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
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
I68_CRUJRA	[-]	2.39	2.50	3.54	0.0489			-2.03		0.755	0.830	0.792
I69_CRUJRA	[-]	2.38	2.51	3.53	0.0372	0.00901		-2.06		0.751	0.830	0.790

	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
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
I68_CRUJRA	[-]	2.48	2.26	5.20	0.0143	0.000959		-4.42		0.393	0.171	0.282
I69_CRUJRA	[-]	2.49	2.29	5.19	0.0131	0.00842		-4.39		0.397	0.185	0.291

	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
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
I68_CRUJRA	[-]	3.12	2.91	4.47	0.218	0.000112		-1.63		0.404	0.320	0.362
I69_CRUJRA	[-]	3.11	2.92	4.46	0.201	0.00711		-1.66		0.405	0.347	0.376

	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
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
I68_CRUJRA	[-]	0.364	0.338	1.08	0.0256			-2.38		0.528	0.0678	0.298
I69_CRUJRA	[-]	0.369	0.345	1.08	0.0247	0.00346		-2.38		0.528	0.0749	0.301

	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
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
I68_CRUJRA	[-]	2.16	1.58	2.21	0.574	0.00166		-0.586		0.879	0.959	0.919
I69_CRUJRA	[-]	2.10	1.59	2.13	0.512	0.0783		-0.631		0.879	0.974	0.926

	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
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
I68_CRUJRA	[-]	1.72	1.62	6.41	0.0428			-5.48		0.516	0.0486	0.282
I69_CRUJRA	[-]	1.73	1.63	6.40	0.0462	0.00484		-5.48		0.514	0.0550	0.285

	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
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
I68_CRUJRA	[-]	3.76	3.60	17.4	0.168			-7.68		0.517	0.173	0.345
I69_CRUJRA	[-]	3.78	3.62	17.4	0.167	0.00434		-7.69		0.516	0.176	0.346

	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
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
I68_CRUJRA	[-]	2.98	2.68	6.60	0.299	0.000314		-5.55		0.600	0.530	0.565
I69_CRUJRA	[-]	2.99	2.70	6.56	0.290	0.0366		-5.56		0.602	0.551	0.576

	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
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
I68_CRUJRA	[-]	0.406	0.379	1.35	0.0298			-3.07		0.521	0.0359	0.279
I69_CRUJRA	[-]	0.417	0.388	1.34	0.0324	0.00149		-3.07		0.521	0.0381	0.280

	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
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
I68_CRUJRA	[-]	2.05	1.79	3.77	0.256	0.00216		-2.35		0.580	0.330	0.455
I69_CRUJRA	[-]	2.08	1.82	3.75	0.274	0.0207		-2.32		0.579	0.343	0.461

	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
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
I68_CRUJRA	[-]	1.25	1.07	4.89	0.149	0.00238		-7.67		0.496	0.108	0.302
I69_CRUJRA	[-]	1.26	1.11	4.87	0.133	0.0261		-7.66		0.496	0.113	0.305

	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
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
I68_CRUJRA	[-]	39.3	36.2	88.2	2.94	0.00803		-3.89		0.550	0.438	0.494
I69_CRUJRA	[-]	39.1	36.4	88.0	2.72	0.278		-3.90		0.548	0.438	0.493

	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
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
I68_CRUJRA	[-]	1.37	1.28	3.41	0.0951			-1.26		0.625	0.132	0.378
I69_CRUJRA	[-]	1.38	1.30	3.39	0.0927	0.0114		-1.26		0.623	0.135	0.379

	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
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
I68_CRUJRA	[-]	0.758	0.637	3.61	0.111			-5.47		0.503	0.0339	0.268
I69_CRUJRA	[-]	0.773	0.651	3.60	0.112	0.0111		-5.46		0.503	0.0369	0.270

	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
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
I68_CRUJRA	[-]	1.23	0.920	1.98	0.284	0.000448		-3.29		0.676	0.760	0.718
I69_CRUJRA	[-]	1.20	0.928	1.95	0.255	0.0290		-3.31		0.672	0.773	0.723

	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
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
I68_CRUJRA	[-]	1.44	1.30	4.06	0.0968			-7.31		0.528	0.295	0.411
I69_CRUJRA	[-]	1.43	1.30	4.06	0.0809	0.00206		-7.32		0.528	0.297	0.412

	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
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
I68_CRUJRA	[-]	1.10	0.999	2.49	0.103			-3.08		0.621	0.0255	0.323
I69_CRUJRA	[-]	1.09	1.01	2.49	0.0947	0.00374		-3.08		0.617	0.0305	0.324

	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
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
I68_CRUJRA	[-]	0.799	0.839	3.82	0.00665			-7.46		0.496	0.0627	0.279
I69_CRUJRA	[-]	0.796	0.837	3.81	0.00511	0.00396		-7.48		0.495	0.0703	0.283

	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
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
I68_CRUJRA	[-]	6.07	5.81	6.58	0.229			-0.863		0.739	0.354	0.547
I69_CRUJRA	[-]	5.99	5.77	6.58	0.194	0.000106		-0.912		0.737	0.386	0.561

	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
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
I68_CRUJRA	[-]	3.14	3.04	3.43	0.120			-0.524		0.294	0.119	0.206
I69_CRUJRA	[-]	3.10	3.02	3.42	0.108	0.00578		-0.540		0.294	0.135	0.215

	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
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
I68_CRUJRA	[-]	0.675	0.628	1.75	0.0550	4.31e-06		-3.45		0.584	0.306	0.445
I69_CRUJRA	[-]	0.630	0.604	1.74	0.0364	0.0104		-3.52		0.569	0.333	0.451

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