Sentences with phrase «giss urban adjustments»

Since the GISS urban adjustments are made with reference to rural stations surrounding around Kathmandu, the adjustment is HIGHLY DEPENDENT on whether regional rural stations are warming.

Similarly, its notable that the GISS urban adjustments (via nightlights) don't appear to have a large impact vis - a-vis the unadjusted data, a point that others have previously made.

Not exact matches

NASA GISS obtain much of their temperature data from the NOAA who adjust the data to filter out primarily time - of - observation bias (although their corrections also include inhomogeneities and urban warming - more on NOAA adjustments).

The GISS adjustments consist of data quality control and a homogeneity adjustment applied to urban stations.

The urban adjustment is improved in the current GISS analysis.

The current GISS analysis also uses satellite measurements of nightlights to identify urban areas and remote stations in the United States (and southern Canada and northern Mexico); only «unlit» stations are used to define homogeneity adjustments.

GISS Step 2 makes the urban adjustment based on rural stations within 500 km of the urban station.

Other groups like NASA Goddard Institute for Space Studies (GISS) and the Climate Research Unit at the University of East Anglia (CRU) take data from NCDC and other sources and perform additional adjustments, like GISS's nightlight - based urban heat island corrections.

Tony Heller has done an excellent job documenting the GISS temperature fraud, dropped rural versus urban stations, dropped North latitude stations versus South, same for elevation, completely made up data where no thermometers exit (vast parts of Africa, North Poles for early dates), Tobs adjustments, need to go on?

It seems GISS haven't heard about thin cloud, varying water vapour, dust and aerosols, which reduce the apparent brightness of urban sites, which GISS uses to estimate population density for the adjustments.

GISS does make an adjustment to deal with potential artifacts associated with urban heat islands, whereby the long - term regional trend derived from rural stations is used instead of the trends from urban centers in the analysis.