Ads
related to: proxy indicators
Search results
Results from the WOW.Com Content Network
In each case, the proxy indicator has been influenced by a particular seasonal climate parameter (e.g., summer temperature or monsoon intensity) at the time in which they were laid down or grew. Interpretation of climate proxies requires a range of ancillary studies, including calibration of the sensitivity of the proxy to climate and cross ...
Global paleoclimate indicators are the proxies sensitive to global paleoclimatic environment changes. They are mostly derived from marine sediments.Paleoclimate indicators derived from terrestrial sediments, on the other hand, are commonly influenced by local tectonic movements and paleogeographic variations.
In statistics, a proxy or proxy variable is a variable that is not in itself directly relevant, but that serves in place of an unobservable or immeasurable variable. [1] In order for a variable to be a good proxy, it must have a close correlation , not necessarily linear, with the variable of interest.
Paleoclimatology uses a variety of proxy methods from Earth and life sciences to obtain data previously preserved within rocks, sediments, boreholes, ice sheets, tree rings, corals, shells, and microfossils. Combined with techniques to date the proxies, the paleoclimate records are used to determine the past states of Earth's atmosphere.
Using proxy indicators for quantitative estimates of past temperature record had developed sporadically from the 1930s onwards, and Bradley & Jones 1993 introduced the "Composite Plus Scaling" (CPS) method. [9] [10] Their reconstruction back to 1400 featured in the IPCC Second Assessment Report.
The number of people receiving benefits after an initial week of aid, a proxy for hiring, slipped 5,000 to a seasonally adjusted 1.874 million during the week ending Dec. 7, the claims report showed.
The latest measure would allow both new mothers and fathers to vote remotely for 12 weeks, unlike Luna’s initial bill, which would have only offered six weeks of proxy voting and only to ...
It is commonly used as a measure of the temperature of precipitation, as a measure of groundwater/mineral interactions, and as an indicator of processes that show isotopic fractionation, like methanogenesis. In paleosciences, 18 O: 16 O data from corals, foraminifera and ice cores are used as a proxy for temperature.
Ads
related to: proxy indicators