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 Global - Land 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) [Tg yr-1]	Model Period Mean (intersection) [Tg yr-1]	Benchmark Period Mean (intersection) [Tg yr-1]	Model Period Mean (complement) [Tg yr-1]	Benchmark Period Mean (complement) [Tg yr-1]		Bias [kg ha-1 yr-1]		Bias Score [1]	Spatial Distribution Score [1]	Overall Score [1]
Benchmark	[-]	3.47
I62_CRUJRA	[-]	2.30	2.44	3.53	0.0364	0.00901		-2.22		0.736	0.793	0.765
I63_CRUJRA	[-]	2.30	2.44	3.53	0.0364	0.00901		-2.22		0.736	0.793	0.765
I65_CRUJRA	[-]	2.38	2.52	3.53	0.0374	0.00901		-2.03		0.754	0.834	0.794
I67_GSWP3	[-]	2.29	2.39	3.54	0.0486			-2.28		0.721	0.795	0.758

	Download Data	Period Mean (original grids) [Tg yr-1]	Model Period Mean (intersection) [Tg yr-1]	Benchmark Period Mean (intersection) [Tg yr-1]	Model Period Mean (complement) [Tg yr-1]	Benchmark Period Mean (complement) [Tg yr-1]		Bias [kg ha-1 yr-1]		Bias Score [1]	Spatial Distribution Score [1]	Overall Score [1]
Benchmark	[-]	5.23
I62_CRUJRA	[-]	2.46	2.26	5.19	0.0132	0.00842		-4.43		0.395	0.209	0.302
I63_CRUJRA	[-]	2.46	2.26	5.19	0.0132	0.00842		-4.43		0.395	0.209	0.302
I65_CRUJRA	[-]	2.49	2.28	5.19	0.0130	0.00842		-4.41		0.397	0.189	0.293
I67_GSWP3	[-]	2.38	2.17	5.20	0.0129	0.000959		-4.55		0.388	0.146	0.267

	Download Data	Period Mean (original grids) [Tg yr-1]	Model Period Mean (intersection) [Tg yr-1]	Benchmark Period Mean (intersection) [Tg yr-1]	Model Period Mean (complement) [Tg yr-1]	Benchmark Period Mean (complement) [Tg yr-1]		Bias [kg ha-1 yr-1]		Bias Score [1]	Spatial Distribution Score [1]	Overall Score [1]
Benchmark	[-]	4.53
I62_CRUJRA	[-]	3.23	3.03	4.46	0.202	0.00711		-1.52		0.415	0.390	0.402
I63_CRUJRA	[-]	3.23	3.03	4.46	0.202	0.00711		-1.52		0.415	0.390	0.402
I65_CRUJRA	[-]	3.21	3.01	4.46	0.204	0.00711		-1.55		0.412	0.384	0.398
I67_GSWP3	[-]	3.16	2.96	4.47	0.206	0.000112		-1.57		0.407	0.284	0.345

	Download Data	Period Mean (original grids) [Tg yr-1]	Model Period Mean (intersection) [Tg yr-1]	Benchmark Period Mean (intersection) [Tg yr-1]	Model Period Mean (complement) [Tg yr-1]	Benchmark Period Mean (complement) [Tg yr-1]		Bias [kg ha-1 yr-1]		Bias Score [1]	Spatial Distribution Score [1]	Overall Score [1]
Benchmark	[-]	1.06
I62_CRUJRA	[-]	0.397	0.371	1.08	0.0260	0.00346		-2.29		0.543	0.0834	0.313
I63_CRUJRA	[-]	0.371	0.347	1.08	0.0251	0.00346		-2.38		0.529	0.0833	0.306
I65_CRUJRA	[-]	0.371	0.347	1.08	0.0245	0.00346		-2.38		0.529	0.0799	0.304
I67_GSWP3	[-]	0.396	0.370	1.08	0.0263			-2.28		0.546	0.0945	0.320

