Accompanying Data to Hampton & Basu (2022) "A novel Budyko-based approach to quantify post-forest-fire streamflow response and recovery timescales"


Authors:
Owners: Tyler B Hampton
Type: Resource
Storage: The size of this resource is 41.2 MB
Created: Aug 08, 2019 at 4:14 p.m.
Last updated: Mar 19, 2022 at 5:56 p.m. (Metadata update)
Published date: Mar 19, 2022 at 5:56 p.m.
DOI: 10.4211/hs.43280a7de6ef48b4b800ab5c12ae58cb
Citation: See how to cite this resource
Sharing Status: Published
Views: 1209
Downloads: 24
+1 Votes: Be the first one to 
 this.
Comments: No comments (yet)

Abstract

Recent increases in the incidences of wildfires have necessitated the development of methodologies to quantify the effect of these fires on streamflows. Climate variability has been cited as a major challenge in revealing the true contribution of disturbance to streamflow changes. To address this, we developed an annual Budyko “decomposition” method for (1) statistical change detection of hydrologic signatures post-fire, (2) separating climate-driven and fire-driven changes in streamflow, and (3) estimating hydrologic recovery timescales after fire. We demonstrate the use of this methodology for 17 watersheds in Southern California with high interannual variability in precipitation. We show that while traditional metrics like changes in flow or runoff ratio might not detect a disturbance effect due to confounding climate signals, the Budyko framework can be used successfully for statistical change detection. The Budyko approach was also found to be robust in detecting changes in 5 highly burned catchments (>40% burned area ratio), while changes in less burned (2) and unburned catchments (10) were insignificant. We further used the Budyko approach to quantify the contribution of fire-driven versus climate driven changes in streamflow and found that fire contributed to an average increase in streamflow on the order of 80 mm yr-1, though the effect varied greatly between years. Finally, we estimated hydrologic recovery timescales that varied between 5 to 45 years for four burned catchments. We found a significant linear relationship between recovery time and burned area at medium and high severity for our study catchments, with about 4 years of recovery time per 10% of the watershed burned.

Coverage

Spatial

Coordinate System/Geographic Projection:
WGS 84 EPSG:4326
Coordinate Units:
Decimal degrees
Place/Area Name:
Los Angeles
North Latitude
35.0085°
East Longitude
-116.1486°
South Latitude
33.2260°
West Longitude
-120.5321°

Temporal

Start Date: 01/01/1994
End Date: 12/31/2008
Leaflet Map data © OpenStreetMap contributors

Content

    No files to display.

How to Cite

Hampton, T. B., N. B. Basu (2022). Accompanying Data to Hampton & Basu (2022) "A novel Budyko-based approach to quantify post-forest-fire streamflow response and recovery timescales", HydroShare, https://doi.org/10.4211/hs.43280a7de6ef48b4b800ab5c12ae58cb

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

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

Comments

There are currently no comments

New Comment

required