score [1]
Benchmark	[-]	78.1
CRUNCEPv7	[-]	81.1	81.1	0.00	75.8	83.7		6.58	13.0	2.36		0.34	0.26	0.63	0.67	0.60	0.46
GSWP3v1	[-]	86.4	86.4	0.00	75.8	83.7		11.3	16.6	2.25		0.19	0.17	0.66	1.0	0.46	0.44
WATCH	[-]	84.7	84.6	0.00	75.7	83.6		9.76	12.3	2.81		0.23	0.32	0.54	0.99	0.72	0.52

	Download Data	Period Mean (original grids) [%]	Model Period Mean (intersection) [%]	Model Period Mean (complement) [%]	Benchmark Period Mean (intersection) [%]	Benchmark Period Mean (complement) [%]		Bias [%]	RMSE [%]	Phase Shift [months]		Bias Score [1]	RMSE Score [1]	Seasonal Cycle Score [1]	Spatial Distribution Score [1]	Interannual Variability Score [1]	Overall Score [1]
Benchmark	[-]	74.2
CRUNCEPv7	[-]	62.8	62.8	0.00	68.2	78.0		-2.64	8.64	1.41		0.49	0.45	0.78	0.99	0.76	0.65
GSWP3v1	[-]	67.2	67.1	0.00	68.2	78.0		0.506	9.51	1.65		0.51	0.34	0.75	0.99	0.71	0.61
WATCH	[-]	68.5	68.4	0.00	69.0	78.2		0.936	6.48	0.988		0.57	0.53	0.85	0.99	0.78	0.71

	Download Data	Period Mean (original grids) [%]	Model Period Mean (intersection) [%]	Model Period Mean (complement) [%]	Benchmark Period Mean (intersection) [%]	Benchmark Period Mean (complement) [%]		Bias [%]	RMSE [%]	Phase Shift [months]		Bias Score [1]	RMSE Score [1]	Seasonal Cycle Score [1]	Spatial Distribution Score [1]	Interannual Variability Score [1]	Overall Score [1]
Benchmark	[-]	60.6
CRUNCEPv7	[-]	54.3	54.3	0.00	58.3	73.7		-2.83	13.8	1.39		0.52	0.49	0.79	0.92	0.76	0.66
GSWP3v1	[-]	61.8	61.8	0.00	58.3	73.7		4.18	16.4	1.97		0.53	0.32	0.68	0.97	0.56	0.56
WATCH	[-]	66.3	66.3	0.00	58.9	74.0		7.79	9.96	1.18		0.53	0.61	0.82	0.99	0.82	0.73

	Download Data	Period Mean (original grids) [%]	Model Period Mean (intersection) [%]	Model Period Mean (complement) [%]	Benchmark Period Mean (intersection) [%]	Benchmark Period Mean (complement) [%]		Bias [%]	RMSE [%]	Phase Shift [months]		Bias Score [1]	RMSE Score [1]	Seasonal Cycle Score [1]	Spatial Distribution Score [1]	Interannual Variability Score [1]	Overall Score [1]
Benchmark	[-]	81.9
CRUNCEPv7	[-]	83.1	83.1	0.00	84.5	80.4		-1.21	5.02	1.63		0.44	0.41	0.76	0.96	0.70	0.61
GSWP3v1	[-]	85.1	85.1	0.00	84.5	80.4		-0.499	5.14	1.42		0.60	0.24	0.80	1.0	0.61	0.58
WATCH	[-]	87.2	87.2	0.00	84.7	80.4		0.951	3.44	1.26		0.57	0.47	0.82	0.97	0.75	0.68

	Download Data	Period Mean (original grids) [%]	Model Period Mean (intersection) [%]	Model Period Mean (complement) [%]	Benchmark Period Mean (intersection) [%]	Benchmark Period Mean (complement) [%]		Bias [%]	RMSE [%]	Phase Shift [months]		Bias Score [1]	RMSE Score [1]	Seasonal Cycle Score [1]	Spatial Distribution Score [1]	Interannual Variability Score [1]	Overall Score [1]
Benchmark	[-]	77.3
CRUNCEPv7	[-]	76.2	76.4	0.00	76.1	79.2		0.905	5.93	1.24		0.63	0.51	0.84	0.85	0.80	0.69
GSWP3v1	[-]	76.4	76.7	0.00	76.1	79.2		0.492	9.42	0.896		0.61	0.30	0.88	0.80	0.57	0.58
WATCH	[-]	80.1	80.3	0.00	76.4	79.6		3.42	5.33	0.819		0.58	0.61	0.88	1.0	0.83	0.75

