Questions tagged [data-analysis]
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64
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Bias correction of CMIP6 projections
Is it always mandatory to perform a bias correction when working with CMIP6 climate projections?
I am working with multiple climate projections from CMPI6 and I'm not sure if this step is necessary, ...
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0
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31
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Origin of dislocations in FAO data between 1991 and 1992 (via World Bank)?
I have been inspecting the World Bank database, including development indicators based on FAO data. For some of these indicators, for instance "Permanent cropland (% of land area)" and "...
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1
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Identifying continuously-recording seismic stations
I am trying to identify which stations within the NCEDC network are continuously recording ground motion, and which record only intermittently. I am using obspy's ...
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0
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38
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How to calculate seasonal component from weekly data using dataframepython?
Below is my dataframe
I want to calculate the climatological monthly average, the total average for each month.
For example, when I use groupby to estimate the monthly average of the variable AREA as ...
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0
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Necessity of demean/detrend before low/high pass filter
I am curious about the necessity of demean/detrend before low/high pass filter.
I have seismic data which had been processed by cross correlation or other things. I want to use low pass filter for the ...
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2
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1
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320
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How to calculate wet bulb globe temperature (WBGT) using only temperature and humidity?
Greetings fellow scholars,
I'm trying to answer the question above because I've come across WBGT calculators like this one (https://www.climatechip.org/heat-stress-index-calculation) and I don't ...
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20
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Is This Portion of the West Antarctic Ice Sheet Divide a Good Representation of Parallel Sided Slab on Slope Glacier
I'm trying to find data that I can use to compare to the graph in Figure 6.2 on page 88 of this source which shows temperature (found from solving the parallel sided slab on slope problem) vs height ...
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1
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249
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What is this error regarding easting and northing of ground control points?
*I want to understand what would it mean by easting of ground control points (GCP), and what would it mean to have rmse of x m with a minimum of a m.
The average root mean square errors (RMSE) in the ...
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35
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Which atmospheric parameters will give accurate result of electricity consumption of an area by using multiple regression model?
I have a dataset that gives values of
temperature,
Relative humidity
Geopotential
Ozone mass mixing ratio
Potential vorticity
Fraction of cloud cover
Specific cloud ice water content
Specific cloud
...
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2
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0
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How well can they localize the sources of these marsquakes using only a single seismometer? Does being in the shadow zone of the core help or hinder?
Phys.org's April 23, 2022 Two largest marsquakes to date recorded from planet's far side links to The Far Side of Mars: Two Distant Marsquakes Detected by InSight which contains the image below.
...
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How to calculate Ocean heat content?
I have subsurface temperature data for up to 300 m oceanic depth (at varying depth intervals). I want to calculate the ocean heat content for 0-300 m.
The formula is:
OHC = seawater density * Specific ...
- 61
1
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1
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97
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Meterological measures -formula containing temperature, humidity, cloud, wind
I am looking for a meteorological measure (formula) of something which combines 2 or more of the following:
temperature,
humidity,
cloud,
wind,
precipitation,
UV
I have searched, and for example, ...
- 11
3
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0
answers
53
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How does the lack of data about the Mesosphere affect our predictive knowledge of the atmosphere?
Out of all the layers of the Earth's atmosphere the Mesosphere is the hardest to collect data and experiment on, due to it's density being too much for satellites and too little for aircraft or ...
- 271
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What is the best way to check for technical validity of climate data?
I processed a lot of modeled climate data from CMIP and I want to check that I have not made any errors. I think the best way to do this is to somehow evaluate the data I produced geographically ...
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36
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From ice core analysis to temperature curves
In ice cores a lot of data are measured and analyzed and can be plotted versus depth, for example
age of layers
thickness of layers
concentration of spurious gases
concentration of solids
delta ...
4
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1
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327
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How do I find the Datum (Diurnal Correction) number for a Magnetometer
I’m a new prospector who was given the task of learning a GEM GSM-19T Proton Magnetometer. I’ve learned how to set it up, take base readings, and take walking surveys. However when setting up a base ...
