Africa - Central Africa - Sahel Africa - South Asia - East Siberia Asia - Indonesia Asia - North Central Asia - South Central Asia and China Asia - Southeast Asia and India Asia - West Siberia Australia Europe Globe Middle East and Sahara North America - Alaska and Northern Canada North America - Central America North America - Eastern United States North America - Southern Canada North America - Western United States South America - Amazon South America - Southeast South America - Southwest

	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	[-]	77.9
CRUNCEPv7	[-]	72.2	72.1		77.8	80.3		-5.35	9.88	1.69		0.325	0.450	0.758	0.894	0.591	0.578
GSWP3v1	[-]	68.8	69.0		77.8	80.3		-8.18	14.1	1.93		0.336	0.233	0.720	0.997	0.485	0.501
WFDEI	[-]	79.7	79.8		77.8	80.3		1.91	6.29	1.01		0.670	0.453	0.862	0.999	0.806	0.707

	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	[-]	53.6
CRUNCEPv7	[-]	51.1	50.6		53.2	77.5		-2.43	10.3	0.252		0.734	0.648	0.962	0.940	0.550	0.747
GSWP3v1	[-]	51.4	50.8		53.2	77.5		-2.18	11.8	0.546		0.740	0.590	0.930	0.973	0.837	0.777
WFDEI	[-]	56.7	56.1		53.2	77.5		2.83	9.37	0.337		0.803	0.641	0.952	0.998	0.875	0.818

	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	[-]	64.2
CRUNCEPv7	[-]	61.3	61.2		63.5	77.8		-0.992	9.54	0.948		0.628	0.514	0.870	0.942	0.537	0.668
GSWP3v1	[-]	61.4	61.4		63.5	77.8		-0.864	11.3	1.13		0.605	0.437	0.843	0.970	0.757	0.675
WFDEI	[-]	61.3	61.2		63.5	77.8		-1.44	7.91	0.681		0.729	0.522	0.910	0.998	0.836	0.753

	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	[-]	77.6
CRUNCEPv7	[-]	74.5	74.4		77.1	83.4		-0.533	17.6	3.20		0.276	0.0915	0.455	0.420	0.242	0.263
GSWP3v1	[-]	88.5	88.4		77.1	83.4		11.6	17.8	4.53		0.114	0.0762	0.215	0.746	0.565	0.299
WFDEI	[-]	88.1	88.1		77.1	83.4		10.9	13.2	2.93		0.152	0.237	0.525	0.866	0.782	0.467

	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	[-]	84.2
CRUNCEPv7	[-]	83.1	83.1		85.0	81.2		-1.77	5.23	1.99		0.451	0.402	0.693	0.900	0.568	0.570
GSWP3v1	[-]	85.4	85.5		85.0	81.2		-0.483	5.21	1.54		0.594	0.236	0.778	0.999	0.518	0.560
WFDEI	[-]	88.4	88.5		85.0	81.2		2.71	4.99	1.03		0.463	0.346	0.855	0.984	0.742	0.623

	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	[-]	72.3
CRUNCEPv7	[-]	75.1	75.1		72.2	78.9		3.06	11.1	1.86		0.491	0.399	0.734	0.590	0.625	0.540
GSWP3v1	[-]	82.2	82.3		72.2	78.9		10.1	17.7	1.89		0.331	0.201	0.729	0.980	0.571	0.502
WFDEI	[-]	81.2	81.3		72.2	78.9		8.98	11.1	1.74		0.366	0.480	0.757	0.943	0.849	0.646

	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	[-]	61.3
CRUNCEPv7	[-]	55.5	55.6		61.0	71.3		-4.13	13.6	1.44		0.530	0.517	0.801	0.888	0.816	0.678
GSWP3v1	[-]	64.6	64.8		61.0	71.3		4.46	16.1	1.95		0.549	0.321	0.706	0.995	0.757	0.608
WFDEI	[-]	65.3	65.5		61.0	71.3		5.08	9.41	0.951		0.617	0.497	0.870	0.997	0.860	0.723

