Impact of antecedent soil moisture on runoff from a semiarid catchment

Schoener, Gerhard; Stone, Mark C.

doi:10.1016/j.jhydrol.2018.12.025

Cited by 46 publications

(17 citation statements)

References 37 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The runoff generated from the relatively low intensity rainfall on July 8 th was probably facilitated by the high antecedent precipitation in the days prior to this storm. Wet antecedent conditions such as these contributed to substantially higher runoff in an unburned semiarid catchment (2.8 km 2 ) in New Mexico (Schoener & Stone, 2019) and reduced rainfall thresholds for the generation of streamflow during post‐fire years 2–4 of the High Park fire (Wilson et al, 2018). Streamflow was more strongly correlated to watershed slope than to precipitation metrics for this event (Table 4), suggesting that runoff generation was localised in steeper parts of the watersheds.…”

Section: Discussionmentioning

confidence: 99%

“…in New Mexico (Schoener & Stone, 2019) and reduced rainfall thresholds for the generation of streamflow during post-fire years 2-4 of the High Park fire (Wilson et al, 2018). Streamflow was more strongly correlated to watershed slope than to precipitation metrics for this event (Table 4), suggesting that runoff generation was localised in steeper parts of the watersheds.…”

Section: Event Magnitudes and Channel Responses With Comparisons Tomentioning

confidence: 99%

See 1 more Smart Citation

Connectivity of post‐fire runoff and sediment from nested hillslopes and watersheds

Wilson

Kampf

Ryan

et al. 2020

Hydrological Processes

View full text Add to dashboard Cite

Wildfire increases the potential connectivity of runoff and sediment throughout watersheds due to greater bare soil, runoff and erosion as compared to pre‐fire conditions. This research examines the connectivity of post‐fire runoff and sediment from hillslopes (<1.5 ha; n = 31) and catchments (<1000 ha; n = 10) within two watersheds (<1500 ha) burned by the 2012 High Park Fire in northcentral Colorado, USA. Our objectives were to: (1) identify sources and quantify magnitudes of post‐fire runoff and erosion at nested hillslopes and watersheds for two rain storms with varied duration, intensity and antecedent precipitation; and (2) assess the factors affecting the magnitude and connectivity of runoff and sediment across spatial scales for these two rain storms. The two summer storms that are the focus of this research occurred during the third summer after burning. The first storm had low intensity rainfall over 11 hours (return interval <1–2 years), whereas the second event had high intensity rainfall over 1 hour (return interval <1–10 years). The lower intensity storm was preceded by high antecedent rainfall and led to low hillslope sediment yields and channel incision at most locations, whereas the high intensity storm led to infiltration‐excess overland flow, high sediment yields, in‐stream sediment deposition and channel substrate fining. For both storms, hillslope‐to‐stream sediment delivery ratios and area‐normalised cross‐sectional channel change increased with the percent of catchment that burned at high severity. For the high intensity storm, hillslope‐to‐stream sediment delivery ratios decreased with unconfined channel length (%). The findings quantify post‐fire connectivity and sediment delivery from hillslopes and streams, and highlight how different types of storms can cause varying magnitues and spatial patterns of sediment transport and deposition from hillslopes through stream channel networks.

show abstract

Section: Discussionmentioning

confidence: 99%

Section: Event Magnitudes and Channel Responses With Comparisons Tomentioning

confidence: 99%

Connectivity of post‐fire runoff and sediment from nested hillslopes and watersheds

Wilson

Kampf

Ryan

et al. 2020

Hydrological Processes

View full text Add to dashboard Cite

show abstract

“…For both Impacts, soil moisture (minimums or maximums for low flows or flooding, respectively) had the strongest response among the indicators, illustrating the importance of soil moisture on these extremes. The effect of antecedent soil moisture on flooding is well documented in studies of historical events, forecasting, and climate change [83][84][85]. Although studies on low flows appear less common, Castillo, et al [86] suggest that antecedent soil moisture is an important control on runoff, particularly during medium-and low-intensity storms, which are common in semi-arid locations such as the Lower CRB.…”