	Download Data	Period Mean (original grids) [%]	Model Period Mean (intersection) [%]	Model Period Mean (complement) [%]	Benchmark Period Mean (intersection) [%]	Benchmark Period Mean (complement) [%]		Bias [%]	RMSE [%]	Phase Shift [months]		Bias Score [1]	RMSE Score [1]	Seasonal Cycle Score [1]	Spatial Distribution Score [1]	Interannual Variability Score [1]	Overall Score [1]
Benchmark	[-]	75.1
CRUNCEPv7	[-]	65.4	65.4	0.00	65.3	79.6		1.82	12.0	1.45		0.46	0.41	0.77	0.94	0.66	0.61
GSWP3v1	[-]	69.5	69.5	0.00	65.3	79.6		5.43	14.1	1.53		0.41	0.30	0.76	0.95	0.59	0.55
WATCH	[-]	71.2	71.2	0.00	65.6	79.6		6.52	9.59	1.31		0.47	0.52	0.78	0.96	0.77	0.67

	Download Data	Period Mean (original grids) [%]	Model Period Mean (intersection) [%]	Model Period Mean (complement) [%]	Benchmark Period Mean (intersection) [%]	Benchmark Period Mean (complement) [%]		Bias [%]	RMSE [%]	Phase Shift [months]		Bias Score [1]	RMSE Score [1]	Seasonal Cycle Score [1]	Spatial Distribution Score [1]	Interannual Variability Score [1]	Overall Score [1]
Benchmark	[-]	44.7
CRUNCEPv7	[-]	44.3	44.6	0.00	40.3	72.7		6.45	11.6	0.891		0.47	0.50	0.86	0.94	0.76	0.67
GSWP3v1	[-]	43.3	43.6	0.00	40.3	72.7		5.49	11.8	0.525		0.52	0.44	0.90	0.91	0.64	0.64
WATCH	[-]	45.1	45.8	0.00	40.7	73.2		6.92	9.71	0.508		0.49	0.58	0.90	0.98	0.75	0.71

	Download Data	Period Mean (original grids) [%]	Model Period Mean (intersection) [%]	Model Period Mean (complement) [%]	Benchmark Period Mean (intersection) [%]	Benchmark Period Mean (complement) [%]		Bias [%]	RMSE [%]	Phase Shift [months]		Bias Score [1]	RMSE Score [1]	Seasonal Cycle Score [1]	Spatial Distribution Score [1]	Interannual Variability Score [1]	Overall Score [1]
Benchmark	[-]	57.1
CRUNCEPv7	[-]	51.9	50.7	0.00	52.2	80.0		-0.842	10.7	0.757		0.57	0.56	0.87	0.92	0.74	0.70
GSWP3v1	[-]	51.6	50.6	0.00	52.2	80.0		-0.865	12.7	0.949		0.58	0.46	0.84	0.93	0.70	0.66
WATCH	[-]	55.5	54.1	0.00	52.8	80.0		1.89	7.48	0.575		0.71	0.65	0.91	0.99	0.83	0.79

	Download Data	Period Mean (original grids) [%]	Model Period Mean (intersection) [%]	Model Period Mean (complement) [%]	Benchmark Period Mean (intersection) [%]	Benchmark Period Mean (complement) [%]		Bias [%]	RMSE [%]	Phase Shift [months]		Bias Score [1]	RMSE Score [1]	Seasonal Cycle Score [1]	Spatial Distribution Score [1]	Interannual Variability Score [1]	Overall Score [1]
Benchmark	[-]	83.0
CRUNCEPv7	[-]	80.3	80.1	0.00	84.0	80.1		-3.44	7.07	1.08		0.46	0.43	0.85	0.99	0.70	0.64
GSWP3v1	[-]	81.5	81.7	0.00	84.0	80.1		-1.99	8.29	1.47		0.50	0.32	0.78	0.91	0.64	0.58
WATCH	[-]	85.0	84.9	0.00	84.2	80.3		0.644	5.32	1.05		0.58	0.49	0.84	0.95	0.76	0.69

	Download Data	Period Mean (original grids) [%]	Model Period Mean (intersection) [%]	Model Period Mean (complement) [%]	Benchmark Period Mean (intersection) [%]	Benchmark Period Mean (complement) [%]		Bias [%]	RMSE [%]	Phase Shift [months]		Bias Score [1]	RMSE Score [1]	Seasonal Cycle Score [1]	Spatial Distribution Score [1]	Interannual Variability Score [1]	Overall Score [1]
Benchmark	[-]	74.0
CRUNCEPv7	[-]	62.9	62.9	0.00	70.5	78.8		-5.62	9.81	0.769		0.57	0.54	0.89	0.95	0.79	0.71
GSWP3v1	[-]	68.0	67.9	0.00	70.5	78.8		-1.05	10.8	0.957		0.58	0.39	0.87	0.91	0.66	0.63
WATCH	[-]	72.8	72.8	0.00	70.6	78.8		3.13	5.67	0.580		0.68	0.64	0.92	1.0	0.82	0.79

