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
101	[-]	7.35	6.84	3.51	0.148			8.26		0.171	0.468	0.320
105	[-]	6.90	6.33	3.51	0.143			7.08		0.237	0.460	0.348
111	[-]	4.06	3.72	3.51	0.0920			0.879		0.595	0.790	0.692
112	[-]	4.61	4.25	3.51	0.0961			2.11		0.545	0.620	0.582
113	[-]	4.11	3.83	3.51	0.0854			1.15		0.576	0.748	0.662
114	[-]	3.90	3.62	3.51	0.0847			0.649		0.599	0.847	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	[-]	5.23
101	[-]	4.78	4.89	5.22	0.0393			-0.365		0.198	0.728	0.463
105	[-]	5.69	5.85	5.22	0.0393			1.10		0.189	0.586	0.388
111	[-]	4.80	4.87	5.22	0.0336			-0.399		0.225	0.680	0.453
112	[-]	4.99	5.07	5.22	0.0362			-0.0867		0.214	0.683	0.448
113	[-]	4.58	4.67	5.22	0.0300			-0.712		0.221	0.705	0.463
114	[-]	4.79	4.88	5.22	0.0322			-0.392		0.221	0.678	0.449

	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
101	[-]	12.0	11.3	4.49	0.803	0.00466		8.39		0.195	0.637	0.416
105	[-]	13.6	12.9	4.49	0.830	0.00466		10.1		0.185	0.329	0.257
111	[-]	11.2	10.6	4.49	0.637	0.00466		7.43		0.245	0.444	0.345
112	[-]	11.2	10.6	4.49	0.638	0.00466		7.41		0.235	0.464	0.350
113	[-]	10.5	9.95	4.49	0.557	0.00466		6.59		0.257	0.478	0.367
114	[-]	11.3	10.7	4.49	0.599	0.00466		7.48		0.241	0.404	0.323

	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
101	[-]	1.50	1.35	1.06	0.123	0.00304		1.41		0.381	0.793	0.587
105	[-]	0.359	0.320	1.06	0.0327	0.00304		-2.42		0.348	0.433	0.391
111	[-]	0.992	0.875	1.06	0.0990	0.00304		-0.316		0.448	0.781	0.615
112	[-]	0.992	0.873	1.06	0.0992	0.00304		-0.321		0.450	0.782	0.616
113	[-]	0.839	0.742	1.06	0.0811	0.00304		-0.815		0.512	0.863	0.688
114	[-]	0.844	0.748	1.06	0.0811	0.00304		-0.794		0.522	0.864	0.693

	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
101	[-]	5.67	3.84	2.18	1.59	0.0276		14.5		0.0702	0.204	0.137
105	[-]	5.48	3.71	2.18	1.54	0.0276		13.7		0.0743	0.264	0.169
111	[-]	3.00	2.02	2.18	0.855	0.0276		3.39		0.599	0.463	0.531
112	[-]	3.19	2.16	2.18	0.903	0.0276		4.16		0.528	0.476	0.502
113	[-]	3.03	2.07	2.18	0.835	0.0276		3.47		0.575	0.538	0.557
114	[-]	2.94	1.97	2.18	0.846	0.0276		3.14		0.623	0.490	0.557

	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
101	[-]	6.36	5.89	6.39	0.241			-0.514		0.514	0.725	0.620
105	[-]	3.60	3.33	6.39	0.108			-3.48		0.296	0.556	0.426
111	[-]	5.18	4.81	6.39	0.187			-1.76		0.417	0.753	0.585
112	[-]	4.98	4.62	6.39	0.184			-1.98		0.392	0.748	0.570
113	[-]	4.61	4.25	6.39	0.184			-2.40		0.382	0.656	0.519
114	[-]	4.35	4.00	6.39	0.176			-2.69		0.343	0.676	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	[-]	17.5
101	[-]	11.2	10.7	17.4	0.553			-3.54		0.446	0.905	0.676
105	[-]	6.62	6.26	17.4	0.411			-6.09		0.342	0.681	0.512
111	[-]	7.96	7.50	17.4	0.462			-5.37		0.360	0.789	0.574
112	[-]	7.65	7.22	17.4	0.451			-5.53		0.356	0.772	0.564
113	[-]	7.45	7.03	17.4	0.450			-5.64		0.358	0.746	0.552
114	[-]	7.48	7.06	17.4	0.448			-5.63		0.363	0.739	0.551

