Data files for Koplitz et al., "The contribution of wildland emissions to deposition in the U.S.: implications for tree growth and survival in the Northwest", Environmental Research Letters, in press, 2021, doi:10.1088/1748-9326/abd26e. Created 1/3/2020 by S. Koplitz Revised 1/5/2021 by C. Nolte Note: CMAQ output files from Wilkins et al. (2018) were post-processed using R. Files: 1. deposition.csv - Comma-separated value file containing annual average nitrogen (N) and sulfur (S) deposition data from 2008-2012 CMAQ simulations. Deposition values outside the coterminous United States have been masked out (set to NA). Variables in file: - column: column index for each 12-km grid cell, ranging from 1 (west) to 459 (east) - row: row index for each 12-km grid cell, ranging from 1 (south) to 299 (north) - longitude: grid cell center; units degrees_E; negative numbers denote western hemisphere. The grid is a Lambert conformal conic projection centered at 97 degrees W and 40 degrees N, true latitudes at 33 and 45 degrees N, and using a spherical Earth of radius 6370 km as its geoid. - latitude: grid cell center; units degrees_N - td_n_fires: annual average total N deposition in simulations including wildfires; units kg N/hectare - td_n_nofires: annual average total N deposition in simulations without wildfires; units kg N/hectare - td_s_fires: annual average total S deposition in simulations including wildfires; units kg S/hectare - td_s_nofires: annual average total S deposition in simulations without wildfires; units kg S/hectare - dd_oxn: difference (with wildfires minus without wildfires) in annual average dry deposition of oxidized nitrogen, kg N/ha - dd_redn: difference (with wildfires minus without wildfires) in annual average dry deposition of reduced nitrogen, kg N/ha - wd_oxn: difference (with wildfires minus without wildfires) in annual average wet deposition of oxidized nitrogen, kg N/ha - wd_redn: difference (with wildfires minus without wildfires) in annual average wet deposition of reduced nitrogen, kg N/ha Figure 1 is constructed as follows: - td_n_fires - td_n_nofires (upper left) - td_s_fires - td_s_nofires (lower left) - (td_n_fires - td_n_nofires)/td_n_fires (upper right) - (td_s_fires - td_s_nofires)/td_s_fires (lower right) Figure 2 is straightforward: - wd_oxn (upper left) - dd_oxn (lower left) - wd_redn (upper right) - dd_redn (lower right) 2. FIA_data_full.csv Changes in survival and growth rates due to CMAQ-estimated wildland fire N increments over Pacific Northwest Each row corresponds to 1 of the 28,802 Forest Inventory and Analysis (FIA) representative trees in the dataset. Variables: - GenSpp: Tree genus and species (Latin name) - COMMON_NAME: common name of tree - TRE_CN: unique tree identifier - PLT_CN: plot identifier for that tree - LAT: latitude, degrees_N. Calculations are based on the NAD83 geodetic datum. - LON: longitude, degrees_E - Shape.s.N: shape of species survival response curve as a function of N deposition; one of "increase", "decrease", "unimodal", or blank (indicating flat) - Shape.g.N: shape of species growth response curve as a function of N deposition; one of "increase", "decrease", "unimodal", blank (indicating flat) - DIA.cm: tree diameter, cm - TPH.EXPN.ha: FIA tree expansion factor, represents number of trees of this species in the associated county that the individual FIA tree represents. More information on the FIA database is available at https://www.fia.fs.fed.us/library/database-documentation/current/ver80/FIADB%20User%20Guide%20P2_8-0.pdf. - TotDEP_ALL: annual average total N deposition, including wildland fires (kg N/ha) - TotDEP_NoFIRE: annual average total N deposition, excluding wildland fires (kg N/ha) - TotDEP_FIRE: annual average total N deposition attributable to wildland fires (kg N/ha) - Propchange.s.N(Fire): change in relative rate of species survival due to wildland fire N deposition - Propchange.g.N(Fire): change in relative rate of species growth due to wildland fire N deposition In Table 1, the numbers of sampled trees are the counts of the Shape.s.N and Shape.g.N columns, while the number of trees represented across the landscape are weighted by the TPH.EXPN.ha column. Table 2 values are the mean, min, and max of data in the Propchange.s.N(Fire) and Propchange.g.N(Fire) columns, grouped by tree species. 3. FIA_data_stats_effects.csv Changes in survival and growth rates due to CMAQ-estimated wildland fire N increments over Pacific Northwest These data derived from file above, aggregated by plot identifier (PLT_CN) Variables: - PLT_CN: FIA plot identifier - LAT: latitude, degrees_N - LON: longitude, degrees_E - N Rows: number of representative trees in this FIA plot - Sum(prop_BA at risk_s.N): proportion of tree basal area at risk for survival - Sum(prop_BA at risk_g.N): proportion of tree basal area at risk for growth For the effect columns given below, values less than 1 indicate a decrease in growth or survival and values greater than 1 indicate an increase. - Mean(Propchange.s.N.Fire): mean size of effect on species survival - Median(Propchange.s.N.Fire): median size of effect on species survival - Min(Propchange.s.N.Fire): minimum size of effect on species survival - Max(Propchange.s.N.Fire): maximum size of effect on species survival - Mean(Propchange.g.N.Fire): mean size of effect on species growth - Median(Propchange.g.N.Fire): median size of effect on species growth - Min(Propchange.g.N.Fire): minimum size of effect on species growth - Max(Propchange.g.N.Fire): maximum size of effect on species growth Figure 3 is a plot of the Median(Propchange.s.N.Fire) and Median(Propchange.g.N.Fire) columns. Figure 4 is a plot of the Sum(prop_BA at risk_s.N) and Sum(prop_BA at risk_g.N) columns. Reference Wilkins, J.L., Pouliot, G., Foley, K., Appel, W., and Pierce, T. (2018): The impact of US wildland fires on ozone and particulate matter: a comparison of measurements and CMAQ modeled predictions from 2008 to 2012. Int. J. Wildland Fire, 27, 684-698, https://doi.org/10.1071/WF18053