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
DeadVeg_1901-1920	[-]	2.31	2.45	3.53	0.0362	0.00901		-2.21		0.736	0.791	0.764
DeadVeg_1940-1949	[-]	2.31	2.45	3.53	0.0362	0.00901		-2.21		0.736	0.790	0.763

	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
DeadVeg_1901-1920	[-]	2.48	2.27	5.19	0.0129	0.00842		-4.42		0.394	0.200	0.297
DeadVeg_1940-1949	[-]	2.47	2.27	5.19	0.0129	0.00842		-4.42		0.394	0.202	0.298

	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
DeadVeg_1901-1920	[-]	3.19	3.00	4.46	0.199	0.00711		-1.56		0.411	0.369	0.390
DeadVeg_1940-1949	[-]	3.19	2.99	4.46	0.199	0.00711		-1.56		0.411	0.371	0.391

	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
DeadVeg_1901-1920	[-]	0.397	0.371	1.08	0.0258	0.00346		-2.29		0.542	0.0859	0.314
DeadVeg_1940-1949	[-]	0.399	0.373	1.08	0.0262	0.00346		-2.28		0.544	0.0799	0.312

	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
DeadVeg_1901-1920	[-]	2.01	1.52	2.13	0.492	0.0783		-1.05		0.867	0.940	0.903
DeadVeg_1940-1949	[-]	2.01	1.52	2.13	0.492	0.0783		-1.05		0.866	0.940	0.903

	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
DeadVeg_1901-1920	[-]	1.79	1.68	6.40	0.0485	0.00484		-5.42		0.521	0.0416	0.281
DeadVeg_1940-1949	[-]	1.79	1.69	6.40	0.0488	0.00484		-5.41		0.521	0.0413	0.281

	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
DeadVeg_1901-1920	[-]	3.82	3.65	17.4	0.169	0.00434		-7.67		0.517	0.179	0.348
DeadVeg_1940-1949	[-]	3.82	3.66	17.4	0.169	0.00434		-7.66		0.517	0.179	0.348

	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
DeadVeg_1901-1920	[-]	2.94	2.67	6.56	0.275	0.0366		-5.62		0.596	0.512	0.554
DeadVeg_1940-1949	[-]	2.94	2.66	6.56	0.275	0.0366		-5.63		0.595	0.511	0.553

	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
DeadVeg_1901-1920	[-]	0.435	0.405	1.34	0.0333	0.00149		-3.02		0.529	0.0412	0.285
DeadVeg_1940-1949	[-]	0.438	0.408	1.34	0.0340	0.00149		-3.01		0.530	0.0400	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	[-]	3.77
DeadVeg_1901-1920	[-]	2.08	1.81	3.75	0.269	0.0207		-2.33		0.578	0.339	0.459
DeadVeg_1940-1949	[-]	2.08	1.81	3.75	0.270	0.0207		-2.33		0.579	0.340	0.460

	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
DeadVeg_1901-1920	[-]	1.25	1.11	4.87	0.133	0.0261		-7.67		0.497	0.105	0.301
DeadVeg_1940-1949	[-]	1.25	1.11	4.87	0.133	0.0261		-7.66		0.497	0.103	0.300

	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
DeadVeg_1901-1920	[-]	38.7	36.0	88.0	2.66	0.278		-3.93		0.547	0.413	0.480
DeadVeg_1940-1949	[-]	38.8	36.0	88.0	2.66	0.278		-3.93		0.547	0.413	0.480

	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
DeadVeg_1901-1920	[-]	1.38	1.31	3.39	0.0923	0.0114		-1.26		0.624	0.136	0.380
DeadVeg_1940-1949	[-]	1.38	1.31	3.39	0.0922	0.0114		-1.26		0.624	0.135	0.380

	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
DeadVeg_1901-1920	[-]	0.797	0.673	3.60	0.114	0.0111		-5.42		0.508	0.0410	0.274
DeadVeg_1940-1949	[-]	0.799	0.675	3.60	0.114	0.0111		-5.41		0.509	0.0412	0.275

	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
DeadVeg_1901-1920	[-]	1.16	0.904	1.95	0.241	0.0290		-3.43		0.667	0.730	0.698
DeadVeg_1940-1949	[-]	1.16	0.904	1.95	0.241	0.0290		-3.44		0.666	0.730	0.698

	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
DeadVeg_1901-1920	[-]	1.41	1.29	4.06	0.0787	0.00206		-7.36		0.526	0.276	0.401
DeadVeg_1940-1949	[-]	1.42	1.29	4.06	0.0787	0.00206		-7.35		0.527	0.274	0.400

	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
DeadVeg_1901-1920	[-]	1.10	1.01	2.49	0.0954	0.00374		-3.07		0.612	0.0294	0.321
DeadVeg_1940-1949	[-]	1.11	1.02	2.49	0.0958	0.00374		-3.06		0.610	0.0291	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	[-]	3.85
DeadVeg_1901-1920	[-]	0.804	0.844	3.81	0.00513	0.00396		-7.46		0.489	0.0702	0.280
DeadVeg_1940-1949	[-]	0.807	0.848	3.81	0.00512	0.00396		-7.46		0.490	0.0707	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	[-]	6.52
DeadVeg_1901-1920	[-]	5.70	5.49	6.58	0.186	0.000106		-1.27		0.712	0.361	0.537
DeadVeg_1940-1949	[-]	5.70	5.49	6.58	0.186	0.000106		-1.27		0.712	0.362	0.537

	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
DeadVeg_1901-1920	[-]	3.03	2.96	3.42	0.103	0.00578		-0.653		0.292	0.119	0.206
DeadVeg_1940-1949	[-]	3.03	2.96	3.42	0.103	0.00578		-0.655		0.292	0.119	0.206

	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
DeadVeg_1901-1920	[-]	0.628	0.600	1.74	0.0370	0.0104		-3.53		0.569	0.326	0.448
DeadVeg_1940-1949	[-]	0.628	0.600	1.74	0.0370	0.0104		-3.53		0.569	0.326	0.448

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