Zobrazeno 1 - 10
of 253
pro vyhledávání: '"J A, Hargreaves"'
Publikováno v:
Climate of the Past, Vol 20, Pp 1989-1999 (2024)
We present a reconstruction of the surface climate of the mid-Pliocene Warm Period (mPWP), specifically Marine Isotope Stage (MIS) KM5c or 3.205 Ma. We combine the ensemble of climate model simulations, which contributed to the Pliocene Model Interco
Externí odkaz:
https://doaj.org/article/c6dab42346384f9999eee3d2ec17b595
Autor:
R. M. Walter, H. R. Sayani, T. Felis, K. M. Cobb, N. J. Abram, A. K. Arzey, A. R. Atwood, L. D. Brenner, É. P. Dassié, K. L. DeLong, B. Ellis, J. Emile-Geay, M. J. Fischer, N. F. Goodkin, J. A. Hargreaves, K. H. Kilbourne, H. Krawczyk, N. P. McKay, A. L. Moore, S. A. Murty, M. R. Ong, R. D. Ramos, E. V. Reed, D. Samanta, S. C. Sanchez, J. Zinke
Publikováno v:
Earth System Science Data, Vol 15, Pp 2081-2116 (2023)
The response of the hydrological cycle to anthropogenic climate change, especially across the tropical oceans, remains poorly understood due to the scarcity of long instrumental temperature and hydrological records. Massive shallow-water corals are i
Externí odkaz:
https://doaj.org/article/2a119d2402cb4c8e83d0c6a9c34c2e1c
Publikováno v:
Climate of the Past, Vol 18, Pp 1883-1896 (2022)
We present a new reconstruction of surface air temperature and sea surface temperature for the Last Glacial Maximum. The method blends model fields and sparse proxy-based point estimates through a data assimilation approach. Our reconstruction update
Externí odkaz:
https://doaj.org/article/5f512094ca5a4e24995a75efcba024e6
Autor:
C. M. Brierley, A. Zhao, S. P. Harrison, P. Braconnot, C. J. R. Williams, D. J. R. Thornalley, X. Shi, J.-Y. Peterschmitt, R. Ohgaito, D. S. Kaufman, M. Kageyama, J. C. Hargreaves, M. P. Erb, J. Emile-Geay, R. D'Agostino, D. Chandan, M. Carré, P. J. Bartlein, W. Zheng, Z. Zhang, Q. Zhang, H. Yang, E. M. Volodin, R. A. Tomas, C. Routson, W. R. Peltier, B. Otto-Bliesner, P. A. Morozova, N. P. McKay, G. Lohmann, A. N. Legrande, C. Guo, J. Cao, E. Brady, J. D. Annan, A. Abe-Ouchi
Publikováno v:
Climate of the Past, Vol 16, Pp 1847-1872 (2020)
The mid-Holocene (6000 years ago) is a standard time period for the evaluation of the simulated response of global climate models using palaeoclimate reconstructions. The latest mid-Holocene simulations are a palaeoclimate entry card for the Palaeocl
Externí odkaz:
https://doaj.org/article/e4dd0c3bc4bf4b52a7516287f6ef76cc
Autor:
M. Renoult, J. D. Annan, J. C. Hargreaves, N. Sagoo, C. Flynn, M.-L. Kapsch, Q. Li, G. Lohmann, U. Mikolajewicz, R. Ohgaito, X. Shi, Q. Zhang, T. Mauritsen
Publikováno v:
Climate of the Past, Vol 16, Pp 1715-1735 (2020)
In this paper we introduce a Bayesian framework, which is explicit about prior assumptions, for using model ensembles and observations together to constrain future climate change. The emergent constraint approach has seen broad application in recent
Externí odkaz:
https://doaj.org/article/bb763e62ba1443daaf9f3c57b8232b94
Publikováno v:
Earth System Dynamics, Vol 11, Pp 709-719 (2020)
We examine what can be learnt about climate sensitivity from variability in the surface air temperature record over the instrumental period, from around 1880 to the present. While many previous studies have used trends in observational time series to
Externí odkaz:
https://doaj.org/article/4a3cda1f3a3b4537a0bf8928f70238e6
Autor:
J. D. Annan, J. C. Hargreaves
Publikováno v:
Earth System Dynamics, Vol 11, Pp 347-356 (2020)
Observational constraints on the equilibrium climate sensitivity have been generated in a variety of ways, but a number of results have been calculated which appear to be based on somewhat informal heuristics. In this paper we demonstrate that many o
Externí odkaz:
https://doaj.org/article/9816a83fd1a54477ac0e0abfe8f576c3
Autor:
T. Ogura, H. Shiogama, M. Watanabe, M. Yoshimori, T. Yokohata, J. D. Annan, J. C. Hargreaves, N. Ushigami, K. Hirota, Y. Someya, Y. Kamae, H. Tatebe, M. Kimoto
Publikováno v:
Geoscientific Model Development, Vol 10, Pp 4647-4664 (2017)
This study discusses how much of the biases in top-of-atmosphere (TOA) radiation and clouds can be removed by parameter tuning in the present-day simulation of a climate model in the Coupled Model Inter-comparison Project phase 5 (CMIP5) generatio
Externí odkaz:
https://doaj.org/article/31fff4b4da5e461ca8794fd92c3dfa52
Autor:
J. D. Annan, J. C. Hargreaves
Publikováno v:
Earth System Dynamics, Vol 8, Iss 1, Pp 211-224 (2017)
The concept of independence has been frequently mentioned in climate science research, but has rarely been defined and discussed in a theoretically robust and quantifiable manner. In this paper we argue that any discussion must start from a clear and
Externí odkaz:
https://doaj.org/article/72e219b5b5cd495aa5e53b234baaf80e
Autor:
J. C. Hargreaves, J. D. Annan
Publikováno v:
Climate of the Past, Vol 12, Iss 8, Pp 1591-1599 (2016)
The mid-Pliocene Warm Period (mPWP) is the most recent interval in which atmospheric carbon dioxide was substantially higher than in modern pre-industrial times. It is, therefore, a potentially valuable target for testing the ability of climate model
Externí odkaz:
https://doaj.org/article/aea4502049354b82bfb9a3040769109c