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1
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Is there a global map of wind design loads or wind gust climatology?
I'm looking for a world map of wind gust climatology data, with the specific purpose of being used for coarse comparison of building design loads, with a consistent metric regardless of location.
...
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71
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Quality control in Seismic Acquisition - shot offset shift
I have a problem with seismic data where the minimum offset of the shot is not centered at the nearest receiver, this shift can be for 3 traces 2 or one and maybe more in the two sides !!
So is there ...
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2
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303
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Does the Earth produces measurable gravity waves?
Does the Earth exhibit measurable gravity waves? Note: I'm not asking about gravitational waves.
Some recent experiments looking at low-frequency (3$\times 10^{-5}$Hz) accelerometer data are showing ...
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2
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179
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What is the correct way to report historical daily Max / Min / Avg Temperature by City?
I starting a weather project where I'm using ERA5 hourly dataset (ref: https://cds.climate.copernicus.eu/cdsapp#!/dataset/reanalysis-era5-single-levels?tab=form). Using this dataset in python, I have ...
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48
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Prevalence of 'well-rounded' beach fabric on the Foreshore
Apologies for the vagueness of this query, but generally, would it be plausible to state that the prevalence of 'sub-rounded'* beach fabric is more common at the foreshore than 'sub-angular'* beach ...
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4
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2
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68
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Comparing 2D fields - how do you quantify similarity?
I have a number of arrays describing both forecasts and observations of geospatial data (e.g. precipitation intensity, cloud fields...). Included are four animated gifs, each looping back and forth ...
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How to efficiently estimate merchentable volume for timber inventory using species, DBH, and merchentable heights?
I am trying to estimate wood volume for forest stands I have field-inventoried using a variable plot sample method, measuring species, DBH, and height of each tree counted 'in' using a BAF-10 prism. ...
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1
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57
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Is there a name for a type of algorithm or processing which uses only one source of data as input?
Many algorithms in remote sensing take one or more different datasets as inputs and return some output. An example might be computing the amount of sulfur dioxide (SO2) injected into the stratosphere ...
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0
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37
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Broadband Albedo Conversion Scheme
I had this albedo conversion written down:
$$\alpha = 0.53\alpha_{VIS}+0.47\alpha_{NIR}$$
I had on my notes that this equation was form Collins et al (2002).
However, I cannot find where this came ...
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0
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200
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Beam forming FK analysis of a seismic wave
So after reading alot of literature on source localization, I found out that FK analysis is one of the most widely used methods to determine source location without explicitly calculating the ...
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27
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What software libraries, tools or frameworks do you use for turning tabular sensor data from the field into cleaned data files
Cleaning data and turning it into a useable format that can be integrated with other datasets is a time-consuming task that earth scientists face when using sensor data. Most sensors output data in a ...
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145
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Seeking climate and related sciences textbook recommendations
I will be starting a Master's program in data science soon and my eventual hope/goal is to do climate-related data science work. I did an independent study for one semester in college on the ...
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60
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SeaDataNet's NEMO software, stuck on data validation?
I'm new to the community and this is my first question, I would appreciate in advance your patience and your time to read this post.
I'm currently processing some oceanographic data such as salinity, ...
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3
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240
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stretch phenomena after NMO application on seismic data
after the NMO application we have stretch for far offset , i read a lot of articles but i can't have a complete idea how this phenomena is really created ! any one have a rich explanation ?
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1
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495
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ECMWF vs NOAA forecast data accuracy
I'm a novice software developer who's about to write some Python scripts for getting weather data from several U.S. stations, as well as a few in the Pacific (for checking Southern Oscillation Index &...
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2
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234
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Local Weather Forecast (Self-Learning Algorithm)
First of all, the question! :
Is it possible to predict local weather tendencies for the upcoming hours (let's say 2-3 hours) using only local data?
If yes, which data is needed to make such ...
