California Drought Outlooks Based on Climate Change Models’ Effects on Water Availability
Future streamflow in California is evaluated based on eight climate projections models and the effects on water availability. The unimpaired projected streamflow for eleven California rivers, collected from Cal-Adapt, are compared with unimpaired historical flows (1950–2015) using eight climate mode...
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| Format: | Article |
| Language: | English |
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MDPI AG
2021-11-01
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| Series: | Water |
| Subjects: | |
| Online Access: | https://www.mdpi.com/2073-4441/13/22/3211 |
| _version_ | 1797508182101196800 |
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| author | Lauren Lynam Thomas Piechota |
| author_facet | Lauren Lynam Thomas Piechota |
| author_sort | Lauren Lynam |
| collection | DOAJ |
| description | Future streamflow in California is evaluated based on eight climate projections models and the effects on water availability. The unimpaired projected streamflow for eleven California rivers, collected from Cal-Adapt, are compared with unimpaired historical flows (1950–2015) using eight climate model projections (2020–2099) identified as representative as possible future scenarios; Warm Dry RCP 4.5, Average RCP 4.5, Cool Wet RCP 4.5, Other RCP 4.5, Warm Dry RCP 8.5, Average RCP 8.5, Cool Wet RCP 8.5, and Other RCP 8.5. Projected drought deficits (or magnitudes), durations, and intensities are statistically tested against historical values to determine significance of differences between past streamflow and future streamflow. The models show significant differences between historical and projected streamflow with all three drought categories (deficit, duration, intensity), using difference in means <i>t</i>-tests. Warm Dry and Other simulations are projected to have larger droughts (2–3 times larger) than the historical record. Average and Cool Wet simulations are projected to have fewer droughts than the historical period. Results are consistent for 4.5 and 8.5 RCP scenarios that represent two different greenhouse gas emission levels. Potential impacts of such streamflow variations are discussed. |
| first_indexed | 2024-03-10T04:58:41Z |
| format | Article |
| id | doaj.art-e900849960364b3db385386356565a4b |
| institution | Directory Open Access Journal |
| issn | 2073-4441 |
| language | English |
| last_indexed | 2024-03-10T04:58:41Z |
| publishDate | 2021-11-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Water |
| spelling | doaj.art-e900849960364b3db385386356565a4b2023-11-23T02:00:04ZengMDPI AGWater2073-44412021-11-011322321110.3390/w13223211California Drought Outlooks Based on Climate Change Models’ Effects on Water AvailabilityLauren Lynam0Thomas Piechota1Schmid College of Science and Technology, Chapman University, Orange, CA 92866, USASchmid College of Science and Technology, Chapman University, Orange, CA 92866, USAFuture streamflow in California is evaluated based on eight climate projections models and the effects on water availability. The unimpaired projected streamflow for eleven California rivers, collected from Cal-Adapt, are compared with unimpaired historical flows (1950–2015) using eight climate model projections (2020–2099) identified as representative as possible future scenarios; Warm Dry RCP 4.5, Average RCP 4.5, Cool Wet RCP 4.5, Other RCP 4.5, Warm Dry RCP 8.5, Average RCP 8.5, Cool Wet RCP 8.5, and Other RCP 8.5. Projected drought deficits (or magnitudes), durations, and intensities are statistically tested against historical values to determine significance of differences between past streamflow and future streamflow. The models show significant differences between historical and projected streamflow with all three drought categories (deficit, duration, intensity), using difference in means <i>t</i>-tests. Warm Dry and Other simulations are projected to have larger droughts (2–3 times larger) than the historical record. Average and Cool Wet simulations are projected to have fewer droughts than the historical period. Results are consistent for 4.5 and 8.5 RCP scenarios that represent two different greenhouse gas emission levels. Potential impacts of such streamflow variations are discussed.https://www.mdpi.com/2073-4441/13/22/3211droughtclimatewaterhydrologystreamflow |
| spellingShingle | Lauren Lynam Thomas Piechota California Drought Outlooks Based on Climate Change Models’ Effects on Water Availability Water drought climate water hydrology streamflow |
| title | California Drought Outlooks Based on Climate Change Models’ Effects on Water Availability |
| title_full | California Drought Outlooks Based on Climate Change Models’ Effects on Water Availability |
| title_fullStr | California Drought Outlooks Based on Climate Change Models’ Effects on Water Availability |
| title_full_unstemmed | California Drought Outlooks Based on Climate Change Models’ Effects on Water Availability |
| title_short | California Drought Outlooks Based on Climate Change Models’ Effects on Water Availability |
| title_sort | california drought outlooks based on climate change models effects on water availability |
| topic | drought climate water hydrology streamflow |
| url | https://www.mdpi.com/2073-4441/13/22/3211 |
| work_keys_str_mv | AT laurenlynam californiadroughtoutlooksbasedonclimatechangemodelseffectsonwateravailability AT thomaspiechota californiadroughtoutlooksbasedonclimatechangemodelseffectsonwateravailability |