Section: Discussionmentioning

confidence: 99%

Concurrent Changes in Extreme Hydroclimate Events in the Colorado River Basin

Bennett

Talsma

Boero

2021

Water

View full text Add to dashboard Cite

Extreme events resulting in catastrophic damage have more than doubled in the last five years, costing hundreds of lives and thousands of homes, and heavily undermining regional economic stability. At present, most of these hydroclimatic extreme events are documented by the media as individual events; however, in scientific terms, many are better understood as concurrent events—concurrent extremes of both temperature and precipitation (e.g., drought, floods). This paper considers concurrent changes in hydroclimate extremes, including heatwaves, drought, flooding, and low flows, in six historical-to-future (1970–1999, 2070–2099) Earth System Model (ESM) climate scenarios for the Colorado River basin. Results indicate that temperature-driven Impacts (heatwaves, drought) have the strongest responses while precipitation-drive Impacts have weaker responses. All Impacts exhibit an increase in magnitude from synoptic to annual time scales, with heatwaves increasing in strength about three times at the annual time scale versus the synoptic, while low flows only increase slightly. Critical watersheds in the Colorado were identified, highlighting the Blue River basin, Uncompadre, East Taylor, Salt/Verde watersheds, locations of important water infrastructures, water resources, and hydrological research. Our results indicate that concurrent extreme hydroclimate events are projected to increase in the future and intensify within critical regions of the Colorado River basin. Considering extreme hydroclimate events concurrently is an important step towards linking economic and social effects of these events and their associated instabilities on a regional scale.

show abstract

“…Zhao et al [66] discuss supplementing relative soil moisture estimates with the API. Recent studies suggest using the API directly or in conjunction with geostatistical methods to derive soil moisture estimates [67][68][69]. The API algorithm used in this study expands upon the work of Pellarin et al [70] who in recent studies used the API in an assimilation scheme to provide a near-realtime precipitation product [71].…”

Section: Introductionmentioning

confidence: 96%

RADOLAN_API: An Hourly Soil Moisture Data Set Based on Weather Radar, Soil Properties and Reanalysis Temperature Data

et al. 2021

View full text Add to dashboard Cite

Soil moisture is a key variable in the terrestrial water and energy system. This study presents an hourly index that provides soil moisture estimates on a high spatial and temporal resolution (1 km × 1 km). The long established Antecedent Precipitation Index (API) is extended with soil characteristic and temperature dependent loss functions. The Soilgrids and ERA5 data sets are used to provide the controlling variables. Precipitation as main driver is provided by the German weather radar data set RADOLAN. Empiric variables in the equations are fitted in a optimization effort using 23 in-situ soil moisture measurement stations from the Terrestial Environmental Observatories (TERENO) and a separately conducted field campaign. The volumetric soil moisture estimation results show error values of 3.45 Vol% mean ubRMSD between RADOLAN_API and station data with a high temporal accordance especially of soil moisture upsurge. Further potential of the improved API algorithm is shown with a per-station calibration of applied empirical variables. In addition, the RADOLAN_API data set was spatially compared to the ESA CCI soil moisture product where it altogether demonstrates good agreement. The resulting data set is provided as open access data.

show abstract

Impact of antecedent soil moisture on runoff from a semiarid catchment

Cited by 46 publications

References 37 publications

Connectivity of post‐fire runoff and sediment from nested hillslopes and watersheds

Connectivity of post‐fire runoff and sediment from nested hillslopes and watersheds

Concurrent Changes in Extreme Hydroclimate Events in the Colorado River Basin

RADOLAN_API: An Hourly Soil Moisture Data Set Based on Weather Radar, Soil Properties and Reanalysis Temperature Data

Contact Info

Product

Resources

About