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111
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Complex Empirical Orthogonal Function analysis on Propagating wave
Since Complex EOF (CEOF) is doing hilbert transform before general EOF,
we can get four outputs in each mode.
Magnitude spatial pattern
Magnitude time series
Phase spatial pattern
Phase time series
...
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0
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Get NPK values of soil without spectroscopy
I stumbled upon this new device called Teralytic. Which can measure salination, NPK values and all sorts of things.
Unfortunately it's sold out and I think when it'll be available again rather ...
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1
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123
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Decomposition of variables in horizontal and vertical modes
I have a query regarding the practical applicability of variable separable method. Usually we decompose the variables w.r.t components corresponding to different dimensions, this method is used to ...
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Do any of the ECMWF ensemble forecasts have the associated true values?
I am looking for a dataset of ensemble forecasts and the associated true observed values. For example, a dataset containing $n$ ensemble forecasts of the temperature in 24 hours and the observed ...
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1
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93
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Does a climate change big data provider exist? [closed]
Does a big data provider (Like a Bloomberg, which is the world's leading financial data provider) exist which includes ALL the possible informations and parameters about climate change or in general ...
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2
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570
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How to best visualize temperature increase (due to climate change) using GHCN data?
Immediately below is an illustration of my first/prototype attempt to visualize this, which is further explained after that...
What you're looking at is a year-by-year animation of TMAX (daily max ...
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Are there resources for determining what percentage of the earth's surface is occupied by air conditioned spaces?
EDIT: My goal with this question was to better understand the impact of cooling systems on local urban environments, but its been pointed out I am asking the incorrect questions for the answer's Im ...
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35
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ALOS Palsar SLC data products for geological mapping
I have some ALOS palsar SLC data products which are downloaded from ESA database and they are processed with ESA ALOS-PALSAR IPF processor which is different from JAXA. Formerly it was not possible to ...
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Why are tropical cyclones forming earlier in the North Atlantic basin?
This tweet from Brian McNoldy includes a graph suggesting that tropical cyclones are typically getting named earlier in the year in the Atlantic:
What are the causes for this?
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What is the better way to deal the missing and negative cells of satellite snow cover data
Daily and monthly MODIS snow cover L3 data has downloaded, next to deal with missing and negative cells.
Different types of interpolation are being used to fill the missing cells. I want to fill the ...
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409
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Seismogram deconvolution in SAC
Good day! I have a problem replicating a result. Let us consider the top plot here:
On the plot, velocity is in mm/s. I think the problem is to remove instrument response correctly. I downloaded ...
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89
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How is tiltmeter data processed?
With what programs can inclinometer data be processed? And how is instrumental correction done?
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1
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243
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Best way to interpolate bathymetry with a directional component?
I have a bathymetry dataset that has a small section missing. I need to fill in this section.
The bathymetry in this region has some strongly directional features (e.g. a canyon that runs through the ...
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Issues with projection and fig using python and mpl_toolkits.basemap
I currently have depth data that I am plotting with the code below. The problem that I am having has to do with the figure python is spitting out. The figure is really tiny. I have tried a few things ...
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Should I get my master's in Environmental Science or Environmental Engineering given a Computer Science background? [closed]
I'm currently a Computer Science undergraduate at Georgia Tech. I have ~3.5 GPA, and I want to become a data scientist for the NOAA or a similar organization concerning the acidification of the oceans....
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2
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545
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correct way to calculate transport through a section in an ocean numerical model
Suppose that I want to calculate the transport across a certain transect (green line) from the outputs of an ocean numerical model. The model has the $u$ values at the center of the grids (crosses) ...
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442
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What are the advantages of analyzing temperature in Kelvin?
I have air temperature data from reanalysis that I want to analyze. The reanalysis data is in Kelvin, so I'm wondering why they use Kelvin. Is there any advantage or difference in analyzing ...
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360
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What statistical methods are best for analyzing long-term rainfall data?
What statistical tools are best analysing rainfall data (overall trends, decadal trends, intensity distribution, extremes, etc.)?
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