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

Details

• Journal Title:
  Water
• Personal Author:
  Kim, Jungho ; Johnson, Lynn ; Cifelli, Rob ; Choi, Jeongho ; Chandrasekar, V.
• 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)
• 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.
• Source:
  Water, 10(7), 21.
• DOI:
  https://doi.org/10.3390/w10070833
• Document Type:
  Journal Article
• Rights Information:
  CC BY
• Compliance:
  Submitted
• Main Document Checksum:
  urn:sha256:12ab32226ab137f078e45618172cbc50b3ac5002e01949c3614cda323bc0a647
• Download URL:
  https://repository.library.noaa.gov/view/noaa/21666/noaa_21666_DS1.pdf
• File Type:
  [PDF - 7.02 MB ]