Sentences with phrase «sst bias correction»

As for the issue of the SST bias correction applied to HadSST2 (which forms the marine component of HadCRUT) Rayner et al (2006) themselves admit that the bias correction is incorrect.

So, the next step will be to revisit the SST bias corrections and refine them, making use of the new information uncovered concerning national measurement practices and new analysis techniques that allow for more accurate corrections in areas and at times where there are few data.

We add independent uncertainties due to urbanisation, changing land - based observing practices and SST bias corrections.

Not exact matches

This would imply that the last few years in ths SST record is biased a little low — but as I said also, it's probably best to wait and see how this plays out when all the new corrections are made.

The relevant passage from Karl et al seems to be: «In essence, the bias correction involved calculating the average difference between collocated buoy and ship SSTs.

Because GISTEMP, NCDC and HadCRUT3 are all using current generation SST datasets, and HadCRUT4 is using a next generation SST product with additional bias corrections.

These changes have resulted in a time - dependent bias in the global SST record, and various corrections have been developed to account for the bias (18).

In essence, the bias correction involved calculating the average difference between collocated buoy and ship SSTs.

al. 2007 made no recommendations as to how an overall bias correction should be made, but did point out the difficulties of normalizing SST, wind speed, temp, barometric pressure, etc..

Most satellite measurements of sea surface temperature (SST) also need bias correction and there are subtle differences between ship and buoy measurements of SST.

The bias correction procedure was changed and this resulted in different SST anomalies and different trends during the last 15 + years relative to ERSST version 3.

Given that biases in buckets measurements depend on the air - sea temperature difference any more detailed corrections would involve using both MAT and SST together.

When Folland and Parker's correction is adopted to the historical SST data, the systematic biases in monthly mean SST anomalies have been corrected almost perfectly at three stations, and the biases at the other two stations have been reduced by 40 - 50 %.»

A bias correction method will be used to provide the bulk SST.

a Uncertainties (2 sigma) du to: data gaps and random errors estimated by RSOA (heavy solid); SST bias - corrections (heavy dashes); urbanisation (light dashes); changes in thermometer exposures on LAT (light solid).

Table 2.2 shows linear trends of the annual optimum averages, and twice their standard errors, for the globe and hemispheres using the restricted maximum likelihood method as in Table 2.1 and allowing for the annual uncertainties due to data gaps, urbanisation over land, and bias corrections to SST.

However unlike the Jones et al. estimates of uncertainty, the optimum average also includes uncertainties in bias corrections to SST up to 1941 (Folland and Parker, 1995) and the uncertainties (as included in Figure 2.1) in the land data component that are due to urbanisation.