Zobrazeno 1 - 10
of 16
pro vyhledávání: '"C. J. Poulsen"'
Publikováno v:
Climate of the Past, Vol 20, Pp 495-522 (2024)
Paleoclimate reconstructions of the Early Eocene provide important data constraints on the climate and hydrologic cycle under extreme warm conditions. Available terrestrial water isotope records have been primarily interpreted to signal an enhanced h
Externí odkaz:
https://doaj.org/article/f642bd05126445479f5a14fc53a5e3f3
Autor:
M. Kageyama, S. P. Harrison, M.-L. Kapsch, M. Lofverstrom, J. M. Lora, U. Mikolajewicz, S. Sherriff-Tadano, T. Vadsaria, A. Abe-Ouchi, N. Bouttes, D. Chandan, L. J. Gregoire, R. F. Ivanovic, K. Izumi, A. N. LeGrande, F. Lhardy, G. Lohmann, P. A. Morozova, R. Ohgaito, A. Paul, W. R. Peltier, C. J. Poulsen, A. Quiquet, D. M. Roche, X. Shi, J. E. Tierney, P. J. Valdes, E. Volodin, J. Zhu
Publikováno v:
Climate of the Past, Vol 17, Pp 1065-1089 (2021)
The Last Glacial Maximum (LGM, ∼ 21 000 years ago) has been a major focus for evaluating how well state-of-the-art climate models simulate climate changes as large as those expected in the future using paleoclimate reconstructions. A new generation
Externí odkaz:
https://doaj.org/article/27b3601d755e466d8cd0ad721a926274
Autor:
D. J. Lunt, F. Bragg, W.-L. Chan, D. K. Hutchinson, J.-B. Ladant, P. Morozova, I. Niezgodzki, S. Steinig, Z. Zhang, J. Zhu, A. Abe-Ouchi, E. Anagnostou, A. M. de Boer, H. K. Coxall, Y. Donnadieu, G. Foster, G. N. Inglis, G. Knorr, P. M. Langebroek, C. H. Lear, G. Lohmann, C. J. Poulsen, P. Sepulchre, J. E. Tierney, P. J. Valdes, E. M. Volodin, T. Dunkley Jones, C. J. Hollis, M. Huber, B. L. Otto-Bliesner
Publikováno v:
Climate of the Past, Vol 17, Pp 203-227 (2021)
We present results from an ensemble of eight climate models, each of which has carried out simulations of the early Eocene climate optimum (EECO, ∼ 50 million years ago). These simulations have been carried out in the framework of the Deep-Time Mod
Externí odkaz:
https://doaj.org/article/7b6841f438e54b4f9d2617c7b44cdd2b
Autor:
J. Zhu, C. J. Poulsen
Publikováno v:
Climate of the Past, Vol 17, Pp 253-267 (2021)
Equilibrium climate sensitivity (ECS) has been directly estimated using reconstructions of past climates that are different than today's. A challenge to this approach is that temperature proxies integrate over the timescales of the fast feedback proc
Externí odkaz:
https://doaj.org/article/0e693f1358814475a138d29f7af43e95
Autor:
J.-B. Ladant, C. J. Poulsen, F. Fluteau, C. R. Tabor, K. G. MacLeod, E. E. Martin, S. J. Haynes, M. A. Rostami
Publikováno v:
Climate of the Past, Vol 16, Pp 973-1006 (2020)
Understanding of the role of ocean circulation on climate during the Late Cretaceous is contingent on the ability to reconstruct its modes and evolution. Geochemical proxies used to infer modes of past circulation provide conflicting interpretations
Externí odkaz:
https://doaj.org/article/1108046c49484114a26873c313ada976
Autor:
H. Shen, C. J. Poulsen
Publikováno v:
Climate of the Past, Vol 15, Pp 169-187 (2019)
The elevation history of the Himalaya–Tibet orogen is central to understanding the evolution and dynamics of both the India–Asia collision and the Asian monsoons. The surface elevation history of the region is largely deduced from stable isotope
Externí odkaz:
https://doaj.org/article/0f2b2f69a7e74767b850d6a8c8ee631d
Autor:
D. J. Lunt, M. Huber, E. Anagnostou, M. L. J. Baatsen, R. Caballero, R. DeConto, H. A. Dijkstra, Y. Donnadieu, D. Evans, R. Feng, G. L. Foster, E. Gasson, A. S. von der Heydt, C. J. Hollis, G. N. Inglis, S. M. Jones, J. Kiehl, S. Kirtland Turner, R. L. Korty, R. Kozdon, S. Krishnan, J.-B. Ladant, P. Langebroek, C. H. Lear, A. N. LeGrande, K. Littler, P. Markwick, B. Otto-Bliesner, P. Pearson, C. J. Poulsen, U. Salzmann, C. Shields, K. Snell, M. Stärz, J. Super, C. Tabor, J. E. Tierney, G. J. L. Tourte, A. Tripati, G. R. Upchurch, B. S. Wade, S. L. Wing, A. M. E. Winguth, N. M. Wright, J. C. Zachos, R. E. Zeebe
Publikováno v:
Geoscientific Model Development, Vol 10, Iss 2, Pp 889-901 (2017)
Past warm periods provide an opportunity to evaluate climate models under extreme forcing scenarios, in particular high ( > 800 ppmv) atmospheric CO2 concentrations. Although a post hoc intercomparison of Eocene ( ∼ 50 Ma) climate model simulations
Externí odkaz:
https://doaj.org/article/f7eaea5171304bb78e8d55e7d251702b
Publikováno v:
Climate of the Past, Vol 10, Iss 1, Pp 41-50 (2014)
Milankovitch's theory states that orbitally induced changes in high-latitude summer insolation dictate the waxing and waning of ice sheets. Accordingly, precession should dominate the ice-volume response because it most strongly modulates summer inso
Externí odkaz:
https://doaj.org/article/60e879ed40bd46d99432bdcc9c56a65b
Publikováno v:
Climate of the Past, Vol 8, Iss 2, Pp 565-576 (2012)
Vegetation-climate interactions are thought to have amplified polar warmth during past warm periods. Here, we explore the vegetation-climate interactions in the mid-Cretaceous using a fully coupled ocean-atmosphere general circulation model with a dy
Externí odkaz:
https://doaj.org/article/9aff9e33edcf408199cacc26968ef570
Autor:
S.-Y. Lee, C. J. Poulsen
Publikováno v:
Climate of the Past, Vol 4, Iss 4, Pp 205-213 (2008)
Pleistocene benthic δ18O records exhibit strong spectral power at ~41 kyr, indicating that global ice volume has been modulated by Earth's axial tilt. This feature, and weak spectral power in the precessional band, has been attributed to the influen
Externí odkaz:
https://doaj.org/article/8e73fec4f496432b959a6ee869adc15f