Jean Jouzel
Dados Biográficos
| ID | 1353274 |
|---|---|
| NOME | Jean Jouzel |
| PRENOMES | Jean |
| SOBRENOME | Jouzel |
| ASSINATURA | JOUZEL J |
| AFILIAÇÕES | Commissariat à l'Énergie Atomique et aux Énergies Alternatives |
| VERIFICADO | Não |
| TOTAL DE OBRAS | 16 |
| TOTAL DE CITAÇÕES | 2 |
| TOTAL COMO AUTOR | 16 |
| TOTAL COMO EDITOR | 0 |
| PRIMEIRO ANO DE PUBLICAÇÃO | 1993 |
| ANO MAIS RECENTE DE PUBLICAÇÃO | 2022 |
| ÍNDICE H | 1 |
Une COP en demi-teinte
Le bilan de la COP 26 apparaît contrasté. D'un côté, les instances politiques prennent en compte le travail des scientifiques du Giec et un nombre croissant de pays ont adopté l'objectif de neutralité carbone à horizon de 2050, nécessaire pour limiter le réchauffement à 1,5 degré. De l'autre, les mesures effectives sont très insuffisantes. La solidarité avec les pays du Sud est déficiente. Même dans les pays développés, l'adaptation aux conséquen…
Comment s’est construite la légitimité du Giec
Apports et limites de la COP21
La Conférence de Paris sur le climat, qui s'est tenue en décembre dernier, s'est terminée par un accord reconnu comme un succès. Tout est pourtant loin d'être gagné. Quels sont les apports et quelles sont les limites de ce qui a été adopté
Une expertise collective sur le climat
Notre connaissance de l'évolution du climat et des conséquences à prévoir est issue des travaux d'une instance internationale sous l'égide de l'ONU, le GIEC. Comment s'est-il constitué ? Comment fonctionne-t-il ? À quels résultats est-il parvenu ? Ses rapports sont-ils fiables ? Les décisions politiques à prendre dépendent en grande part de la réponse à ces questions
Use of 10 Be to Predict Atmospheric 14 C Variations during the Laschamp Excursion
The Laschamp excursion is a period of reduced geomagnetic field intensity occurring 40.7 ± 1.0 kyr ago. As a consequence, cosmogenic isotope production increased dramatically and its sensitivity to solar activity was enhanced during this period. The latter occurs because a larger fraction of the lower-energy interstellar galactic cosmic-ray particles, normally excluded by the geomagnetic field, is able to reach Earth's atmosphere. This produces a…
The White Planet
From the Arctic Ocean and ice sheets of Greenland, to the glaciers of the Andes and Himalayas, to the great frozen desert of Antarctica, The White Planet takes readers on a spellbinding scientific journey through the shrinking world of ice and snow to tell the story of the expeditions and discoveries that have transformed our understanding of global climate. Written by three internationally renowned scientists at the center of many breakthroughs …
White Planet
Conseil économique, social et environnemental
Le savant et la politique
Jean Jouzel, climatologue mondialement reconnu qui vient de recevoir, avec sa collègue chimiste américaine Susan Solomon, le prix Vetlesen - l'équivalent du Nobel pour les sciences de la Terre et de l'univers -, est aussi profondément engagé dans la lutte contre le réchauffement climatique : que ce soit au sein du GIEC (Groupe d'experts Intergouvernemental sur l'Evolution du Climat) depuis plus de vingt ans ; ou plus récemment au sein du comité d…
Paleoclimates
Since the early 1960s, the ice core community has produced a wealth of scientific results from a still relatively limited number of deep drilling sites in Greenland and Antarctica with the longest record extending back to the last interglacial in Greenland and covering eight glacial–interglacial cycles in Antarctica. Although measurements performed on the first ice cores, Camp Century and Byrd, largely focused on the isotopic composition of the i…
High-Resolution Greenland Ice Core Data Show Abrupt Climate Change Happens in Few Years
The last two abrupt warmings at the onset of our present warm interglacial period, interrupted by the Younger Dryas cooling event, were investigated at high temporal resolution from the North Greenland Ice Core Project ice core. The deuterium excess, a proxy of Greenland precipitation moisture source, switched mode within 1 to 3 years over these transitions and initiated a more gradual change (over 50 years) of the Greenland air temperature, as r…
