Sentences with phrase «hemisphere ice core records»

In any event, there is unequivocal geologic evidence for parts of the GIS still in tact during the last interglacial, and Northern Hemisphere ice core records (see NEEM) now go back that far, which rules out ice - free conditions at the time in the NH.

Not exact matches

The ice core provides a complete record of the climate in the northern hemisphere over the past 250 000 years.

Utilizing the high resolution of the measurements, the team was able to detect methane fingerprints from the Southern Hemisphere that don't match temperature records from Greenland ice cores.

study published June 25 by the Proceedings of the National Academy of Sciences, the Greenland ice core drifts notably from other records of Northern Hemisphere temperatures during the Younger Dryas, a period beginning nearly 13,000 years ago of cooling so abrupt it's believed to be unmatched since.

Note that if the N hemisphere snow becomes a permanent ice pack, the extra reflectivity provides all the «amplification» needed to explain the ice core records, as forced from incident solar energy.

In fact, methane reacts so quickly and in both hemispheres almost simultaneously that its variations are used to tie the together the ice core records in Greenland and Antarctica.

To answer the question of the Medieval Warm Period, more than 1,000 tree - ring, ice core, coral, sediment and other assorted proxy records spanning both hemispheres were used to construct a global map of temperature change over the past 1,500 years (Mann 2009).

Figure 1: Northern Hemisphere temperatures were reconstructed for the past 1000 years (up to 1999) using palaeoclimatic records (tree rings, corals, ice cores, lake sediments, etc.), along with historical and long instrumental records (WMO 2000).

But globally temperatures are synchronous in both hemispheres, as the ice core records make clear.

Paleoclimate records from ice cores, marine sediment cores, and speleothems (stalagmites and stalactites) have demonstrated that abrupt Northern Hemisphere cooling and Southern Hemisphere warming occurred in response to Heinrich events.

Global solar irradiance reconstruction [48 — 50] and ice - core based sulfate (SO4) influx in the Northern Hemisphere [51] from volcanic activity (a); mean annual temperature (MAT) reconstructions for the Northern Hemisphere [52], North America [29], and the American Southwest * expressed as anomalies based on 1961 — 1990 temperature averages (b); changes in ENSO - related variability based on El Junco diatom record [41], oxygen isotopes records from Palmyra [42], and the unified ENSO proxy [UEP; 23](c); changes in PDSI variability for the American Southwest (d), and changes in winter precipitation variability as simulated by CESM model ensembles 2 to 5 [43].

In this study, more than 1000 tree - ring, ice core, coral, sediment and other assorted proxy records spanning both hemispheres were used to construct regional temperature change over the past 1500 years.

Milankovitch removed 40 watts per meter squared from the Northern Hemisphere, above 60 degrees and added 40 watts per meter squared to the Southern hemisphere below 60 degrees over the past ten thousand years and the temperatures recorded in the ice core data in Greenland and Antarctic did stay in the saHemisphere, above 60 degrees and added 40 watts per meter squared to the Southern hemisphere below 60 degrees over the past ten thousand years and the temperatures recorded in the ice core data in Greenland and Antarctic did stay in the sahemisphere below 60 degrees over the past ten thousand years and the temperatures recorded in the ice core data in Greenland and Antarctic did stay in the same bounds.