Sentences with phrase «precipitation by aerosols»

Not exact matches

Experiments Prather and her team conducted in California's Sierra Nevada produced the first conclusive evidence that dust aerosols can change the amount of precipitation produced by clouds.

A large portion of secondary organic aerosols - tiny particles in the air we breathe that contribute to cloud formation and precipitation - arise from a combination of man - made pollution and molecules given off by plant matter.

Reference: Jiwen Fan, Daniel Rosenfeld, Yuwei Zhang, Scott E. Giangrande, Zhanqing Li, Luiz A.T. Machado, Scot T. Martin, Yan Yang, Jian Wang, Paulo Artaxo, Henrique M.J. Barbosa, Ramon C. Braga, Jennifer M. Comstock, Zhe Feng, Wenhua Gao, Helber B. Gomes, Fan Mei, Christopher Pöhlker, Mira L. Pöhlker, Ulrich Pöschl, and Rodrigo A.F. de Souza, Substantial convection and precipitation enhancements by ultrafine aerosol particles, Science, Jan. 26, 2018, DOI: 10.1126 / science.aan8461.

A joint session dedicated to DOE ARM measurements: Observations of Aerosol / Trace Gases, Clouds, Precipitation, and Radiation from DOE Atmospheric Radiation Measurement (ARM) Climate Research Facility Part 1, Tuesday, January 24, 8:30 — 10:00 am, 4C - 4, led by Jian Wang, Brookhaven National Laboratory, Jim Mather and Jiwen Fan, both from Pacific Northwest National Laboratory

The potential risks around sulfate aerosol solar geoengineering include alteration of regional precipitation patterns, its effects on human health, and the potential damage to Earth's ozone layer by increased stratospheric sulfate particles.

I was thinking instead perhaps more easily controlled polar - orbit satellites might be used, which would rotate with some fixed ratio to their orbital period, casting greater shadows at higher latitudes... or some other arrangment... for a targetted offset polar amplification of AGW especially and in particular perhaps avoiding the reduction in precipitation that can be caused by SW - radiation - based «GE» (although aerosols that actually absorb some SW in the troposphere while shielding the surface would have the worst effect in that way, I'd think)... strategic distribution of solar shading has been suggested with precipitation effects in mind, such as here... sorry, I don't have the link (I'm sure I saved it, just as Steve Fish would suggest — but where?).

Aerosols exert a forcing on the hydrological cycle by modifying cloud condensation nuclei, ice nuclei, precipitation efficiency, and the ratio between solar direct and diffuse radiation received.

As to actual data you may want to search on the recent data regarding the surface accumulation in the Canadian and Alaskan Arctic by NASA and the NOAA US Western coastline aerosol detection stations regarding aerosol precipitation fallout being detected there.

How are soil moisture, surface fluxes, and aerosol properties altered by deep convective precipitation events and seasonal accumulation of precipitation?

This allowed the development and validation of more realistic simulations that replicated the aircraft measurements and thus quantified more reliably the entities that can not be obtained directly by the aircraft measurements to improve understanding and modeling of aerosol - cloud - precipitation interactions.

• Strong depletion of aerosols driven by precipitation losses appears to be a fundamental component of a POC.

The US SW precipitation has been dominated by oceanic influences (PDO and AMO) with no direct effect due to anthropogenic greenhouse gases and aerosols (GHGA).

However, the relative cooling effect of sulphate aerosols is dominated by the effects of increasing greenhouse gases by the end of the 21st century in the SRES marker scenarios (Figure 10.26), leading to the increased monsoon precipitation at the end of the 21st century in these scenarios (see Section 10.3.2.3).

The deployment enabled the study of how aerosol and cloud life cycles, including cloud - aerosol - precipitation interactions, are influenced by pollutant outflow from a tropical megacity.

Because of the first of these reasons, were we to abruptly halt all emissions now, the sulfate aerosols would rapidly be removed from the atmosphere by precipitation whereas the CO2 concentration would remain elevated, and so there would be a significant further warming influence just as a result of past emissions; this warming would lead to the quite significant global warming that Lindzen mentions.

On the other hand, if some of the anthropogenic aerosols act as ice nuclei, supercooled clouds could be converted into ice clouds by the glaciation indirect effect (Lohmann, 2002), resulting in more efficient precipitation formation.

This allowed the development and validation of more realistic simulations that replicated the aircraft measurements and thus quantify more reliably the entities that can not be obtained directly by the aircraft measurements to improve understanding and modeling of aerosol - cloud - precipitation interactions.

In addition to the data from the radiometers, the Berkeley Lab scientists will get supplemental data by taking advantage of a separate, in - depth DOE climate study at the same location, which is using additional instruments and a balloon - borne sounding system to get information on temperature, cloud cover, the density and types of aerosols or pollution particles, heat fluxes and other climate variables like precipitation.

Steve Ghan, from the Pacific Northwest National Laboratory, says, «This work confirms what previous cloud modelling studies had suggested: that although clouds are influenced by many factors, increasing aerosols enhances the variability of precipitation, suppressing it when precipitation is light and intensifying it when it is strong.

Studying the atmospheric aerosol particles, which impact cloud formation and particles, above a pristine forests, researchers discovered that when left alone the Amazon acts as its own «bioreactor»: clouds and precipitation are produced by the abundance of plant materials.