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INDICATEUR CLIMATIQUE SUBSTITUTION [1 record]
Record 1 - internal organization data 2012-03-01
Record 1, English
Record 1, Subject field(s)
- Climate Change
Record 1, Main entry term, English
- proxy climate indicator
1, record 1, English, proxy%20climate%20indicator
correct
Record 1, Abbreviations, English
Record 1, Synonyms, English
Record 1, Textual support, English
Record number: 1, Textual support number: 1 DEF
Any material that provides an indirect climate measure and includes documentary evidence of harvest dates, glacier movements, tree remains, marine microfaune, and isotope measurements including oxygen 18 in ice sheets, carbon 13 in tree rings, and CaCO3 in sediments and speleothems. 1, record 1, English, - proxy%20climate%20indicator
Record number: 1, Textual support number: 1 CONT
Paleoclimate studies using AMS [Accelerator Mass Spectrometry] radiocarbon ... During the past several years, AMS measurements have increasingly supplanted the traditional counting method of dating since they offer greatly increased sensitivity (sub-milligram samples can be dated) and, in many instances, greater accuracy; they are also very much faster. However, the typical "bulk carbon" sample preparation techniques used for both AMS and ... counting leave unanswered the question of just what is being dated, a grave disadvantage in palynological and other paleoclimate studies. In contrast, the extraction procedures that have been developed here typically produce purified pollen samples which can be clearly identified under the microscope; thus, an unambiguous proxy climate indicator -pollen- is dated, and nothing else. 2, record 1, English, - proxy%20climate%20indicator
Record number: 1, Textual support number: 1 OBS
There are 3 main problems in using proxy data: dating, lag and response time, and meteorological interpretation. 1, record 1, English, - proxy%20climate%20indicator
Record 1, French
Record 1, Domaine(s)
- Changements climatiques
Record 1, Main entry term, French
- indicateur indirect du climat
1, record 1, French, indicateur%20indirect%20du%20climat
correct, masculine noun
Record 1, Abbreviations, French
Record 1, Synonyms, French
- indicateur substitutif du climat 1, record 1, French, indicateur%20substitutif%20du%20climat
correct, masculine noun
- indicateur climatique de substitution 1, record 1, French, indicateur%20climatique%20de%20substitution
correct, masculine noun
Record 1, Textual support, French
Record number: 1, Textual support number: 1 OBS
Le déterminant «substitutif» et le terme «substitution» sont surtout utilisés en statistique. 1, record 1, French, - indicateur%20indirect%20du%20climat
Record 1, Spanish
Record 1, Textual support, Spanish
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