Checking for non-preferred file/folder path names (may take a long time depending on the number of files/folders) ...

Dataset for seasonal and climatic drivers of wet deposition organic matter at the continental scale


Authors:
Owners: This resource does not have an owner who is an active HydroShare user. Contact CUAHSI (help@cuahsi.org) for information on this resource.
Type: Resource
Storage: The size of this resource is 947.9 KB
Created: Feb 02, 2024 at 4:01 p.m.
Last updated: Feb 02, 2024 at 4:10 p.m.
Citation: See how to cite this resource
Sharing Status: Public
Views: 128
Downloads: 3
+1 Votes: Be the first one to 
 this.
Comments: No comments (yet)

Abstract

Dissolved organic matter (DOM) concentrations and composition within wet deposition are rarely monitored despite contributing a large input of bioavailable dissolved organic carbon (DOC) and nitrogen (DON) to the earth’s surface. Lacking from the literature are spatially comprehensive assessments of simultaneous measurements of wet deposition DOC and DON chemistry and their dependencies on metrics of climate and environmental factors. Here, we use archived precipitation samples from the US National Atmospheric Deposition Program collected in 2017–2018 from 17 sites across ecoregions of the United States to investigate variability in the concentration and composition of depositional DOM. We hypothesize metrics of DOM chemistry vary with season, ecoregion, large-scale climate drivers, and precipitation geographic source. Findings indicate differences in DOC and DON concentrations among ecoregions with highest concentrations in the Northern Forests and lowest concentrations in Marine West Coast Forests. Summer and autumn samples contained the highest DOC concentrations and DON concentrations that were consistently above detection limit. DOC: DON ratios exhibit lower values on the west coast and higher ratios toward the east coast. Compositional trends suggest lighter DOM molecules in autumn and winter and heavier molecules in spring and summer. Climate drivers explain 62% of variation in DOM chemistry, revealing distinct influences on the concentrations of DOC versus DON. This study highlights the necessity of incorporating DOC and DON measurements into national deposition monitoring networks, and offers insights into the influence of climate change on wet deposition DOM.

Subject Keywords

Coverage

Temporal

Start Date:
End Date:

Content

How to Cite

Murray, D., A. Wymore (2024). Dataset for seasonal and climatic drivers of wet deposition organic matter at the continental scale, HydroShare, http://www.hydroshare.org/resource/f1fc42978b4f4b64a90f198235d762e3

This resource is shared under the Creative Commons Attribution CC BY.

http://creativecommons.org/licenses/by/4.0/
CC-BY

Comments

There are currently no comments

New Comment

required