	Download Data	Period Mean (original grids) [Tg yr-1]	Model Period Mean (intersection) [Tg yr-1]	Benchmark Period Mean (intersection) [Tg yr-1]	Model Period Mean (complement) [Tg yr-1]	Benchmark Period Mean (complement) [Tg yr-1]		Bias [kg ha-1 yr-1]		Bias Score [1]	Spatial Distribution Score [1]	Overall Score [1]
Benchmark	[-]	2.20
I62_CRUJRA	[-]	2.01	1.52	2.13	0.489	0.0783		-1.03		0.867	0.958	0.912
I63_CRUJRA	[-]	2.01	1.52	2.13	0.489	0.0783		-1.03		0.867	0.958	0.912
I65_CRUJRA	[-]	2.10	1.59	2.13	0.511	0.0783		-0.640		0.879	0.974	0.927
I67_GSWP3	[-]	1.97	1.43	2.21	0.537	0.00166		-1.33		0.852	0.782	0.817

	Download Data	Period Mean (original grids) [Tg yr-1]	Model Period Mean (intersection) [Tg yr-1]	Benchmark Period Mean (intersection) [Tg yr-1]	Model Period Mean (complement) [Tg yr-1]	Benchmark Period Mean (complement) [Tg yr-1]		Bias [kg ha-1 yr-1]		Bias Score [1]	Spatial Distribution Score [1]	Overall Score [1]
Benchmark	[-]	6.28
I62_CRUJRA	[-]	1.78	1.68	6.40	0.0487	0.00484		-5.42		0.521	0.0410	0.281
I63_CRUJRA	[-]	1.76	1.65	6.40	0.0483	0.00484		-5.45		0.519	0.0442	0.282
I65_CRUJRA	[-]	1.73	1.63	6.40	0.0461	0.00484		-5.48		0.516	0.0524	0.284
I67_GSWP3	[-]	1.80	1.70	6.41	0.0462			-5.39		0.522	0.0514	0.287

	Download Data	Period Mean (original grids) [Tg yr-1]	Model Period Mean (intersection) [Tg yr-1]	Benchmark Period Mean (intersection) [Tg yr-1]	Model Period Mean (complement) [Tg yr-1]	Benchmark Period Mean (complement) [Tg yr-1]		Bias [kg ha-1 yr-1]		Bias Score [1]	Spatial Distribution Score [1]	Overall Score [1]
Benchmark	[-]	17.5
I62_CRUJRA	[-]	3.77	3.61	17.4	0.166	0.00434		-7.69		0.515	0.172	0.344
I63_CRUJRA	[-]	3.77	3.61	17.4	0.166	0.00434		-7.69		0.515	0.172	0.344
I65_CRUJRA	[-]	3.79	3.63	17.4	0.169	0.00434		-7.68		0.516	0.178	0.347
I67_GSWP3	[-]	3.61	3.46	17.4	0.164			-7.76		0.504	0.165	0.334

	Download Data	Period Mean (original grids) [Tg yr-1]	Model Period Mean (intersection) [Tg yr-1]	Benchmark Period Mean (intersection) [Tg yr-1]	Model Period Mean (complement) [Tg yr-1]	Benchmark Period Mean (complement) [Tg yr-1]		Bias [kg ha-1 yr-1]		Bias Score [1]	Spatial Distribution Score [1]	Overall Score [1]
Benchmark	[-]	6.61
I62_CRUJRA	[-]	2.92	2.64	6.56	0.280	0.0366		-5.65		0.595	0.520	0.558
I63_CRUJRA	[-]	2.92	2.64	6.56	0.280	0.0366		-5.65		0.595	0.520	0.558
I65_CRUJRA	[-]	2.99	2.69	6.56	0.291	0.0366		-5.56		0.602	0.554	0.578
I67_GSWP3	[-]	2.77	2.49	6.60	0.280	0.000314		-5.87		0.576	0.442	0.509

	Download Data	Period Mean (original grids) [Tg yr-1]	Model Period Mean (intersection) [Tg yr-1]	Benchmark Period Mean (intersection) [Tg yr-1]	Model Period Mean (complement) [Tg yr-1]	Benchmark Period Mean (complement) [Tg yr-1]		Bias [kg ha-1 yr-1]		Bias Score [1]	Spatial Distribution Score [1]	Overall Score [1]
Benchmark	[-]	1.30
I62_CRUJRA	[-]	0.435	0.405	1.34	0.0333	0.00149		-3.02		0.529	0.0407	0.285
I63_CRUJRA	[-]	0.416	0.387	1.34	0.0323	0.00149		-3.08		0.521	0.0411	0.281
I65_CRUJRA	[-]	0.418	0.389	1.34	0.0321	0.00149		-3.07		0.522	0.0409	0.281
I67_GSWP3	[-]	0.450	0.423	1.35	0.0307			-2.93		0.543	0.0495	0.296

