This readme file describes the dataset: "Data from "Anthropogenic Perturbations to the Atmospheric Molybdenum Cycle", and contains the model output files from the related paper (see citation below).

This dataset is shared under a Creative Commons Universal Public Domain Dedication (CC0 1.0, https://creativecommons.org/publicdomain/zero/1.0/). The data is openly available for re-use, modification and distribution. Proper attribution to the original data creators is appreciated.

Recommended Dataset Citation: Wong, Michelle Y.; Rathod, Sagar D.; Howarth, Robert W.; Marino, Roxanne; Alastuey, Andres; Artaxo, Paulo; Barraza, Francisco; Beddow, D.C.S.; Bond, Tami; Chellam, Shankar; Chen, Yu-Cheng; Chen, Ying; Chien, Chia-Te; Cohen, David D.; Connelly, David; Dongarra, Gaetano; Gomez, Dario; Hand, Jenny; Harrison, R.M.; Hopke, Philip; Hueglin, Christoph; Husain, Liaquat; Kuang, Yuan-wen; Lambert, Fabrice; Liang, James; Li, Longleino; Losno, Remi; Maenhaut, Willy; Milando, Chad; Monteiro, Maria Inês Couto; Morera Gómez, Yasser; Paytan, Adina; Prospero, Joesph S.; Querol, Xavier; Rodriguez, Sergio; Smichowski, Patricia; Varrica, Daniela; Xiao, Yi-hua; Xu, Yangjunjie; Mahowald, Natalie M. (2021) Data from: Anthropogenic Perturbations to the Atmospheric Molybdenum Cycle [Dataset]. Cornell University Library eCommons Repository. https://doi.org/10.7298/nzhv-4579.

Related Publication: Wong, Michelle Y.; Rathod, Sagar D.; Howarth, Robert W.; Marino, Roxanne; Alastuey, Andres; Artaxo, Paulo; Barraza, Francisco; Beddow, D.C.S.; Bond, Tami; Chellam, Shankar; Chen, Yu-Cheng; Chen, Ying; Chien, Chia-Te; Cohen, David D.; Connelly, David; Dongarra, Gaetano; Gomez, Dario; Hand, Jenny; Harrison, R.M.; Hopke, Philip; Hueglin, Christoph; Husain, Liaquat; Kuang, Yuan-wen; Lambert, Fabrice; Liang, James; Li, Longleino; Losno, Remi; Maenhaut, Willy; Milando, Chad; Monteiro, Maria Inês Couto; Morera Gómez, Yasser; Paytan, Adina; Prospero, Joesph S.; Querol, Xavier; Rodriguez, Sergio; Smichowski, Patricia; Varrica, Daniela; Xiao, Yi-hua; Xu, Yangjunjie; Mahowald, Natalie M. (2021) Anthropogenic Perturbations to the Atmospheric Molybdenum Cycle. Global Biogeochemical Cycles. 35, e2020GB006787. https://doi.org/10.1029/2020GB006787.

Contact information:
Natalie Mahowald, mahowald@cornell.edu
Michelle Wong, wongm@caryinstitute.org

Data and File Overview

File list:
Mo.model.base.nc
Mo.model.high.nc
Mo.model.natural.nc
Mo.soils.nc

Relationship between files:
Mo.model.*.nc represent each of the 3 cases in the paper:
'Base' or best estimate of the Mo emissions, concentrations and deposition.
'High' is the high estimate of the anthropogenic Mo emissions, concentration and deposition.
'Natural' includes only natural sources

Mo.soils.nc is a separate file with two estimates of the soil Mo distribution: one using soil types and the median value of the soil Mo in the compilation (Mo_med) and one using spatial interpolation (Mo_int).   This file also contains the turnover time due to atmospheric deposition. (Turnover time=amount of Mo in soils/deposition flux of Mo)


Methodological information

Description of methods is given in the paper: Wong et al., 2021


Data specific information

3 model cases are described and presented in that paper, and included here:
base, anthropogenic high (high) and natural
Mo.model.base.nc  Mo.model.high.nc  Mo.model.natural.nc

In each file are the following variables:
dimensions:
	time = 12 ;
	lat = 192 ;
	lon = 288 ;
variables:
	double coarseconcmonth(time, lat, lon) ;
		coarseconcmonth:Units = "kg/kg" ;
		coarseconcmonth:long_name = "Surface concentration coarse monthly mean" ;
	double conc(lat, lon) ;
		conc:Units = "kg/kg" ;
		conc:long_name = "Surface concentration PM10 annual mean" ;
	double concmonth(time, lat, lon) ;
		concmonth:Units = "kg/kg" ;
		concmonth:long_name = "Surface concentration PM10 monthly mean" ;
	double dep(lat, lon) ;
		dep:Units = "kg/m2/s" ;
		dep:long_name = "Deposition of Mo annual mean" ;
	double fineconcmonth(time, lat, lon) ;
		fineconcmonth:Units = "kg/kg" ;
		fineconcmonth:long_name = "Surface concentration PM2.5 monthly mean" ;
	double gw(lat) ;
		gw:Units = "unitless" ;
		gw:long_name = "Gaussian weights for area weighting since grid is equal degree" ;
	double lat(lat) ;
		lat:Units = "degrees N" ;
		lat:long_name = "Latitude" ;
	double lon(lon) ;
		lon:Units = "degrees E" ;
		lon:long_name = "Longitude" ;
	double source(lat, lon) ;
		source:Units = "kg/m2/s" ;
		source:long_name = "Source of Mo annual mean" ;
	double time(time) ;
		time:Units = "month" ;
		time:long_name = "Month of the year, 1 to 12" ;


In addition, there are two soil Mo gridded datasets discussed.  Those are also included here.
Mo.soil.nc
	lat = 192 ;
	lon = 288 ;
variables:
	double Mo_int(lat, lon) ;
		Mo_int:Units = "mg/kg" ;
		Mo_int:long_name = "Mo conc in soils using kriging interpolation" ;
	double Mo_med(lat, lon) ;
		Mo_med:Units = "mg/kg" ;
		Mo_med:long_name = "Mo conc in soils using soil type and Median value of Mo" ;
	double Moturn_int(lat, lon) ;
		Moturn_int:Units = "kyear" ;
		Moturn_int:long_name = "Mo turnover time from atmospheric deposition using interpolatino" ;
	double Moturn_med(lat, lon) ;
		Moturn_med:Units = "kyear" ;
		Moturn_med:long_name = "Mo turnover time from atmospheric deposition using soil type and median Mo value" ;
	double lat(lat) ;
	double lon(lon) ;