	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
101	[-]	6.38	5.44	6.61	0.770			-0.456		0.324	0.700	0.512
105	[-]	6.60	5.63	6.61	0.756			-0.183		0.358	0.702	0.530
111	[-]	4.91	4.33	6.61	0.484			-2.62		0.426	0.902	0.664
112	[-]	5.19	4.57	6.61	0.513			-2.20		0.421	0.885	0.653
113	[-]	4.76	4.21	6.61	0.452			-2.85		0.430	0.903	0.666
114	[-]	5.03	4.42	6.61	0.498			-2.46		0.436	0.902	0.669

	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
101	[-]	1.65	1.57	1.30	0.101			1.01		0.349	0.823	0.586
105	[-]	0.567	0.530	1.30	0.0453			-2.46		0.371	0.537	0.454
111	[-]	1.25	1.17	1.30	0.0951			-0.299		0.444	0.813	0.628
112	[-]	1.26	1.18	1.30	0.0945			-0.273		0.440	0.814	0.627
113	[-]	1.04	0.977	1.30	0.0758			-0.945		0.475	0.773	0.624
114	[-]	1.06	0.996	1.30	0.0777			-0.882		0.483	0.775	0.629

	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
101	[-]	6.93	5.66	3.75	1.16	0.0131		3.61		0.301	0.633	0.467
105	[-]	3.53	2.74	3.75	0.750	0.0131		-0.678		0.396	0.864	0.630
111	[-]	4.05	3.21	3.75	0.764	0.0131		0.0267		0.482	0.873	0.677
112	[-]	4.02	3.21	3.75	0.741	0.0131		-0.0108		0.462	0.884	0.673
113	[-]	4.05	3.33	3.75	0.656	0.0131		0.154		0.462	0.912	0.687
114	[-]	4.09	3.36	3.75	0.670	0.0131		0.186		0.449	0.901	0.675

	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
101	[-]	5.45	4.71	4.91	0.785			1.18		0.529	0.949	0.739
105	[-]	2.55	2.23	4.91	0.339			-4.86		0.363	0.787	0.575
111	[-]	3.75	3.28	4.91	0.512			-2.35		0.473	0.907	0.690
112	[-]	3.46	3.02	4.91	0.484			-2.96		0.445	0.874	0.659
113	[-]	2.95	2.59	4.91	0.389			-4.04		0.399	0.799	0.599
114	[-]	2.90	2.55	4.91	0.382			-4.15		0.395	0.792	0.593

	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
101	[-]	119.	108.	88.1	9.99	0.0731		2.23		0.376	0.728	0.552
105	[-]	95.4	86.6	88.1	7.75	0.0731		0.432		0.351	0.638	0.495
111	[-]	85.4	77.7	88.1	6.81	0.0731		-0.356		0.449	0.803	0.626
112	[-]	85.6	77.9	88.1	6.81	0.0731		-0.339		0.435	0.800	0.617
113	[-]	79.9	73.0	88.1	6.11	0.0731		-0.753		0.445	0.805	0.625
114	[-]	80.8	73.7	88.1	6.27	0.0731		-0.692		0.442	0.794	0.618

	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
101	[-]	3.20	2.70	3.38	0.421	1.08e-05		-0.257		0.759	0.894	0.827
105	[-]	2.16	1.85	3.38	0.250	1.08e-05		-0.834		0.763	0.594	0.679
111	[-]	2.50	2.11	3.38	0.319	1.08e-05		-0.658		0.758	0.717	0.738
112	[-]	2.45	2.07	3.38	0.313	1.08e-05		-0.685		0.758	0.698	0.728
113	[-]	2.36	2.03	3.38	0.266	1.08e-05		-0.719		0.755	0.646	0.701
114	[-]	2.39	2.06	3.38	0.266	1.08e-05		-0.695		0.753	0.655	0.704

	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
101	[-]	2.76	2.23	3.58	0.358	0.00193		-2.29		0.277	0.642	0.460
105	[-]	1.44	1.14	3.58	0.198	0.00193		-4.45		0.310	0.401	0.356
111	[-]	2.37	1.89	3.58	0.306	0.00193		-2.95		0.306	0.616	0.461
112	[-]	2.42	1.95	3.58	0.312	0.00193		-2.83		0.304	0.630	0.467
113	[-]	2.16	1.73	3.58	0.290	0.00193		-3.26		0.329	0.584	0.457
114	[-]	2.17	1.74	3.58	0.289	0.00193		-3.23		0.327	0.585	0.456