	Download Data	Period Mean (original grids) [Tg yr-1]	Model Period Mean (intersection) [Tg yr-1]	Benchmark Period Mean (intersection) [Tg yr-1]	Model Period Mean (complement) [Tg yr-1]	Benchmark Period Mean (complement) [Tg yr-1]		Bias [kg ha-1 yr-1]		Bias Score [1]	Spatial Distribution Score [1]	Overall Score [1]
Benchmark	[-]	3.77
I62_CRUJRA	[-]	2.07	1.80	3.75	0.275	0.0207		-2.34		0.577	0.346	0.462
I63_CRUJRA	[-]	2.07	1.80	3.75	0.275	0.0207		-2.34		0.577	0.346	0.462
I65_CRUJRA	[-]	2.10	1.82	3.75	0.277	0.0207		-2.31		0.580	0.348	0.464
I67_GSWP3	[-]	1.98	1.73	3.77	0.251	0.00216		-2.43		0.573	0.289	0.431

	Download Data	Period Mean (original grids) [Tg yr-1]	Model Period Mean (intersection) [Tg yr-1]	Benchmark Period Mean (intersection) [Tg yr-1]	Model Period Mean (complement) [Tg yr-1]	Benchmark Period Mean (complement) [Tg yr-1]		Bias [kg ha-1 yr-1]		Bias Score [1]	Spatial Distribution Score [1]	Overall Score [1]
Benchmark	[-]	4.91
I62_CRUJRA	[-]	1.26	1.11	4.87	0.135	0.0261		-7.65		0.497	0.103	0.300
I63_CRUJRA	[-]	1.26	1.11	4.87	0.134	0.0261		-7.66		0.497	0.104	0.300
I65_CRUJRA	[-]	1.25	1.10	4.87	0.132	0.0261		-7.68		0.495	0.114	0.305
I67_GSWP3	[-]	1.20	1.04	4.89	0.141	0.00238		-7.76		0.488	0.0999	0.294

	Download Data	Period Mean (original grids) [Tg yr-1]	Model Period Mean (intersection) [Tg yr-1]	Benchmark Period Mean (intersection) [Tg yr-1]	Model Period Mean (complement) [Tg yr-1]	Benchmark Period Mean (complement) [Tg yr-1]		Bias [kg ha-1 yr-1]		Bias Score [1]	Spatial Distribution Score [1]	Overall Score [1]
Benchmark	[-]	88.2
I62_CRUJRA	[-]	38.7	36.0	88.0	2.68	0.278		-3.93		0.547	0.416	0.481
I63_CRUJRA	[-]	38.6	35.9	88.0	2.67	0.278		-3.94		0.546	0.418	0.482
I65_CRUJRA	[-]	39.3	36.5	88.0	2.73	0.278		-3.88		0.550	0.443	0.496
I67_GSWP3	[-]	38.4	35.5	88.2	2.80	0.00803		-3.95		0.542	0.410	0.476

	Download Data	Period Mean (original grids) [Tg yr-1]	Model Period Mean (intersection) [Tg yr-1]	Benchmark Period Mean (intersection) [Tg yr-1]	Model Period Mean (complement) [Tg yr-1]	Benchmark Period Mean (complement) [Tg yr-1]		Bias [kg ha-1 yr-1]		Bias Score [1]	Spatial Distribution Score [1]	Overall Score [1]
Benchmark	[-]	3.41
I62_CRUJRA	[-]	1.38	1.30	3.39	0.0919	0.0114		-1.27		0.623	0.132	0.378
I63_CRUJRA	[-]	1.38	1.30	3.39	0.0919	0.0114		-1.27		0.623	0.132	0.378
I65_CRUJRA	[-]	1.38	1.30	3.39	0.0924	0.0114		-1.26		0.623	0.134	0.379
I67_GSWP3	[-]	1.21	1.13	3.41	0.0850			-1.36		0.600	0.112	0.356

