Sentences with phrase «measurements of albedo»

When you plot observational sea ice data to satellite measurements of albedo you should be able to verify the actual impact, thus your arguments in regard to albedo changes (or cloud cover) in time and space might be interesting but doesn't change the general assumptions, the observations.

«We used actual satellite measurements of both albedo and sea ice in the region to verify this and to quantify how much extra heat the region has absorbed due to the ice loss.

Actual measurements of Albedo are available.

In recent years, satellite measurements of albedo show little to no trend.

«We used actual satellite measurements of both albedo and sea ice in the region to verify this and to quantify how much extra heat the region has absorbed due to the ice loss.

Not exact matches

In contrast, the Scripps team opted to directly correlate albedo measurements made by NASA's CERES instrument data with observations of sea ice extent made by the Special Sensor Microwave Imager (SSM / I) radiometers aboard Defense Meteorological Satellite Program satellites.

The model variables that are evaluated against all sorts of observations and measurements range from solar radiation and precipitation rates, air and sea surface temperatures, cloud properties and distributions, winds, river runoff, ocean currents, ice cover, albedos, even the maximum soil depth reached by plant roots (seriously!).

Comparison of MODIS and MISR - derived surface albedo with in situ measurements in Greenland.

Albedo values of 0.08 come from direct satellite measurements, while your papers seem to apply to limited conditions and one looks like a hypothetical 0.2 aAlbedo values of 0.08 come from direct satellite measurements, while your papers seem to apply to limited conditions and one looks like a hypothetical 0.2 albedoalbedo.

Beyond the problems of the high margin of error of shortwave albedo measurements, and the lack of a counter-factual on precisely and accurately what albedo has been and what it would be in the absence of humans, SO2 emissions globally appear to have peaked:

Do you know where to find actual measurements of the Earth's albedo?

«Additional work that looks at albedo measurements, melting rate, and other types of reconnaissance is also needed.»

The dependence of the ECV data quality on main measurement and retrieval parameters like the solar zenith angle, ozone column amount, latitude, and cloud parameters (fractional cloud cover, cloud top height and albedo, etc. as appropriate) shall be investigated.

Interesting they both report albedo variances of 1 % which is also what Loeb reckons is the level of error on the satellites measurement.

Project Earthshine started in 1999; the Earthshine measurements can not show that the albedo of the Earth is mainly driven by the cloud coverage.

2008 G. Matthews, «Celestial body irradiance determination from an under - filled satellite radiometer: Application to albedo and thermal emission measurements of the Moon using CERES» Applied Optics.

Twohy et al. (1989) concluded from measurements off the coast of California and from simple radiative calculations that the observed levels of soot would not lead to a significant impact on the cloud albedo.

Variability of biomass burning aerosol optical characteristics in southern Africa during the SAFARI 2000 dry season campaign and a comparison of single scattering albedo estimates from radiometric measurements.

Actual instrument measurements of humidity (TIGR) and albedo (Earthshine) indicate they are not the constants they are presumed to be.

So how can we possibly start talking about anthropogenic forcings and surface temperature changes wrought by same when we don't even know to + -5 C what the average temperature of the earth should be due to our albedo measurements being so imprecise and having no bloody idea how, when, and why the earth's average albedo varies.

We have imprecise data with respect to albedo (Trenberth in his paper has albedo measurements varying between 27.1 and 35.8 % and others have it is high as 40 % and the albedo is constantly changing) and imprecise data with respect to the amount of solar energy absorbed by the atmosphere and imprecise data as to the amount of solar energy reflected by the atmosphere.

They base this claim on Earthshine data (a measurement of the glow of the dark side of the moon that they use to deduce the earth's reflectance) and on an albedo proxy derived from ISCCP parameters after they are regressed with two years of overlapping, but not global, earthshine observations.

If it is from space, it's an albedo measurement and the recovery has to do with a reduction of cloud cover to let more energy in to restore the balance, but if that's true, then the mechanism is not clear because the signal to restore is not evident in the ocean temps, at least globally.

We also need in situ measurements in the GrIS's ablation zone that can distinguish the relative contributions of different impurity types (e.g., black carbon, dust, algae) to albedo reduction as well as models that accurately simulate the GrIS surface energy balance and mass balance.