Question
A 2024 paper by Schleussner et al. contrasts a “peak and decline” pathway involving this phenomenon with one involving “enhanced protection” that eventually descends back below a desired limit. For 10 points each:
[10h] Name this phenomenon in which temperatures will exceed the 1.5-degree global warming goal set in the 2015 Paris Agreement.
ANSWER: overshoot [or climate overshoot]
[10m] Failing to meet a peak and decline pathway will result in “continued long-term warming” due to one of these processes. These general processes include ones named for Jacob Bjerknes (“BYURK-niss”).
ANSWER: feedbacks [or feedback mechanisms; or feedback loops; or Earth-system feedbacks; or positive feedback loops; accept climate change feedbacks or ice–albedo feedback or Bjerknes feedback]
[10e] The paper models climate outcomes in the “long-term state” and a warming phase that is called “pre-” this goal. This goal involves removing one ton of greenhouse gases for every ton emitted.
ANSWER: net-zero [or net-zero carbon emissions; accept climate neutrality]
<Johns Hopkins, Other Science>
Summary
| California | 2025-02-01 | Y | 3 | 13.33 | 100% | 33% | 0% |
| Lower Mid-Atlantic | 2025-02-01 | Y | 6 | 8.33 | 50% | 33% | 0% |
| Midwest | 2025-02-01 | Y | 6 | 15.00 | 83% | 50% | 17% |
| Northeast | 2025-02-01 | Y | 5 | 16.00 | 80% | 80% | 0% |
| Pacific Northwest | 2025-02-01 | Y | 2 | 20.00 | 100% | 100% | 0% |
| South Central | 2025-02-01 | Y | 2 | 15.00 | 100% | 50% | 0% |
| Southeast | 2025-02-01 | Y | 1 | 20.00 | 100% | 100% | 0% |
| Upper Mid-Atlantic | 2025-02-01 | Y | 8 | 11.25 | 63% | 50% | 0% |
Data
| UC Berkeley B | Claremont B | 0 | 10 | 10 | 20 |
| UC Berkeley A | UCLA | 0 | 0 | 10 | 10 |
| Claremont A | UCSD | 0 | 0 | 10 | 10 |
| Liberty A | Liberty B | 0 | 0 | 10 | 10 |
| William & Mary | Liberty C | 0 | 10 | 10 | 20 |
| UNC C | UNC B | 0 | 0 | 10 | 10 |
| Duke | UNC D | 0 | 0 | 0 | 0 |
| Virginia A | Virginia Tech A | 0 | 0 | 0 | 0 |
| South Carolina | Wake Forest | 0 | 10 | 0 | 10 |
| Indiana B | Chicago B | 0 | 10 | 10 | 20 |
| WashU A | Chicago C | 0 | 0 | 10 | 10 |
| WashU B | Chicago D | 10 | 10 | 10 | 30 |
| Illinois B | Illinois C | 0 | 10 | 10 | 20 |
| Missoui S&T | Chicago A | 0 | 0 | 0 | 0 |
| Missouri | Indiana A | 0 | 0 | 10 | 10 |
| Harvard A | BU | 0 | 10 | 10 | 20 |
| MIT A | Brandeis B | 0 | 10 | 10 | 20 |
| Brown A | Harvard B | 0 | 0 | 10 | 10 |
| Brandeis A | Dartmouth A | 0 | 10 | 0 | 10 |
| ASU | Texas B | 0 | 0 | 10 | 10 |
| Texas A | TAMU | 0 | 10 | 10 | 20 |
| Georgia Tech C | Bruin A | 0 | 10 | 10 | 20 |
| Tufts A | UMass Boston | 0 | 10 | 10 | 20 |
| UW A | UBC | 0 | 10 | 10 | 20 |
| Alberta | UW B | 0 | 10 | 10 | 20 |
| Cornell B | George Washington A | 0 | 0 | 0 | 0 |
| Yale A | Haverford A | 0 | 0 | 10 | 10 |
| John Jay College | Maryland B | 0 | 10 | 0 | 10 |
| Maryland A | Penn B | 0 | 0 | 10 | 10 |
| NYU A | George Washington B | 0 | 10 | 0 | 10 |
| Penn A | Haverford B | 0 | 10 | 10 | 20 |
| Rutgers A | NYU B | 0 | 0 | 10 | 10 |
| Columbia C | Vassar A | 0 | 10 | 10 | 20 |