	Download Data	Period Mean (original grids) [Tg yr-1]	Model Period Mean (intersection) [Tg yr-1]	Benchmark Period Mean (intersection) [Tg yr-1]	Model Period Mean (complement) [Tg yr-1]	Benchmark Period Mean (complement) [Tg yr-1]		Bias [kg ha-1 yr-1]		Bias Score [1]	Spatial Distribution Score [1]	Overall Score [1]
Benchmark	[-]	3.56
I62_CRUJRA	[-]	0.797	0.673	3.60	0.114	0.0111		-5.42		0.508	0.0404	0.274
I63_CRUJRA	[-]	0.778	0.658	3.60	0.111	0.0111		-5.45		0.505	0.0401	0.272
I65_CRUJRA	[-]	0.772	0.651	3.60	0.111	0.0111		-5.46		0.503	0.0379	0.270
I67_GSWP3	[-]	0.763	0.653	3.61	0.0989			-5.45		0.506	0.0398	0.273

	Download Data	Period Mean (original grids) [Tg yr-1]	Model Period Mean (intersection) [Tg yr-1]	Benchmark Period Mean (intersection) [Tg yr-1]	Model Period Mean (complement) [Tg yr-1]	Benchmark Period Mean (complement) [Tg yr-1]		Bias [kg ha-1 yr-1]		Bias Score [1]	Spatial Distribution Score [1]	Overall Score [1]
Benchmark	[-]	1.98
I62_CRUJRA	[-]	1.17	0.911	1.95	0.246	0.0290		-3.40		0.668	0.742	0.705
I63_CRUJRA	[-]	1.17	0.911	1.95	0.246	0.0290		-3.40		0.668	0.742	0.705
I65_CRUJRA	[-]	1.21	0.933	1.95	0.255	0.0290		-3.30		0.674	0.774	0.724
I67_GSWP3	[-]	1.18	0.891	1.98	0.270	0.000448		-3.44		0.669	0.679	0.674

	Download Data	Period Mean (original grids) [Tg yr-1]	Model Period Mean (intersection) [Tg yr-1]	Benchmark Period Mean (intersection) [Tg yr-1]	Model Period Mean (complement) [Tg yr-1]	Benchmark Period Mean (complement) [Tg yr-1]		Bias [kg ha-1 yr-1]		Bias Score [1]	Spatial Distribution Score [1]	Overall Score [1]
Benchmark	[-]	4.09
I62_CRUJRA	[-]	1.41	1.29	4.06	0.0792	0.00206		-7.37		0.525	0.280	0.403
I63_CRUJRA	[-]	1.41	1.28	4.06	0.0792	0.00206		-7.37		0.525	0.281	0.403
I65_CRUJRA	[-]	1.43	1.31	4.06	0.0815	0.00206		-7.30		0.529	0.310	0.420
I67_GSWP3	[-]	1.46	1.32	4.06	0.0981			-7.24		0.533	0.329	0.431

	Download Data	Period Mean (original grids) [Tg yr-1]	Model Period Mean (intersection) [Tg yr-1]	Benchmark Period Mean (intersection) [Tg yr-1]	Model Period Mean (complement) [Tg yr-1]	Benchmark Period Mean (complement) [Tg yr-1]		Bias [kg ha-1 yr-1]		Bias Score [1]	Spatial Distribution Score [1]	Overall Score [1]
Benchmark	[-]	2.46
I62_CRUJRA	[-]	1.10	1.01	2.49	0.0946	0.00374		-3.07		0.614	0.0293	0.321
I63_CRUJRA	[-]	1.09	1.00	2.49	0.0946	0.00374		-3.09		0.619	0.0303	0.325
I65_CRUJRA	[-]	1.09	0.999	2.49	0.0935	0.00374		-3.10		0.620	0.0293	0.325
I67_GSWP3	[-]	1.11	1.02	2.49	0.0962			-3.03		0.607	0.0276	0.317

