Distinct Impacts of Land Use and Land Management on Summer Temperatures
Land use has been recognized as an important anthropogenic forcing of climate change in recent studies. However, climatic effects of land management practices have been little discussed and compared to land-use impacts. As land-atmosphere interactions via surface fluxes are particularly strong durin...
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| Format: | Article |
| Language: | English |
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Frontiers Media S.A.
2020-06-01
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| Series: | Frontiers in Earth Science |
| Subjects: | |
| Online Access: | https://www.frontiersin.org/article/10.3389/feart.2020.00245/full |
| _version_ | 1811293206443196416 |
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| author | Liang Chen Liang Chen Paul A. Dirmeyer |
| author_facet | Liang Chen Liang Chen Paul A. Dirmeyer |
| author_sort | Liang Chen |
| collection | DOAJ |
| description | Land use has been recognized as an important anthropogenic forcing of climate change in recent studies. However, climatic effects of land management practices have been little discussed and compared to land-use impacts. As land-atmosphere interactions via surface fluxes are particularly strong during the warm season, we investigate the impacts of historical land use and present irrigation practices on summer temperatures in the Northern Hemisphere using the most recent version of Community Earth System Model. Our results suggest that historical land use leads to an overall cooling in the middle latitudes and a warming in the tropics, and the sign and magnitude of the changes in temperature depend on the type of land cover change. On the other hand, summer irrigation leads to a significant cooling over many irrigated areas due to enhanced evapotranspiration, and the local cooling is comparable to and even stronger than the land-use effects. Both land use and irrigation can also significantly influence the intensity and frequency of hot extremes. Land use shows stronger impacts during the night through ground heat flux feedback, while irrigation shows stronger impacts during the day through latent heat flux feedback. Our comparison demonstrates the importance of irrigation in local and regional climate, highlighting the necessity of considering such land management practices in future assessments of regional climate change and climate mitigation. |
| first_indexed | 2024-04-13T04:58:07Z |
| format | Article |
| id | doaj.art-6e5ece55437d42f19458ee3a13e06c11 |
| institution | Directory Open Access Journal |
| issn | 2296-6463 |
| language | English |
| last_indexed | 2024-04-13T04:58:07Z |
| publishDate | 2020-06-01 |
| publisher | Frontiers Media S.A. |
| record_format | Article |
| series | Frontiers in Earth Science |
| spelling | doaj.art-6e5ece55437d42f19458ee3a13e06c112022-12-22T03:01:26ZengFrontiers Media S.A.Frontiers in Earth Science2296-64632020-06-01810.3389/feart.2020.00245540722Distinct Impacts of Land Use and Land Management on Summer TemperaturesLiang Chen0Liang Chen1Paul A. Dirmeyer2Climate and Atmospheric Sciences Section, Illinois State Water Survey, Prairie Research Institute, University of Illinois at Urbana-Champaign, Champaign, IL, United StatesCenter for Ocean-Land-Atmosphere Studies, George Mason University, Fairfax, VA, United StatesCenter for Ocean-Land-Atmosphere Studies, George Mason University, Fairfax, VA, United StatesLand use has been recognized as an important anthropogenic forcing of climate change in recent studies. However, climatic effects of land management practices have been little discussed and compared to land-use impacts. As land-atmosphere interactions via surface fluxes are particularly strong during the warm season, we investigate the impacts of historical land use and present irrigation practices on summer temperatures in the Northern Hemisphere using the most recent version of Community Earth System Model. Our results suggest that historical land use leads to an overall cooling in the middle latitudes and a warming in the tropics, and the sign and magnitude of the changes in temperature depend on the type of land cover change. On the other hand, summer irrigation leads to a significant cooling over many irrigated areas due to enhanced evapotranspiration, and the local cooling is comparable to and even stronger than the land-use effects. Both land use and irrigation can also significantly influence the intensity and frequency of hot extremes. Land use shows stronger impacts during the night through ground heat flux feedback, while irrigation shows stronger impacts during the day through latent heat flux feedback. Our comparison demonstrates the importance of irrigation in local and regional climate, highlighting the necessity of considering such land management practices in future assessments of regional climate change and climate mitigation.https://www.frontiersin.org/article/10.3389/feart.2020.00245/fullland use – land cover changeclimate modelingland-atmosphere interactionirrigationCESM2 |
| spellingShingle | Liang Chen Liang Chen Paul A. Dirmeyer Distinct Impacts of Land Use and Land Management on Summer Temperatures Frontiers in Earth Science land use – land cover change climate modeling land-atmosphere interaction irrigation CESM2 |
| title | Distinct Impacts of Land Use and Land Management on Summer Temperatures |
| title_full | Distinct Impacts of Land Use and Land Management on Summer Temperatures |
| title_fullStr | Distinct Impacts of Land Use and Land Management on Summer Temperatures |
| title_full_unstemmed | Distinct Impacts of Land Use and Land Management on Summer Temperatures |
| title_short | Distinct Impacts of Land Use and Land Management on Summer Temperatures |
| title_sort | distinct impacts of land use and land management on summer temperatures |
| topic | land use – land cover change climate modeling land-atmosphere interaction irrigation CESM2 |
| url | https://www.frontiersin.org/article/10.3389/feart.2020.00245/full |
| work_keys_str_mv | AT liangchen distinctimpactsoflanduseandlandmanagementonsummertemperatures AT liangchen distinctimpactsoflanduseandlandmanagementonsummertemperatures AT pauladirmeyer distinctimpactsoflanduseandlandmanagementonsummertemperatures |