	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	[-]	69.0
CRUNCEPv7	[-]	60.5	60.6		68.3	79.0		-5.32	10.2	0.773		0.558	0.535	0.897	0.984	0.645	0.692
GSWP3v1	[-]	62.3	62.0		68.3	79.0		-3.91	11.5	0.951		0.615	0.390	0.870	0.944	0.658	0.644
WFDEI	[-]	67.5	67.4		68.3	79.0		0.596	7.74	0.513		0.700	0.485	0.924	0.994	0.847	0.739

	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	[-]	78.8
CRUNCEPv7	[-]	81.2	81.2		78.5	84.9		3.46	13.6	2.76		0.323	0.153	0.529	0.599	0.361	0.353
GSWP3v1	[-]	88.9	88.9		78.5	84.9		10.5	16.4	4.18		0.150	0.0987	0.282	0.851	0.527	0.335
WFDEI	[-]	89.5	89.4		78.5	84.9		11.0	12.8	3.62		0.144	0.280	0.373	0.861	0.744	0.447

	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	[-]	53.1
CRUNCEPv7	[-]	51.0	50.9		51.3	74.6		1.93	8.88	0.504		0.595	0.516	0.912	0.942	0.582	0.677
GSWP3v1	[-]	49.9	49.8		51.3	74.6		1.11	6.92	0.503		0.746	0.518	0.915	0.996	0.801	0.749
WFDEI	[-]	50.5	50.5		51.3	74.6		1.26	9.51	0.435		0.681	0.437	0.928	0.981	0.876	0.723

	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	[-]	76.7
CRUNCEPv7	[-]	76.5	76.4		76.6	78.3		0.572	5.78	1.25		0.651	0.512	0.836	0.831	0.817	0.693
GSWP3v1	[-]	77.3	77.3		76.6	78.3		0.678	9.21	0.925		0.604	0.312	0.873	0.768	0.628	0.583
WFDEI	[-]	79.6	79.6		76.6	78.3		2.77	6.64	1.03		0.624	0.453	0.873	0.941	0.854	0.700

	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	[-]	74.9
CRUNCEPv7	[-]	65.2	65.2		65.3	79.6		1.63	12.0	1.48		0.466	0.411	0.764	0.944	0.598	0.599
GSWP3v1	[-]	69.5	69.5		65.3	79.6		5.34	14.0	1.58		0.415	0.299	0.748	0.945	0.646	0.559
WFDEI	[-]	70.0	70.0		65.3	79.6		5.55	10.3	1.28		0.500	0.419	0.792	0.948	0.816	0.649

	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	[-]	37.9
CRUNCEPv7	[-]	42.8	42.8		36.6	70.8		7.69	12.9	0.891		0.424	0.500	0.852	0.957	0.623	0.643
GSWP3v1	[-]	41.3	41.3		36.6	70.8		6.32	12.2	0.582		0.493	0.432	0.897	0.918	0.745	0.653
WFDEI	[-]	38.4	38.5		36.6	70.8		3.14	8.90	0.605		0.596	0.471	0.889	0.985	0.822	0.705

	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	[-]	77.9
CRUNCEPv7	[-]	82.8	82.7		77.6	82.9		6.30	14.3	2.85		0.288	0.179	0.538	0.455	0.431	0.345
GSWP3v1	[-]	88.4	88.4		77.6	82.9		11.3	17.1	2.65		0.153	0.116	0.589	0.997	0.623	0.432
WFDEI	[-]	87.6	87.7		77.6	82.9		10.2	12.9	2.67		0.194	0.259	0.585	0.999	0.718	0.502

	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	[-]	69.8
CRUNCEPv7	[-]	62.4	62.5		68.1	78.3		-2.34	8.46	1.34		0.491	0.444	0.793	0.996	0.676	0.641
GSWP3v1	[-]	66.8	66.9		68.1	78.3		0.911	9.47	1.61		0.491	0.333	0.753	0.988	0.642	0.590
WFDEI	[-]	67.5	67.5		68.1	78.3		1.01	8.47	0.990		0.531	0.391	0.848	0.995	0.803	0.660

