Sentences with phrase «from observational records»

Over land, values of the relative humidity of surface air are determined quite directly from observational records for regions where plentiful observations of surface air humidity were made.

I've already clearly explained above that one can not diagnose the «AMO» signal directly from the observational record because any attempt to do from actual surface observations suffers from the trend contamination problem.

Andy (or anyone else with full access)-- The abstract states that «Inferences from the observational record... indicate that models underestimate some of the changes in the hydrological cycle.»

These estimates are generally model - based because of difficulties in obtaining reliable internal variability estimates from the observational record on the spatial and temporal scales considered in detection studies.

The predicted hot - spot is entirely absent from the observational record.

The models, in response to CO2, predict a distinctive temperature profile in the atmosphere, which is totally absent from the observational record.

Reliable assessments of these contributing factors depend critically on reliable estimations of natural climate variability, either from the observational record or from coupled climate model simulations without anthropogenic forcings.

the data in such a way as to remove the so - called «pause» from the observational record (8).

Not exact matches

The researchers relied on observational data sets from citizen scientists, people without the qualifications to be a scientist who have chosen to observe and record patterns in nature.

Co-author of the study Professor Ian Hall, from the School of Earth and Ocean Sciences, said: «Our results highlight the challenge of basing our understanding of the climate system on generally short observational records.

Co-author Nerilie Abram, from the Australian National University, said: «In order to better understand climate change in Antarctica, we need continued climate measurements in the Antarctic and Southern Ocean, and extension of these short observational records with past climate reconstructions and climate modelling.»

Breakthrough Listen allotted tens of hours of observational time on the Green Bank Telescope to recording radio emissions from FRB 121102, and last August 26 detected 15 bursts over a relatively short period of five hours.

But from an email conversation with Francis, Vavrus, and several other atmospheric scientists this week, it became clear that there may be more questions than answers at this point, given the large amount of natural variability that affects winter weather patterns, and the very short observational record of how the atmosphere responded to extreme losses of sea ice (only five winters of records since 2007).

reconstructing sea - level and ice - sheet changes on timescales ranging from the 20th century, to the late Holocene, to the last 150 thousand years, through statistical and geophysical modeling of geological and observational records;

There is no narration in Paolo Brunatto's observational «Bernardo Bertolucci's Chinese Adventure,» a behind - the - scenes look at the process of filmmaking, from on - set preparations and direction to editing to Ryuchi Sakamoto recording the score.

The relatively low prevalence of recorded diagnoses of BOAS and other respiratory problems in the current primary - care population using a retrospective observational study design is in sharp contrast with the findings from some other prospective clinical studies.

Her subject matter is sourced from found objects and images chosen for shape, as well as the surrounding environment which is recorded through observational drawing and photography.

With the availability of multiple years of data from new and improved passive instruments launched as part of the Earth Observing System (EOS) and active instruments belonging to the A-Train constellation (L'Ecuyer and Jiang 2010), a more complete observational record of ERB variations and the underlying processes is now possible.

Mike's work, like that of previous award winners, is diverse, and includes pioneering and highly cited work in time series analysis (an elegant use of Thomson's multitaper spectral analysis approach to detect spatiotemporal oscillations in the climate record and methods for smoothing temporal data), decadal climate variability (the term «Atlantic Multidecadal Oscillation» or «AMO» was coined by Mike in an interview with Science's Richard Kerr about a paper he had published with Tom Delworth of GFDL showing evidence in both climate model simulations and observational data for a 50 - 70 year oscillation in the climate system; significantly Mike also published work with Kerry Emanuel in 2006 showing that the AMO concept has been overstated as regards its role in 20th century tropical Atlantic SST changes, a finding recently reaffirmed by a study published in Nature), in showing how changes in radiative forcing from volcanoes can affect ENSO, in examining the role of solar variations in explaining the pattern of the Medieval Climate Anomaly and Little Ice Age, the relationship between the climate changes of past centuries and phenomena such as Atlantic tropical cyclones and global sea level, and even a bit of work in atmospheric chemistry (an analysis of beryllium - 7 measurements).