	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
101	[-]	3.32	2.45	1.97	0.781	0.00654		4.54		0.337	0.649	0.493
105	[-]	2.92	2.03	1.97	0.755	0.00654		3.01		0.385	0.559	0.472
111	[-]	2.29	1.72	1.97	0.512	0.00654		1.03		0.485	0.793	0.639
112	[-]	2.32	1.74	1.97	0.522	0.00654		1.13		0.476	0.804	0.640
113	[-]	2.08	1.58	1.97	0.444	0.00654		0.299		0.529	0.899	0.714
114	[-]	2.28	1.72	1.97	0.498	0.00654		1.04		0.493	0.846	0.669

	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
101	[-]	4.25	3.90	4.09	0.330	0.00299		0.149		0.467	0.897	0.682
105	[-]	2.91	2.69	4.09	0.213	0.00299		-3.34		0.397	0.915	0.656
111	[-]	3.91	3.60	4.09	0.297	0.00299		-0.788		0.410	0.880	0.645
112	[-]	3.53	3.25	4.09	0.268	0.00299		-1.77		0.452	0.932	0.692
113	[-]	3.49	3.21	4.09	0.263	0.00299		-1.84		0.458	0.915	0.687
114	[-]	3.47	3.21	4.09	0.245	0.00299		-1.91		0.448	0.900	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	[-]	2.46
101	[-]	3.52	3.18	2.45	0.392	0.00363		1.87		0.337	0.625	0.481
105	[-]	2.21	1.98	2.45	0.244	0.00363		-0.790		0.441	0.437	0.439
111	[-]	2.78	2.53	2.45	0.319	0.00363		0.443		0.411	0.535	0.473
112	[-]	2.72	2.48	2.45	0.312	0.00363		0.309		0.417	0.562	0.489
113	[-]	2.46	2.23	2.45	0.279	0.00363		-0.236		0.438	0.536	0.487
114	[-]	2.37	2.16	2.45	0.265	0.00363		-0.400		0.435	0.521	0.478

	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
101	[-]	2.65	2.59	3.85	0.0247	0.000605		-2.83		0.398	0.868	0.633
105	[-]	1.25	1.24	3.85	0.0197	0.000605		-6.27		0.214	0.575	0.395
111	[-]	1.89	1.86	3.85	0.0203	0.000605		-4.73		0.280	0.714	0.497
112	[-]	1.76	1.73	3.85	0.0199	0.000605		-5.06		0.268	0.682	0.475
113	[-]	1.57	1.53	3.85	0.0196	0.000605		-5.54		0.242	0.581	0.412
114	[-]	1.55	1.51	3.85	0.0197	0.000605		-5.59		0.243	0.584	0.414

	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
101	[-]	17.9	16.9	6.53	0.677			13.6		0.0534	0.837	0.445
105	[-]	17.2	16.3	6.53	0.665			12.8		0.0582	0.935	0.497
111	[-]	9.39	8.89	6.53	0.373			3.26		0.581	0.946	0.764
112	[-]	9.91	9.38	6.53	0.387			3.89		0.529	0.941	0.735
113	[-]	9.37	8.92	6.53	0.345			3.28		0.582	0.942	0.762
114	[-]	9.25	8.77	6.53	0.375			3.10		0.598	0.925	0.761

	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
101	[-]	9.39	8.98	3.43	0.403			9.22		0.182	0.881	0.532
105	[-]	8.00	7.86	3.43	0.228			7.22		0.184	0.655	0.420
111	[-]	7.13	6.84	3.43	0.230			5.61		0.347	0.721	0.534
112	[-]	6.92	6.63	3.43	0.217			5.28		0.303	0.756	0.530
113	[-]	6.56	6.29	3.43	0.192			4.70		0.312	0.718	0.515
114	[-]	6.64	6.36	3.43	0.197			4.82		0.300	0.732	0.516

	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
101	[-]	2.82	2.76	1.78	0.245	0.00901		4.04		0.441	0.619	0.530
105	[-]	1.75	1.65	1.78	0.164	0.00901		0.278		0.579	0.820	0.699
111	[-]	1.92	1.85	1.78	0.187	0.00901		0.971		0.547	0.817	0.682
112	[-]	1.94	1.89	1.78	0.184	0.00901		1.08		0.535	0.816	0.675
113	[-]	1.94	1.87	1.78	0.195	0.00901		1.07		0.516	0.802	0.659
114	[-]	1.94	1.86	1.78	0.193	0.00901		1.03		0.513	0.813	0.663

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