Observational determination of surface radiative forcing by CO2 from 2000 to 2010

  title={Observational determination of surface radiative forcing by CO2 from 2000 to 2010},
  author={Daniel R. Feldman and William D. Collins and P. Jonathan Gero and Margaret S. Torn and Eli J. Mlawer and Timothy Shippert},
The climatic impact of CO2 and other greenhouse gases is usually quantified in terms of radiative forcing, calculated as the difference between estimates of the Earth’s radiation field from pre-industrial and present-day concentrations of these gases. Radiative transfer models calculate that the increase in CO2 since 1750 corresponds to a global annual-mean radiative forcing at the tropopause of 1.82 ± 0.19 W m−2 (ref. 2). However, despite widespread scientific discussion and modelling of the… 

Observationally derived rise in methane surface forcing mediated by water vapour trends

Atmospheric methane (CH4) mixing ratios exhibited a plateau between 1995 and 2006 and have subsequently been increasing. While there are a number of competing explanations for the temporal evolution

Observational Evidence of Increasing Global Radiative Forcing

Changes in atmospheric composition, such as increasing greenhouse gases, cause an initial radiative imbalance to the climate system, quantified as the instantaneous radiative forcing. This

Greenhouse effect from the point of view of radiative transfer

  • S. Barcza
  • Environmental Science, Physics
    Acta Geodaetica et Geophysica
  • 2016
Radiative power balance of a planet in the solar system is delineated. The terrestrial powers are transformed to average global flux in an effective atmospheric column approximation, its components

Radiation Transfer Calculations and Assessment of Global Warming by CO2

  • H. Harde
  • Environmental Science
    Adv. Artif. Neural Syst.
  • 2017
Detailed line-by-line radiation transfer calculations, which were performed under different atmospheric conditions for the most important greenhouse gases water vapor, carbon dioxide, methane, and ozone, are presented to assess the CO2 global warming by means of an advanced two-layer climate model and to disclose some larger discrepancies in calculating the climate sensitivity.

Reducing uncertainties in climate models

Implementing accurate calculations of radiative forcing can improve climate projections and provide a straightforward means to substantially reduce uncertainties in model projections of climate change.

Processes shaping the spatial pattern and seasonality of the surface air temperature response to anthropogenic forcing

In the period 1960–2010, the land surface air temperature (SAT) warmed more rapidly over some regions relative to the global mean. Using a set of time-slice experiments, we highlight how different

Radiative flux and forcing parameterization error in aerosol‐free clear skies

A dependence on atmospheric conditions, including integrated water vapor, means that global estimates of parameterization error relevant for the radiative forcing of climate change will require much more ambitious calculations.

Contribution of anthropogenic CO2 in China to global radiative forcing and its offset by the ecosystem during 2000–2015

Using global CO2 assimilation data from 2000 to 2015 and a carbon–climate parameterized scheme to analyze anthropogenic carbon emissions and their climatic effects while considering the climate effects of the terrestrial ecosystem carbon sink, the importance of ecosystems on mitigating climate warming is highlighted.

Drivers of Global Clear Sky Surface Downwelling Longwave Irradiance Trends From 1984 to 2017

Radiation changes at the Earth's surface alter climate, however, the causes of observed surface radiation changes are not precisely quantified globally. With complete global coverage by ERA‐Interim,

Does Surface Temperature Respond to or Determine Downwelling Longwave Radiation?

Downward longwave radiation (DLR) is often assumed to be an independent forcing on the surface energy budget in analyses of Arctic warming and land‐atmosphere interaction. We use radiative kernels to



Radiative forcing by long‐lived greenhouse gases: Calculations with the AER radiative transfer models

A primary component of the observed, recent climate change is the radiative forcing from increased concentrations of long-lived greenhouse gases (LLGHGs). Effective simulation of anthropogenic

Increases in greenhouse forcing inferred from the outgoing longwave radiation spectra of the Earth in 1970 and 1997

This work analyses the difference between the spectra of the outgoing longwave radiation of the Earth as measured by orbiting spacecraft in 1970 and 1997 to provide direct experimental evidence for a significant increase in the Earth's greenhouse effect that is consistent with concerns over radiative forcing of climate.

Radiative forcing by well-mixed greenhouse gases: Estimates from climate models in the Intergovernme

The radiative effects from increased concentrations of well-mixed greenhouse gases (WMGHGs) represent the most significant and best understood anthropogenic forcing of the climate system. The most

Water‐vapor climate feedback inferred from climate fluctuations, 2003–2008

Between 2003 and 2008, the global‐average surface temperature of the Earth varied by 0.6°C. We analyze here the response of tropospheric water vapor to these variations. Height‐resolved measurements

The climatological record of clear‐sky longwave radiation at the Earth's surface: evidence for water vapour feedback?

An increase in global surface temperature of between 1.4 K and 5.8 K is expected to occur by 2100 due to a doubling of the global concentration of CO2. Associated with this predicted surface warming

A multi-year record of airborne CO 2 observations in the US Southern Great Plains

Abstract. We report on 10 yr of airborne measurements of atmospheric CO2 mole fraction from continuous and flask systems, collected between 2002 and 2012 over the Atmospheric Radiation Measurement

Precipitation, radiative forcing and global temperature change

Radiative forcing is a useful tool for predicting equilibrium global temperature change. However, it is not so useful for predicting global precipitation changes, as changes in precipitation strongly

Anthropogenic greenhouse forcing and strong water vapor feedback increase temperature in Europe

Europe's temperature increases considerably faster than the northern hemisphere average. Detailed month‐by‐month analyses show temperature and humidity changes for individual months that are similar

Separation of longwave climate feedbacks from spectral observations

[1] We conduct a theoretical investigation into whether changes in the outgoing longwave radiation (OLR) spectrum can be used to constrain longwave greenhouse-gas forcing and climate feedbacks, with

Impact of CO2 measurement bias on CarbonTracker surface flux estimates

[1] For over 20 years, atmospheric measurements of CO2 dry air mole fractions have been used to derive estimates of CO2 surface fluxes. Historically, only a few research laboratories made these