	Download Data	Period Mean (original grids) [Tg yr-1]	Model Period Mean (intersection) [Tg yr-1]	Benchmark Period Mean (intersection) [Tg yr-1]	Model Period Mean (complement) [Tg yr-1]	Benchmark Period Mean (complement) [Tg yr-1]		Bias [kg ha-1 yr-1]		Bias Score [1]	Spatial Distribution Score [1]	Overall Score [1]
Benchmark	[-]	3.85
I62_CRUJRA	[-]	0.805	0.845	3.81	0.00517	0.00396		-7.46		0.490	0.0708	0.281
I63_CRUJRA	[-]	0.804	0.844	3.81	0.00516	0.00396		-7.46		0.490	0.0713	0.281
I65_CRUJRA	[-]	0.794	0.836	3.81	0.00505	0.00396		-7.49		0.495	0.0701	0.283
I67_GSWP3	[-]	0.812	0.852	3.82	0.00672			-7.43		0.493	0.0717	0.282

	Download Data	Period Mean (original grids) [Tg yr-1]	Model Period Mean (intersection) [Tg yr-1]	Benchmark Period Mean (intersection) [Tg yr-1]	Model Period Mean (complement) [Tg yr-1]	Benchmark Period Mean (complement) [Tg yr-1]		Bias [kg ha-1 yr-1]		Bias Score [1]	Spatial Distribution Score [1]	Overall Score [1]
Benchmark	[-]	6.52
I62_CRUJRA	[-]	5.71	5.49	6.58	0.188	0.000106		-1.26		0.712	0.363	0.537
I63_CRUJRA	[-]	5.71	5.49	6.58	0.188	0.000106		-1.26		0.712	0.363	0.537
I65_CRUJRA	[-]	6.04	5.81	6.58	0.196	0.000106		-0.859		0.742	0.368	0.555
I67_GSWP3	[-]	6.02	5.77	6.58	0.221			-0.914		0.743	0.255	0.499

	Download Data	Period Mean (original grids) [Tg yr-1]	Model Period Mean (intersection) [Tg yr-1]	Benchmark Period Mean (intersection) [Tg yr-1]	Model Period Mean (complement) [Tg yr-1]	Benchmark Period Mean (complement) [Tg yr-1]		Bias [kg ha-1 yr-1]		Bias Score [1]	Spatial Distribution Score [1]	Overall Score [1]
Benchmark	[-]	3.44
I62_CRUJRA	[-]	3.07	2.99	3.42	0.103	0.00578		-0.600		0.292	0.124	0.208
I63_CRUJRA	[-]	3.07	2.99	3.42	0.103	0.00578		-0.600		0.292	0.124	0.208
I65_CRUJRA	[-]	3.15	3.07	3.42	0.110	0.00578		-0.461		0.295	0.143	0.219
I67_GSWP3	[-]	3.11	3.02	3.43	0.118			-0.567		0.297	0.104	0.200

	Download Data	Period Mean (original grids) [Tg yr-1]	Model Period Mean (intersection) [Tg yr-1]	Benchmark Period Mean (intersection) [Tg yr-1]	Model Period Mean (complement) [Tg yr-1]	Benchmark Period Mean (complement) [Tg yr-1]		Bias [kg ha-1 yr-1]		Bias Score [1]	Spatial Distribution Score [1]	Overall Score [1]
Benchmark	[-]	1.80
I62_CRUJRA	[-]	0.628	0.600	1.74	0.0369	0.0104		-3.53		0.570	0.325	0.447
I63_CRUJRA	[-]	0.628	0.600	1.74	0.0369	0.0104		-3.53		0.569	0.325	0.447
I65_CRUJRA	[-]	0.630	0.603	1.74	0.0365	0.0104		-3.52		0.569	0.332	0.451
I67_GSWP3	[-]	0.687	0.647	1.75	0.0480	4.31e-06		-3.39		0.586	0.285	0.435

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 Global - Land 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 bias Temporally integrated period mean bias score

  Title:

Biological Nitrogen Fixation

  Version:

1

  Institutions:

University of Exeter

  Source:

A comprehensive global meta analysis of field measurements

  History:

2020-12-14: obtained dataset 2020-12-14: converted to netCDF

  References:

Davies-Barnard, T. and Friedlingstein, P. (2020), The Global Distribution of Biological Nitrogen Fixation in Terrestrial Natural Ecosystems, Global Biogeochemical Cycles, 3, doi:10.1029/2019GB006387

  Comments:

time_period: single estimate from 1980 through 2019

temporal_resolution: monthly

spatial_resolution: 0.5 degree

units: kg m-2 s-1

  Convention:

CF-1.8