	Download Data	Period Mean (original grids) [%]	Model Period Mean (intersection) [%]	Model Period Mean (complement) [%]	Benchmark Period Mean (intersection) [%]	Benchmark Period Mean (complement) [%]		Bias [%]	RMSE [%]	Phase Shift [months]		Bias Score [1]	RMSE Score [1]	Seasonal Cycle Score [1]	Spatial Distribution Score [1]	Interannual Variability Score [1]	Overall Score [1]
Benchmark	[-]	69.1
CRUNCEPv7	[-]	62.4	62.6	0.00	65.7	77.8		-2.09	10.2	1.01		0.55	0.48	0.86	0.92	0.66	0.66
GSWP3v1	[-]	62.0	62.2	0.00	65.7	77.8		-2.57	12.5	1.18		0.53	0.39	0.83	0.92	0.68	0.62
WATCH	[-]	64.5	64.9	0.00	65.9	78.0		-0.293	5.84	0.624		0.69	0.62	0.91	0.99	0.83	0.78

	Download Data	Period Mean (original grids) [%]	Model Period Mean (intersection) [%]	Model Period Mean (complement) [%]	Benchmark Period Mean (intersection) [%]	Benchmark Period Mean (complement) [%]		Bias [%]	RMSE [%]	Phase Shift [months]		Bias Score [1]	RMSE Score [1]	Seasonal Cycle Score [1]	Spatial Distribution Score [1]	Interannual Variability Score [1]	Overall Score [1]
Benchmark	[-]	77.4
CRUNCEPv7	[-]	71.0	71.2	0.00	74.2	80.1		-2.62	8.44	0.806		0.57	0.48	0.90	0.99	0.71	0.69
GSWP3v1	[-]	72.7	72.8	0.00	74.2	80.1		-1.16	12.6	1.23		0.44	0.29	0.84	0.99	0.57	0.57
WATCH	[-]	75.7	75.9	0.00	75.1	80.2		0.713	5.63	0.749		0.65	0.56	0.91	0.98	0.80	0.75

	Download Data	Period Mean (original grids) [%]	Model Period Mean (intersection) [%]	Model Period Mean (complement) [%]	Benchmark Period Mean (intersection) [%]	Benchmark Period Mean (complement) [%]		Bias [%]	RMSE [%]	Phase Shift [months]		Bias Score [1]	RMSE Score [1]	Seasonal Cycle Score [1]	Spatial Distribution Score [1]	Interannual Variability Score [1]	Overall Score [1]
Benchmark	[-]	65.1
CRUNCEPv7	[-]	64.7	64.7	0.00	62.3	78.0		2.84	7.77	1.34		0.61	0.49	0.80	0.99	0.80	0.70
GSWP3v1	[-]	71.3	71.3	0.00	62.3	78.0		9.15	13.9	1.83		0.36	0.31	0.72	0.98	0.63	0.55
WATCH	[-]	67.9	67.9	0.00	62.9	78.0		5.19	6.79	0.914		0.52	0.63	0.87	1.0	0.89	0.76

Australia Boreal Asia Boreal North America Central America Central Asia Equatorial Asia Europe Globe Middle East Northern Hemisphere Africa Northern Hemisphere South America Southeast Asia Southern Hemisphere Africa Southern Hemisphere South America Temperate North America Temporally integrated period mean Temporally integrated period mean max month Temporally integrated mean phase shift Temporally integrated mean phase shift score Temporally integrated period mean bias Temporally integrated period mean bias score Temporally integrated period mean rmse Temporally integrated period mean rmse score Interannual variability Interannual variability score Spatially integrated regional mean cycle Spatially integrated regional mean detrended cycle Spatially integrated regional mean

  creation_date: Wed Dec 2 12:03:21 PST 2015

  Conventions: Please contact Prof. James Randerson (Email: jranders@uci.edu) or Dr. Mingquan Mu (mmu@uci.edu) for any question

  source_file: This product is generated from monthly ERA interim observations

  title: derived ERA interim

  Approach: I read the monthly 2m dewpoint temperature and 2m surface air temperature from original file, and calculated 2m relative humidity using the way by John Dutton (Ceaseless Wind, John Dutton. McGraw-Hill, 1976. pp 273-274). The final data were saved by each month and each year.

  Temporal resolution: monthly

  General information: This product was derived from ERA interim Dataset (1979-present).

  Spatial resolution: 0.5x0.5, 1x1 and 2.5x2.5 degree

  Derived data code: http://redwood.ess.uci.edu/mingquan/www/ILAMB/Download/CODES/CODES/subroutines/convert/convert-rhums-ERA-interim.ncl