Restoring and preserving the world’s forests are promising natural pathways to mitigate some aspects of climate change. In addition to regulating atmospheric carbon dioxide concentrations, forests modify surface and near-surface air temperatures through biophysical processes. In the eastern United States (EUS), widespread reforestation during the 20th century coincided with an anomalous lack of warming, raising questions about reforestation’s contribution to local cooling and climate mitigation. Using new cross-scale approaches and multiple independent sources of data, we uncovered links between reforestation and the response of both surface and air temperature in the EUS. Ground- and satellite-based observations showed that EUS forests cool the land surface by 1–2°C annually compared to nearby grasslands and croplands, with the strongest cooling effect during midday in the growing season, when cooling is 2–5°C. Young forests (20–40 years) have the strongest cooling effect on surface temperature. Surface cooling extends to the near-surface air, with forests reducing midday air temperature by up to 1°C compared to nearby non-forests. Analyses of historical land cover and air temperature trends showed that the cooling benefits of reforestation extend across the landscape. Locations surrounded by reforestation were up to 1°C cooler than neighboring locations that did not undergo land cover change, and areas dominated by regrowing forests were associated with cooling temperature trends in much of the EUS. Our work indicates reforestation contributed to the historically slow pace of warming in the EUS, underscoring reforestation’s potential as a local climate adaptation strategy in temperate regions.
Various hypotheses have been proposed to explain the observed lack of 20th-century warming in the eastern United States (e.g., Meehl et al., 2012; Z. Pan et al., 2004; Partridge et al., 2018; Tosca et al., 2017). The work here does not identify widespread reforestation as the sole factor causing the EUS warming hole or its trend, but multiple independent data sources suggest it can be an important contributor to this lack of historic regional warming. Beyond that, the study provides robust evidence of local biophysical climate benefits of reforestation in the EUS. The strong and persistent increase in forest cover throughout the region in the 20th century contributed to cooling, which is consistent with observed temperature changes. In addition, the findings demonstrate that reforestation has a consistent cooling effect on both surface and air temperatures, especially during midsummer periods when high temperatures can be most harmful. These findings emphasize the potential for reforestation to provide local climate adaptation benefits in temperate regions such as the EUS, highlighting the importance of biophysical co-benefits of nature-based climate solutions.
But don’t take our word for it, please read:
A Century of Reforestation Reduced Anthropogenic Warming in the Eastern United States written by Mallory L. Barnes, Quan Zhang, Scott M. Robeson, Lily Young, Elizabeth A. Burakowski, A. Christopher. Oishi, Paul C. Stoy, Gaby Katul, Kimberly A. Novick and published in the American Geophysical Union AGU Advancing Earth and Space Sciences Journal by John Wiley and Sons Inc.
This scientific article was reviewed by The Guardian;
Very cool: trees stalling effects of global heating in eastern US, study finds Vast reforestation a major reason for ‘warming hole’ across parts of US where temperatures have flatlined or cooled. Written by Oliver Milman Feb 17, 2024.
For directions as to how to drive to “George Genereux” Urban Regional Park
For directions on how to drive to Richard St. Barbe Baker Afforestation Area
For more information:
Blairmore Sector Plan Report; planning for the Richard St. Barbe Baker Afforestation Area, George Genereux Urban Regional Park and West Swale and areas around them inside of Saskatoon city limits
NEW P4G District Official Community Plan
Richard St. Barbe Baker Afforestation Area is located in Saskatoon, Saskatchewan, Canada north of Cedar Villa Road, within city limits, in the furthest south west area of the city. 52° 06′ 106° 45′
Addresses:
Part SE 23-36-6 – Afforestation Area – 241 Township Road 362-A
Part SE 23-36-6 – SW Off-Leash Recreation Area (Richard St. Barbe Baker Afforestation Area ) – 355 Township Road 362-A
S ½ 22-36-6 Richard St. Barbe Baker Afforestation Area (West of SW OLRA) – 467 Township Road 362-A
NE 21-36-6 “George Genereux” Afforestation Area – 133 Range Road 3063
Wikimapia Map: type in Richard St. Barbe Baker Afforestation Area
Google Maps South WFor more information:
Blairmore Sector Plan Report; planning for the Richard St. Barbe Baker Afforestation Area, George Genereux Urban Regional Park and West Swale and areas around them inside of Saskatoon city limits
NEW P4G District Official Community Plan
Richard St. Barbe Baker Afforestation Area is located in Saskatoon, Saskatchewan, Canada north of Cedar Villa Road, within city limits, in the furthest south west area of the city. 52° 06′ 106° 45′
Addresses:
Part SE 23-36-6 – Afforestation Area – 241 Township Road 362-A
Part SE 23-36-6 – SW Off-Leash Recreation Area (Richard St. Barbe Baker Afforestation Area ) – 355 Township Road 362-A
S ½ 22-36-6 Richard St. Barbe Baker Afforestation Area (West of SW OLRA) – 467 Township Road 362-A
NE 21-36-6 “George Genereux” Afforestation Area – 133 Range Road 3063
Wikimapia Map: type in Richard St. Barbe Baker Afforestation Area
Google Maps South West Off Leash area location pin at parking lot
Web page: https://stbarbebaker.wordpress.com
Where is the Richard St. Barbe Baker Afforestation Area? with map
Where is the George Genereux Urban Regional Park (Afforestation Area)?with map
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Facebook group page : Users of the St Barbe Baker Afforestation Area
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Please help protect / enhance your afforestation areas, please contact the Friends of the Saskatoon Afforestation Areas Inc. (e-mail / e-transfers )Support the afforestation areas with your donation or membership ($20.00/year). Please donate by paypal or by using e-transfers Please and thank you! Your donation and membership is greatly appreciated. Members e-mail your contact information to be kept up to date!
Donations can be made through Paypal, Canada Helps, Contact Donate A Car Canada, SARCAN Drop & Go 106100594 for the Friends of the Saskatoon Afforestation Areas Inc.
United Nations Decade on Ecosystem Restoration
Use the UN Decade’s Visual Identity
Make it your own
Spread the word about the UN Decade
Let’s Bring Back Forests
Let’s Green Our Cities
“Be like a tree in pursuit of your cause. Stand firm, grip hard, thrust upward. Bend to the winds of heaven..”
Richard St. Barbe Baker!For more information:
Blairmore Sector Plan Report; planning for the Richard St. Barbe Baker Afforestation Area, George Genereux Urban Regional Park and West Swale and areas around them inside of Saskatoon city limits
NEW P4G District Official Community Plan
Richard St. Barbe Baker Afforestation Area is located in Saskatoon, Saskatchewan, Canada north of Cedar Villa Road, within city limits, in the furthest south west area of the city. 52° 06′ 106° 45′
Addresses:
Part SE 23-36-6 – Afforestation Area – 241 Township Road 362-A
Part SE 23-36-6 – SW Off-Leash Recreation Area (Richard St. Barbe Baker Afforestation Area ) – 355 Township Road 362-A
S ½ 22-36-6 Richard St. Barbe Baker Afforestation Area (West of SW OLRA) – 467 Township Road 362-A
NE 21-36-6 “George Genereux” Afforestation Area – 133 Range Road 3063
Wikimapia Map: type in Richard St. Barbe Baker Afforestation Area
Google Maps This greenspace is located in the South West area of Saskatoon
Richard St. Barbe Baker Afforestation Area. George Genereux Urban Regional Park. 