Strong Local Evaporative Cooling Over Land Due to Atmospheric Aerosols

  title={Strong Local Evaporative Cooling Over Land Due to Atmospheric Aerosols},
  author={T C Chakraborty and Xuhui Lee and David M. Lawrence},
  journal={Journal of Advances in Modeling Earth Systems},
Aerosols can enhance terrestrial productivity through increased absorption of solar radiation by the shaded portion of the plant canopy—the diffuse radiation fertilization effect. Although this process can, in principle, alter surface evaporation due to the coupling between plant water loss and carbon uptake, with the potential to change the surface temperature, aerosol‐climate interactions have been traditionally viewed in light of the radiative effects within the atmosphere. Here, we develop… 

Diffuse Radiation Forcing Constraints on Gross Primary Productivity and Global Terrestrial Evapotranspiration

The diffuse radiation fertilization effect—the increase in plant productivity in the presence of higher diffuse radiation (K↓,d)—is an important yet understudied aspect of atmosphere‐biosphere

Observations of Aerosol-Vapor Pressure Deficit-Evaporative Fraction coupling over India

Abstract. North India is a densely populated subtropical region with heavy aerosol loading, frequent heatwaves and strong atmosphere-biosphere coupling, making it ideal for studying the impacts of

Observations of aerosol–vapor pressure deficit–evaporative fraction coupling over India

Abstract. Northern India is a densely populated subtropical region with heavy aerosol loading (mean aerosol optical depth or AOD is ∼0.7), frequent heat waves, and strong atmosphere–biosphere

Distinct roles of land cover in regulating spatial variabilities of temperature responses to radiative effects of aerosols and clouds

Surface temperature responses to radiative perturbations due to aerosols and clouds are complicated by the land surface properties. To disentangle these complexities, this study, from a terrestrial

Detection and Attribution of Human Influence on the Global Diurnal Temperature Range Decline

A decline in the global diurnal temperature range (DTR) and its implications for human and natural systems have been widely reported, yet it remains unclear whether humans have a detectable influence



Aerosol effects on global land surface energy fluxes during 2003–2010

Aerosols affect downward solar radiation, impacting the terrestrial ecosystem carbon dynamics and energy budget. Here we apply a coupled modeling framework of a terrestrial ecosystem model and an

Observed impact of atmospheric aerosols on the surface energy budget

AbstractAtmospheric aerosols scatter and potentially absorb incoming solar radiation, thereby reducing the total amount of radiation reaching the surface and increasing the fraction that is diffuse.

Impact of changes in diffuse radiation on the global land carbon sink

It is estimated that variations in diffuse fraction, associated largely with the ‘global dimming’ period, enhanced the land carbon sink by approximately one-quarter between 1960 and 1999, however, under a climate mitigation scenario for the twenty-first century in which sulphate aerosols decline before atmospheric CO2 is stabilized, this ‘diffuse-radiation’ fertilization effect declines rapidly to near zero by the end of the twentieth century.

A regional climate model study of how biomass burning aerosol impacts land-atmosphere interactions over the Amazon

[1] Ensemble simulations of a regional climate model assuming smoke aerosol in the Amazon suggest that dynamic changes of cloud cover contributes to the radiative effect of the smoke on the diurnal

Global lake evaporation accelerated by changes in surface energy allocation in a warmer climate

Lake evaporation is a sensitive indicator of the hydrological response to climate change. Variability in annual lake evaporation has been assumed to be controlled primarily by the incoming surface

Advantages of diffuse radiation for terrestrial ecosystem productivity

[1] Clouds and aerosols alter the proportion of diffuse radiation in global solar radiation reaching the Earth's surface. It is known that diffuse and direct beam radiation differ in the way they

Climate forcing and response to idealized changes in surface latent and sensible heat

Land use and land cover changes affect the partitioning of latent and sensible heat, which impacts the broader climate system. Increased latent heat flux to the atmosphere has a local cooling

Fires increase Amazon forest productivity through increases in diffuse radiation

Atmospheric aerosol scatters solar radiation increasing the fraction of diffuse radiation and the efficiency of photosynthesis. We quantify the impacts of biomass burning aerosol (BBA) on diffuse

Aerosol light scattering effect on terrestrial plant productivity and energy fluxes over the eastern United States

[1] This study reports the first regional-scale assessment of aerosol effects on plant productivity and surface energy fluxes over the eastern United States. Analysis is conducted using an