The Global Biodiversity Information Facility (GBIF) is the world's premiere source for information on biological specimen and observational data, providing on - line access to more than 300 million data records from around the world.

Internal variability as estimated from observations can't explain sea - ice loss Superposition of a linear trend and internal variability explains sea - ice loss Observational sea - ice record shows no signs of self - acceleration

A typo in mine at # 25 is where 40,000 m3 should read 400,000 m3, and an addendum is the reference for the forcing from the Albedo Loss feedback shown in the satellite record: «Observational determination of albedo decrease caused by vanishing Arctic sea ice» See: http://eisenman.ucsd.edu/publications/Pistone-Eisenman-Ramanathan-2014.pdf

However, during the mid-2000s, with several fewer years in the observational record, the trend in Antarctic sea ice extent was reported to be considerably smaller and statistically indistinguishable from zero.

And I'd have to say that if I have to save my life by winning an argument with oil men in a bar in Midland, Tex., on this topic, I would go in with some lumps of black mudstone from the ancient rock record, I'd go in with the established figures on our present input of carbon dioxide, and I'd say which bit of this observational science do you guys quarrel with, and why?

The attribution calculation in the IPCC AR5 is based on fingerprint studies, where the spatial patterns of the temperature response of the climate models to various agents are scaled to best reconstruct the temperature record from observational constraints.

From 2012 to 2016, California experienced one of the worst droughts since the start of observational records.

Steve, you write «c) The observational record is still too short to constrain climate sensitivity (in part because of lack of knowledge about some of the forcings), so weakening evidence from this record doesn't change the result.»

While the statistics of 30 - year (or longer) NAO trends and associated surface climate impacts can not be reliably determined from the short observational record, we have made use of a simple relationship between the statistics of trends of any length and the statistics of the interannual variability, provided the time series is Gaussian (Thompson et al. 2015).

The observational record, which of course was affected by these other variables, showed a greater divergence from a smooth curve during some intervals, but the difference from the simulations was not extreme.

The bias in the other versions of the global temperature record due to change in observational platforms can be estimated from the difference between the raw and adjusted HadSST3 data, and is shown in Figure 2.

For such empirical forecasts regionally depth - dependent damping rates \ (\ lambda (x, y, z) \) could be derived from the lag - 1 autocorrelation of long term observational records of water storage and soil moisture.

But from an email conversation with Francis, Vavrus, and several other atmospheric scientists this week, it became clear that there may be more questions than answers at this point, given the large amount of natural variability that affects winter weather patterns, and the very short observational record of how the atmosphere responded to extreme losses of sea ice (only five winters of records since 2007).

Attempts to understand trans - basin AMOC variability over the modern observational record traditionally have had to rely on indirect estimates assessed from hydrography.

Observational data and paleoclimatologic records confirm the significant changes in pH and carbonate that come from increased CO2 as a consequence of the equilibria among CO2, H2CO3, HCO3 -, and CO3 ---.

For national extremes reported from local meso - networks, the team should include the mesonet service technician, head of the mesonet, the local NWS Cooperative Program Manager, instrument and observational procedure specialists from NWS headquarters, and state climatologists or RCC representatives covering the state with the current extreme record and potential record.

While its not entirely fair to remove a modeled event from the record, it's also not at all fair to compare skill over such a short time frame, when volcanic and other effectively random events can skew either path (observational or modeled) so greatly.

A study of observational data sets from the World Glacier Monitoring Service (WGMS) concluded that «rates of early 21st - century mass loss are without precedent on a global scale, at least for the time period observed and probably also for recorded history» (Zemp et al. 2015).

I'd even propose a totally selfless design that takes the point of view of a scientist 20 year from now who, endowed with 20 years of observational records, looks back and says, «I wish those 2008 simulations had tried to do this and that; I could assess them now and use the validation to learn what that modeled process is really worth.»

Pepijn Bakker and colleagues combine observational records of iceberg - rafted debris with climate models to show that the climate fluctuations seen during the Holocene may have been driven by small variations in the discharge of freshwater from the Antarctic Ice Sheet, amplified through the climate system.