Climate scenarios based on model estimates of future climate can be constructed either by adopting the direct model outputs or by combining model estimates of the changed climate with
observational climate data.
A further attraction of using 1961 to 1990 is that
observational climate data coverage and availability are generally better for this period compared to earlier ones.
A comparison of the changes and fluctuations in the three
observational climate indicators (SLR, OHC, and GMST; Figure 2) clearly shows that both OHC and SLR are much better indicators of global warming than GMST.
As mentioned above, climate scenarios that are developed for impacts applications usually require that some estimate of climate change be combined with
baseline observational climate data, and the demand for more complete and sophisticated observational data sets of climate has grown in recent years.
Research by tree - ring scientist Laia Andreu - Hayles will provide much -
needed observational climate data for Bolivia and Peru and insight into the climate sensitivity of tropical tree species in the Andes.
The Bureau's use of statistical tests that are most likely to identify artificial discontinuities in the temperature data, and how they should be applied, are informed by well - established studies
on observational climate data.
Earlier in my career I worked on climate change and desertification in Africa, the development of global and
national observational climate data sets and the evaluation of climate models.
The International Climate Agency (ICA) would be staffed by around 200 fulltime scientists who would be independent of government, industry and academia, says Zorita, and would be responsible for several key issues: streamlining biennial state - of - the - climate reports; acting as a repository and quality - controller
of observational climate data; advising governments on regional assessments of climate impacts; and coordinating the suite of future - climate simulations by research institutes.
I am a climate scientist and have spent much of my career with my head buried in climate model output and
observational climate data, trying to tease out the signal of human - caused climate change.
Climate models typically do not use
any observational climate data such as surface temperature observations.