Sentences with phrase «keeling et»

CO2 is rising (Keeling et al. 1958).

Indeed, the atmospheric CO 2 - concentrations are specified from IR gas analyzer measuring the amount of IR light absorbed in air samples (Keeling et al. 1976).

It is however not as large as would be predicted from the geographical distribution of fossil fuel burning a fact that suggests the existence of a northern sink for CO2, as already recognised a decade ago (Keeling et al., 1989; Tans et al., 1990; Enting and Mansbridge, 1991).

Quantitative analysis shows that the Northern Hemisphere sink has not changed much in magnitude since the 1960s (Keeling et al., 1989; Fan et al., 1999).

It might reflect, at least in part, a natural source - sink pattern of oceanic CO2 fluxes (Keeling et al., 1989; Broecker and Peng, 1992).

This view is corroborated, at least for the 1990s, by analyses of the concurrent latitudinal gradients of 13C (Ciais et al., 1995a, b) and O2 (Keeling et al., 1996b).

Limits on CO2 Climate Forcing from Recent Temperature Data of Earth The atmospheric CO2 is slowly increasing with time [Keeling et al. (2004)-RSB-.

Observations of annual mean concentrations of O2, centred on January 1, are shown from the average of the Alert and La Jolla monitoring stations (Keeling et al., 1996b; Manning, 2001; solid circles) and from the average of the Cape Grim and Point Barrow monitoring stations (Battle et al., 2000; solid triangles).

This leads to a lowering of the atmospheric 13C / 12C isotope ratio, which takes years to centuries to work its way through the carbon cycle (Keeling et al., 1980; Tans et al., 1993; Ciais et al., 1995a, b).

I read the Keeling et al 1995 paper.

Ecosystems within and on the fringes of OMZs could be particularly affected by the O2 and warming changes predicted for bathyal environments (Table 3; Figures 2, 3; Keeling et al., 2010; Sperling et al., 2016).

[Ralph F. Keeling et al., Atmospheric evidence for a global secular increase in carbon isotopic discrimination of land photosynthesis]

Not exact matches

We have proposed that what is needed to keep the Barque of Peter on a more even keel is a new synthesis of modern science and Catholic teaching - one which, as Catholic Tradition requests, remains faithful to Christ's Magisterium from the Gospels and the Council of Jerusalem to Gaudium et Spes and Pope Benedict.

Spectroscopy and Keeling plus radiation heat transfer calculations gives you around 630 ZJ added by added CO2 and around 1200 added by all added GHGs (Murphy et al, 2009).

The outcome is that every year since the Keeling measurements began in 1958, it is evident that 57 % of emissions have on average been UPtaken by the terrestrial and oceanic biospheres (Canadell et al. 2007, Table 1).

280 ppmv is the traditional value, the Vostok ice cores registered 284.7 in 342 BC (Petit et al, Nature v. 399 (6735) pp 429 - 436, 1999), and I used 280 when fitting the CDIAC data directly to the Keeling curve here on the assumption that 44 % of emissions remained in the atmosphere.

With regard to the appropriateness of the Hofmann law and my fit of it to the Keeling curve, I commented on Dec. 5, the second day of this thread, here where I said Embarrassingly I discussed the poster with Pieter Tans, one of the coauthors of the Hofmann et al result cited in the poster, for ten minutes without recognizing his name until he pointed it out.

The arrow labelled fossil fuel burning denotes the effect of the combustion of fossil fuels (Marland et al., 2000; British Petroleum, 2000) based on the relatively well known O2: CO2 stoichiometric relation of the different fuel types (Keeling, 1988).

Graven HD, Keeling RF, Piper SC, et al., 2013, Enhanced Seasonal Exchange of CO2 by Northern Ecosystems Since 1960, Science, Vol: 341, ISSN: 0036 - 8075, pages 1085 - 1089 (the amplitude of the seasonal vegetation effect measured aboard planes (3 km to 6 km) has, north of 45 ° N grown by 50 % w.r.t airplane observations carried late 1950s beginning 1960s.)

A search of MacFarling Meure et al. produced no hits on Keeling, Mauna, MLO, or «the CO2 record».

These findings are consistent with the variability of global OH reconstructed by Prinn et al. (2005), Manning and Keeling (2006) and Bousquet et al. (2005), which is strongly affected by large - scale wildfires as in 1997 to 1998, by El Niño events and by the Mt. Pinatubo eruption.

Fonselius et al. (1955); Fonselius et al. (1956); for critique, see From and Keeling (1986), p. 88, and passim for history of CO2 measurements generally; also Keeling (1998), p. 43.

For bibliography on CO2 measurements and ideas to 1951, see Stepanova (1952); sheep: Woodman (1904); criticism: Slocum (1955); Fonselius et al. (1956) with graph; however, some evidence for a gradual increase was summarized by Junge (1958); measurements are reviewed by Bolin (1972); From and Keeling (1986).

1996 Ralph F. Keeling, et al., «Global and Hemispheric CO2 Sinks Deduced from Changes in Atmospheric O2 Concentration.»