Sentences with phrase «data on albedo»

«The unmanned SRB buoy we built made it possible for the first time to generate continuous data on albedo and other properties of sea ice over a long period,» says Dr Gerland.

«Because access to the Arctic is so difficult, there is not much reliable data on albedo there,» explains Sebastian Gerland, who headed the AMORA project and is a research scientist at the Norwegian Polar Institute.

Not exact matches

Evaluating land surface albedo estimation from Landsat MSS, TM, ETM +, and OLI data based on the unified direct estimation approach Dating: Dating, in geology, determining a chronology or calendar of events in the history of Earth, using to a large degree the evidence of organic

Perhaps you might want to read that paper as well as «Climate Change and Trace Gases», available in many places, which argues for an albedo flip mechanism and (relatively) short timescales for icesheet response to forcing, based on paleo data.

The mechanism by which the effect of oceanic variability over time is transferred to the atmosphere involves evaporation, conduction, convection, clouds and rainfall the significance of which has to date been almost entirely ignored due to the absence of the necessary data especially as regards the effect of cloudiness changes on global albedo and thus the amount of solar energy able to enter the oceans.

Six Chinese scientists used remotely - sensed imaging data, including leaf area index (LAI), normalized difference vegetation index (NDVI), an enhanced vegetation index (EVI), gross primary production (GPP) and net primary production (NPP), coupled with other data (temperature, soil moisture, evapotranspiration, albedo and wind) over the period 2003 to 2014 to analyze the effects of a wind farm on summer vegetative growth in a region of northern China.

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.

The problem with sensitivity estimates based on ancient data is the great uncertainty of the input data (solar activity, land albedo, etc), which creates very fuzzy numbers.

There may have been albedo feedbacks in the Holocene but it is not something on which there is fine scaled data.»

The net impact on temperature attributed to each different forcing, solar, ghg (co2, methane), volcanic, aerosol, albedo whatever are based on historical temp data and checked for accuracy against models yes?

This is based primarily on the huge earthshine - derived albedo increase in 2003, which the authors now admit may be caused by undersampling of the data but was the the highlight of the authors» recent Science paper (Palle et al, 2004).

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.

Back on Feb 1, I blogged on this EOS issue, (Blog whoring: http://tinyurl.com/mymyz) There may be a way to get better whole Earth albedo data (see link).

The problem is that we don't actually have much data on OLR or albedo for that matter.

This study uses satellite radiation budget measurements along with satellite microwave sea ice data to document the Arctic - wide decrease in planetary albedo and its amplifying effect on the warming.

Perovich has done lots of data collection which shows the effects of surface melt ponds on albedo, as also shown by Pistone et al. in figure 3 of their recent PNAS paper: «Observational determination of albedo decrease caused by vanishing Arctic sea ice».

From what I've read Big Bear observatory has data demonstrating that albedo is variable even on the scale of decades using a technique conceived of by DaVinci.