Last Interglacial Climates
The last interglacial, commonly understood as an interval with climate as warm or warmer than today, is represented by marine isotope stage (MIS) 5e, which is a proxy record of low global ice volume and high sea level. It is arbitrarily dated to begin at approximately 130,000 yr B.P. and end at 116,000 yr B.P. with the onset of the early glacial unit MIS 5d. The age of the stage is determined by correlation to uranium–thorium dates of raised cora…
Holocene Climate Variability in Antarctica Based on 11 Ice-Core Isotopic Records
A comparison is made of the Holocene records obtained from water isotope measurements along 11 ice cores from coastal and central sites in east Antarctica (Vostok, Dome B, Plateau Remote, Komsomolskaia, Dome C, Taylor Dome, Dominion Range, D47, KM105, and Law Dome) and west Antarctica (Byrd), with temporal resolution from 20 to 50 yr. The long-term trends possibly reflect local ice sheet elevation fluctuations superimposed on common climatic fluc…
Implications of Stratigraphic and Paleoclimatic Records of the Last Interglaciation from the Nordic Seas
Climatic reconstruction of glacial to interglacial episodes from oxygen isotopes in sediment cores from the Nordic seas is complicated by strong local meltwater contributions to the oxygen isotope changes. Combination of benthic and planktic foraminiferal isotope data with foraminiferal abundances and ice-rafted debris (IRD) allows separation of local and global effects and subdivision of the marine oxygen isotope events 6.2–5.4, which include th…
Climat du futur
International audience
Correlations between climate records from North Atlantic sediments and Greenland ice
Use of 10 Be to Predict Atmospheric 14 C Variations during the Laschamp Excursion
The Laschamp excursion is a period of reduced geomagnetic field intensity occurring 40.7 ± 1.0 kyr ago. As a consequence, cosmogenic isotope production increased dramatically and its sensitivity to solar activity was enhanced during this period. The latter occurs because a larger fraction of the lower-energy interstellar galactic cosmic-ray particles, normally excluded by the geomagnetic field, is able to reach Earth's atmosphere. This produces a…
Paleoclimates
Since the early 1960s, the ice core community has produced a wealth of scientific results from a still relatively limited number of deep drilling sites in Greenland and Antarctica with the longest record extending back to the last interglacial in Greenland and covering eight glacial–interglacial cycles in Antarctica. Although measurements performed on the first ice cores, Camp Century and Byrd, largely focused on the isotopic composition of the i…
Correlations between climate records from North Atlantic sediments and Greenland ice
Climat du futur
International audience
Implications of Stratigraphic and Paleoclimatic Records of the Last Interglaciation from the Nordic Seas
Climatic reconstruction of glacial to interglacial episodes from oxygen isotopes in sediment cores from the Nordic seas is complicated by strong local meltwater contributions to the oxygen isotope changes. Combination of benthic and planktic foraminiferal isotope data with foraminiferal abundances and ice-rafted debris (IRD) allows separation of local and global effects and subdivision of the marine oxygen isotope events 6.2–5.4, which include th…
Holocene Climate Variability in Antarctica Based on 11 Ice-Core Isotopic Records
A comparison is made of the Holocene records obtained from water isotope measurements along 11 ice cores from coastal and central sites in east Antarctica (Vostok, Dome B, Plateau Remote, Komsomolskaia, Dome C, Taylor Dome, Dominion Range, D47, KM105, and Law Dome) and west Antarctica (Byrd), with temporal resolution from 20 to 50 yr. The long-term trends possibly reflect local ice sheet elevation fluctuations superimposed on common climatic fluc…
Last Interglacial Climates
The last interglacial, commonly understood as an interval with climate as warm or warmer than today, is represented by marine isotope stage (MIS) 5e, which is a proxy record of low global ice volume and high sea level. It is arbitrarily dated to begin at approximately 130,000 yr B.P. and end at 116,000 yr B.P. with the onset of the early glacial unit MIS 5d. The age of the stage is determined by correlation to uranium–thorium dates of raised cora…
