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| Titel |
Effects of snow ratio on annual runoff within the Budyko framework |
| VerfasserIn |
D. Zhang, Z. Cong, G. Ni, D. Yang, S. Hu |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
1027-5606
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| Digitales Dokument |
URL |
| Erschienen |
In: Hydrology and Earth System Sciences ; 19, no. 4 ; Nr. 19, no. 4 (2015-04-24), S.1977-1992 |
| Datensatznummer |
250120694
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| Publikation (Nr.) |
 copernicus.org/hess-19-1977-2015.pdf |
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| Zusammenfassung |
| A warmer climate may lead to less precipitation falling as snow in cold
seasons. Such a switch in the state of precipitation not only alters temporal
distribution of intra-annual runoff but also tends to yield less total
annual runoff. Long-term water balance for 282 catchments across China is
investigated, showing that a decreasing snow ratio reduces annual runoff for a
given total precipitation. Within the Budyko framework, we develop an
equation to quantify the relationship between snow ratio and annual runoff
from a water–energy balance viewpoint. Based on the proposed equation,
attribution of runoff change during the past several decades and possible runoff
change induced by projected snow ratio change using climate experiment
outputs archived in the Coupled Model Intercomparison Project Phase 5 (CMIP5) are
analyzed. Results indicate that annual runoff in northwestern mountainous
and northern high-latitude areas are sensitive to snow ratio change. The
proposed model is applicable to other catchments easily and quantitatively
for analyzing the effects of possible change in snow ratio on available
water resources and evaluating the vulnerability of catchments to climate change. |
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