	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	[-]	69.7
CRUNCEPv7	[-]	71.3	71.4		69.4	76.3		2.43	5.67	1.78		0.650	0.470	0.731	0.989	0.786	0.683
GSWP3v1	[-]	76.1	76.1		69.4	76.3		6.68	11.5	2.51		0.362	0.252	0.612	0.999	0.685	0.527
WFDEI	[-]	72.5	72.6		69.4	76.3		3.26	7.97	1.67		0.553	0.340	0.757	0.989	0.914	0.649

	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	[-]	72.4
CRUNCEPv7	[-]	77.7	77.7		72.0	81.9		6.05	9.86	1.64		0.471	0.392	0.787	0.974	0.848	0.644
GSWP3v1	[-]	81.5	81.5		72.0	81.9		9.60	14.8	1.47		0.306	0.242	0.815	0.972	0.690	0.545
WFDEI	[-]	79.0	78.9		72.0	81.9		6.99	10.1	1.23		0.428	0.407	0.861	0.970	0.809	0.647

	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	[-]	53.7
CRUNCEPv7	[-]	53.4	53.6		53.2	81.4		0.918	8.60	0.779		0.723	0.545	0.907	0.978	0.757	0.742
GSWP3v1	[-]	63.6	63.7		53.2	81.4		10.7	15.3	1.02		0.421	0.430	0.881	0.986	0.792	0.656
WFDEI	[-]	59.2	59.3		53.2	81.4		6.39	11.5	0.641		0.593	0.468	0.922	0.985	0.917	0.726

	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	[-]	84.9
CRUNCEPv7	[-]	81.8	81.8		85.0	81.5		-3.16	6.79	0.859		0.510	0.453	0.894	0.999	0.607	0.653
GSWP3v1	[-]	80.3	80.3		85.0	81.5		-4.59	10.8	1.30		0.438	0.253	0.830	0.903	0.522	0.533
WFDEI	[-]	86.6	86.6		85.0	81.5		1.58	5.12	0.658		0.703	0.466	0.929	0.998	0.813	0.729

	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	[-]	70.7
CRUNCEPv7	[-]	69.5	69.3		70.4	79.2		-0.566	6.60	0.922		0.728	0.520	0.881	0.974	0.581	0.701
GSWP3v1	[-]	71.6	71.4		70.4	79.2		1.46	13.0	1.33		0.466	0.319	0.826	0.737	0.718	0.564
WFDEI	[-]	71.7	71.7		70.4	79.2		1.55	7.29	0.625		0.744	0.452	0.924	0.996	0.889	0.743

	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	[-]	65.5
CRUNCEPv7	[-]	52.6	52.7		63.7	81.7		-8.08	15.0	1.04		0.345	0.417	0.858	0.971	0.684	0.615
GSWP3v1	[-]	62.7	62.9		63.7	81.7		0.765	12.3	0.946		0.482	0.372	0.865	0.967	0.631	0.615
WFDEI	[-]	65.4	65.4		63.7	81.7		2.54	10.0	0.543		0.502	0.467	0.927	0.975	0.783	0.687

Africa - Central Africa - Sahel Africa - South Asia - East Siberia Asia - Indonesia Asia - North Central Asia - South Central Asia and China Asia - Southeast Asia and India Asia - West Siberia Australia Europe Globe Middle East and Sahara North America - Alaska and Northern Canada North America - Central America North America - Eastern United States North America - Southern Canada North America - Western United States South America - Amazon South America - Southeast South America - Southwest Temporally integrated period mean Temporally integrated period mean max month Temporally integrated mean phase shift Temporally integrated mean phase shift score Interannual variability Interannual variability score Temporally integrated period mean bias Temporally integrated period mean bias score Temporally integrated period mean rmse Temporally integrated period mean rmse 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