Questions tagged [climate]

For questions about statistical problems encountered in climate research.

Wikipedia has an article https://en.wikipedia.org/wiki/Climatology with further references.

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Evidence for man-made global warming hits 'gold standard': how did they do this?

This message in a Reuter's article from 25.02.2019 is currently all over the news: Evidence for man-made global warming hits 'gold standard' [Scientists] said confidence that human activities were raising the heat at the Earth’s surface had reached…
Sextus Empiricus
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Similarity of two discrete fourier tranforms?

In climate modelling, you're looking for a models that can adequately portray the Earth's climate. This includes showing patterns that are semi-cyclical: things like the El Nino Southern Oscillation. But model verification occurs generally over…
naught101
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What problems should I watch out for when combining multiple time series?

Say I have a number of time series, e.g. a number of temperature records from various stations in a region. I want to get a single temperature record for the whole region with which I could describe aspects of the regional climate. The intuitive…
naught101
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Is Perkins et al.'s "skill score" an application of Bayes' theorem?

Perkins et al. (2007) introduce a "skill score" for measuring climate model output against observations. The score basically consists of measuring the overlap between probability density functions of the model (m), and the observations (o); for some…
naught101
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Are Lyapovov exponents related to statistical precision?

In my understanding, Lyapunov exponents measure the average rate of separation of near-identical chaotic trajectories, while statistical precision, in the context of a predictive model, is a measure of a spread of projections, taking into account…
naught101
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Predictions of a monthly temperature time series: adding noise to the predicted values

I am doing predictions on monthly temperature data for 100 years, from 1901 to 2000 (i.e 1200 data points). I want to know if the method I follow is correct because in my output, I do not see the requisite "randomness" of temperature being…
avg
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How to measure similarity/agreement between two temperature time series?

I am developing an application to compare temperatures from two locations, in the same span of time. For example, temperature is measured every hour for three months straight in two different cities. What would be a good way to compare these two…
romin21
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Which correlation test should I use? ANOVA? PCA? Other?

I have the following problem and some help would be wonderful. I have 50 origins for tree seeds. Each origin has several recorded climate variables like average temperature, precipitaion, wind etc. After a few years of experienting I have an…
Dan
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Regression and ANOVA for multiple site comparison of weather data?

I have already asked a similar question in the past and received the advice to ask more specific in the 'ANOVA community'. My experimental design looks like this: Temperature is measured at several sites over a period of six month each year. Each…
Timo
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Relationship between dependent and independent variables

I tried to develop an empirical equation by using multiple regression analysis. In my case I use aerosol as dependent variables and relative humidity and winds components ($U$ and $V$) as independent variables. Before developing an equation, I have…
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Guess the distribution for the precipitation and temperature over time

I am studying the data obtained from 370 weather stations distributed worldwide. I have one measure of minimum temperature and precipitations per day from 1980 to 2012. I have plotted the data, these are the histograms: I would like to know the…
D1X
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What exactly is the name of the type of regression analysis where you try to see if the model is significant over *multiple* start/end values?

An example is here: http://www.reddit.com/r/askscience/comments/ine4x/regarding_the_recent_lapse_of_global_warming_in/c2554al I'm sure it's related to robust statistics. But I'm sure that there's a label more specific than that. == Okay, so I tried…
InquilineKea
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Clustering on structural variables?

I'm working with land surface models. These models basically take a bunch of meteorological forcing data (downward radiation, wind, rain, humidity, etc), and run it through some biogeochemical/physical equations, and spit out a bunch of output data…
naught101
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Does a low R-squared value in climate temp data mean that it can't be used to prove climate change?

I have this climate data, it has a low r-squared number - does that mean it fails to demonstrate climate change?
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how to impute missing monthly climate data using AMELIA package?

I have been trying to impute future monthly climate data based on sets of downscaled data using the AMELIA package. I have monthly precipitation data from 1960-2099 for different geographic regions and I want to impute precipitation data from…
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