Sentences with phrase «which rainfall data»

That's because past measurements have been spotty and difficult to extrapolate across larger regions, and the period over which rainfall data have been recorded is relatively short.

Not exact matches

Researchers used two methods to track groundwater levels, traditional water balance estimates — which take into account surface water inflow like rainfall and snow melt, soil moisture capacity and evapotranspiration — and data from NASA's twin satellite system called GRACE (Gravity Recovery and Climate Experiment).

The researchers analyzed rainfall data recorded throughout Africa from 1920 to 2013 and found that the Sahara, which occupies much of the northern part of the continent, expanded by 10 percent during this period when looking at annual trends.

Colin Kelley of the University of California, Santa Barbara, and his colleagues analysed Syrian weather data since 1931, and found steadily less winter rainfall, which is crucial for crops, and higher temperatures, which dry soils faster.

«[The Nature study is] heavily smoothing the data so as to look only at centennial - scale shifts, not what we usually think of as droughts or rainfall extremes, which would be scales of days to at most a decade or two.»

The team charted trends in rainfall from 1956 to 2005 in eastern China, which has 162 weather stations that provided complete data collected over the entire 50 years.

Depending on the level of service to which an organisation subscribes, it will provide regular pdf updates, sent to a phone if required, showing forecast data for RST (road surface temperature — much more relevant than air temperature when deciding when to grit), rainfall, falling snow and road state.

My studies in 70s & 80s using rainfall data series over different parts of the globe matches the drought conditions over different parts — which was attributed to global warming by WMO and sent my response to Secretary General of WMO as those of my publications are with WMO library [book was reviewed by the Vice-President of Agrometeorology group in WMO].

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.

Our observational studies (Gray and Schwartz, 2010 and 2011) of the variations of outward radiation (IR + albedo) energy flux to space (ISCCP data) vs. tropical and global precipitation increase (from NCEP reanalysis data) indicates that there is not a reduction of global net radiation (IR + Albedo) to space which is associated with increased global or tropical - regional rainfall.

When one uses the new data to estimate the level of CO2 released for all of Indonesia in 2006 — a year with a weak El Nino, in which rainfall was relatively low — one comes up with a figure of up to 900 million tons.

In 2004, new rainfall data showed that half of the forest area of the Amazon Basin had either fallen below, or was very close to, the critical level of soil moisture below which trees begin to die (Nepstad et al. 2004).

The correlation between the rainfall threshold and increased fire activity was evident across all satellite data used in the study, which makes the threshold a useful benchmark for predicting and preparing for potential fire episodes.

One of the points on which Prof Curry and Dr. Schmidt agree is that attribution requires a comparison of the actual data (global mean temp, global mean rainfall, etc) to a model of what would have happened absent human alteration of the Earth surface and atmosphere.

The Ben Nevis weather data will tell us more about extreme rainfall which is thought to be becoming more common in the UK.

It may be an improvement on limited data but can't provide long term changes — which alone can provide limits of rainfall variability.

My goal is to justify a Levy distribution for daily rainfall totals based on some rather well - understood physics (which doesn't appear to be known by hydrologists) in order to motivate those with lotsa data to see how well the Levy distribution fits the data.

Well, it looks like the press release was carefully worded, and referring back to Anthony Watts article on his blog which is criticized at the beginning of the RC article, i see no wrong claim there... Hiss main argument is written in bold: «The IPCC is under scrutiny for various data inaccuracies, including its claim — based on a flawed World Wildlife Fund study — that up to 40 % of the Amazonian forests could react drastically and be replaced by savannas from even a slight reduction in rainfall.»

(SW England that also got heavy rain is combined within the published HadUKP data with S Wales that was less affected & which normally has high rainfalls, swamping the SW England data.)