Derivation of Soil Moisture Recovery Relation Using Soil Conservation Service (SCS) Curve Number Method

Kim, Jungho; Johnson, Lynn; Cifelli, Rob; Choi, Jeongho; Chandrasekar, V.

doi:10.3390/w10070833

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Derivation of Soil Moisture Recovery Relation Using Soil Conservation Service (SCS) Curve Number Method

2018
By Kim, Jungho ; Johnson, Lynn ; Cifelli, Rob ; ...
Source: Water, 10(7), 21.

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Journal Title:

Water
Personal Author:

Kim, Jungho ; Johnson, Lynn ; Cifelli, Rob ; Choi, Jeongho ; Chandrasekar, V.

Kim, Jungho ; Johnson, Lynn ; Cifelli, Rob ; Choi, Jeongho ; Chandrasekar, V. Less -
NOAA Program & Office:

OAR (Oceanic and Atmospheric Research) ; PSL (Physical Sciences Laboratory) ; ESRL (Earth System Research Laboratory) ; CIRA (Cooperative Institute for Research in the Atmosphere)

OAR (Oceanic and Atmospheric Research) ; PSL (Physical Sciences Laboratory) ; ESRL (Earth System Research Laboratory) ; CIRA (Cooperative Institute for Research in the Atmosphere) Less -
Description:

Soil moisture retention (SMR) capacity plays a key role in estimating the direct runoff when a multi-pulse storm event occurs. It is very important to know how much SMR will be recovered during the intervals of no rain of a multi-pulse storm. This study developed a new approach for derivation of the SMR recovery curve (R-curve) at sub-daily time-scales using the Curve Number (CN) method. The methodology was applied using complex storm events in the Napa River basin, California. The R-curve is classified into three sections depending on the recovery rate of SMR during the inter-storm interval of no rain (INR), and this study defines the characteristics. The first section of the R-curve (INR 0-21 h with 0.97 mm/h) is described as gradually recovering SMR, since water is being infiltrated and the upper soil layer is not fully saturated. The second section (INR 21-36 h with 2.11 mm/h) is defined as steeply recovering S due to downward drainage (sub-surface/inter flows) and evaporation without infiltration. The third section (INR 36-68 h with 0.34 mm/h) is described as gradually decreasing recovery dependent on evaporation since percolation and drainage have almost stopped.
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Water, 10(7), 21.
DOI:

https://doi.org/10.3390/w10070833
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Journal Article
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urn:sha256:12ab32226ab137f078e45618172cbc50b3ac5002e01949c3614cda323bc0a647
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Derivation of Soil Moisture Recovery Relation Using Soil Conservation Service (SCS) Curve Number Method

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