High-Resolution Greenland Ice Core Data Show Abrupt Climate Change Happens in Few Years
The last two abrupt warmings at the onset of our present warm interglacial period, interrupted by the Younger Dryas cooling event, were investigated at high temporal resolution from the North Greenland Ice Core Project ice core. The deuterium excess, a proxy of Greenland precipitation moisture source, switched mode within 1 to 3 years over these transitions and initiated a more gradual change (over 50 years) of the Greenland air temperature, as r…
Paleoclimates
Since the early 1960s, the ice core community has produced a wealth of scientific results from a still relatively limited number of deep drilling sites in Greenland and Antarctica with the longest record extending back to the last interglacial in Greenland and covering eight glacial–interglacial cycles in Antarctica. Although measurements performed on the first ice cores, Camp Century and Byrd, largely focused on the isotopic composition of the i…
The White Planet
From the Arctic Ocean and ice sheets of Greenland, to the glaciers of the Andes and Himalayas, to the great frozen desert of Antarctica, The White Planet takes readers on a spellbinding scientific journey through the shrinking world of ice and snow to tell the story of the expeditions and discoveries that have transformed our understanding of global climate. Written by three internationally renowned scientists at the center of many breakthroughs …
White Planet
Conseil économique, social et environnemental
Le savant et la politique
Jean Jouzel, climatologue mondialement reconnu qui vient de recevoir, avec sa collègue chimiste américaine Susan Solomon, le prix Vetlesen - l'équivalent du Nobel pour les sciences de la Terre et de l'univers -, est aussi profondément engagé dans la lutte contre le réchauffement climatique : que ce soit au sein du GIEC (Groupe d'experts Intergouvernemental sur l'Evolution du Climat) depuis plus de vingt ans ; ou plus récemment au sein du comité d…
Use of 10 Be to Predict Atmospheric 14 C Variations during the Laschamp Excursion
The Laschamp excursion is a period of reduced geomagnetic field intensity occurring 40.7 ± 1.0 kyr ago. As a consequence, cosmogenic isotope production increased dramatically and its sensitivity to solar activity was enhanced during this period. The latter occurs because a larger fraction of the lower-energy interstellar galactic cosmic-ray particles, normally excluded by the geomagnetic field, is able to reach Earth's atmosphere. This produces a…
Une expertise collective sur le climat
Notre connaissance de l'évolution du climat et des conséquences à prévoir est issue des travaux d'une instance internationale sous l'égide de l'ONU, le GIEC. Comment s'est-il constitué ? Comment fonctionne-t-il ? À quels résultats est-il parvenu ? Ses rapports sont-ils fiables ? Les décisions politiques à prendre dépendent en grande part de la réponse à ces questions
Apports et limites de la COP21
La Conférence de Paris sur le climat, qui s'est tenue en décembre dernier, s'est terminée par un accord reconnu comme un succès. Tout est pourtant loin d'être gagné. Quels sont les apports et quelles sont les limites de ce qui a été adopté
Comment s’est construite la légitimité du Giec
Une COP en demi-teinte
Le bilan de la COP 26 apparaît contrasté. D'un côté, les instances politiques prennent en compte le travail des scientifiques du Giec et un nombre croissant de pays ont adopté l'objectif de neutralité carbone à horizon de 2050, nécessaire pour limiter le réchauffement à 1,5 degré. De l'autre, les mesures effectives sont très insuffisantes. La solidarité avec les pays du Sud est déficiente. Même dans les pays développés, l'adaptation aux conséquen…
Geology and Paleoclimatology Research (7 obras) · Geography (6 obras) · Climate change (5 obras) · Climatology (5 obras) · Geology (5 obras) · Glacial period (5 obras) · Humanities (5 obras) · Ice core (5 obras) · Oceanography (5 obras) · Paleoclimatology (5 obras)