Questions tagged [climate]

For questions related to climate data or analysis, such as precipitation or temperature.

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11
votes
4answers
7k views

How to interpolate temperature correctly?

I tried to interpolate the mean average annual temperature to produce a "realistic" surface. In QGIS I used Raster-Interpolation-Interpolation. Both methods TIN and IDW did not deliver a "realistic" ...
10
votes
1answer
13k views

How to use R to extract data from WorldClim?

I have a data set with 1000 different latitudes-longitudes. I wish to extract average annual temperature and annual precipitation for each of these coordinates. These data can easily be obtained from ...
8
votes
5answers
388 views

Is there a climatic geo portal for every point in the world?

I'm looking for a geo portal or climate database that provides me with the daily climatic information like temperature, precipitation and humidity. Forecast data is not of my interest. I need ...
8
votes
1answer
267 views

Getting monthly weather means for future climates?

I am trying to generate spatially downscaled (5-10 arcminutes) future climate maps indicating monthly mean min and max temp, and precip. Most people usually need to extrapolate monthly data into ...
7
votes
4answers
148 views

Identifying geographies that match certain climatic profiles through GIS

The long and short of this research is trying to find roads that lie within geographic areas that fit a given climatic profile. In this case, I need to find areas within the United States with ...
7
votes
1answer
735 views

Spatial interpolation of 30 weather stations to other areas

I have monthly (and sometimes daily) data on temperatures from about 30 Swedish weather stations in the mid-19th century that I want interpolate to the whole country. I'm using ArcGIS and Stata. For ...
7
votes
1answer
404 views

Interpolating Daily Values from Monthly Grids using QGIS?

I am currently performing a bioclimatic analysis using monthly averaged climate grids. One particular calculation, Growing Degree Days, relies on daily maximum/minimum temperature and a threshold ...
6
votes
3answers
1k views

Interpolation of Three Data Points

I have three location points with weather data. It's a 10-year composite of temperature values which means I only have three values for three locations for ten years. The distance between points is ...
6
votes
2answers
2k views

Where can I find some shapefiles of global climate/climatic zones

Have been looking around a bit for a shapefile/kml/etc file of global climatic zones (as listed here: https://en.wikipedia.org/wiki/Geographical_zone) -- temperature, subtropical, tropical, etcetera. ...
6
votes
1answer
6k views

Is there a simple interface from which I can extract average summer temperature and humidity for a list of latitude and longitudes?

I am interested in finding the summer average (either climatalogical mean or for a specific year) relative humidity and temperature for a set of globally distributed latitude and longitude coordinates....
5
votes
2answers
698 views

Optimum grid/pixel size for interpolating rainfall and temperature

I have a set monthly rainfall and temperature data within an approximately 100 x 100 km study area. The sampling points are unevenly distributed within the study area. Based on a paper by Janis et. ...
5
votes
3answers
588 views

Where can I find decadal climate and ocean data for Europe?

I would like to find 'decadal' climate and ocean data for Europe that I can download and use directly in ArcGIS? Specifically, I am looking for mean annual temperature, sea surface temperature, and ...
5
votes
1answer
2k views

Calculating Topographic Exposure with ArcGIS Raster Calculator?

I need you help trying to calculate Topographic Exposure (TOPEX) on a DEM in ArcGIS. I am trying to figure out wind exposure on a DEM with 25m cells. There is a great blog post where someone explains ...
5
votes
0answers
337 views

Correctly handling climate projection data with R

EDIT: An example setup can be found here: The main file is extract_cordex.R I need to analyze climate data as part of my thesis, however I am not particularly trained in working with climate data and ...
4
votes
2answers
1k views

Defining a color ramp for temperature range & applying it to different rasters?

I'm using QGIS 2.18 (Las Palmas). I have downloaded Climate-Data from WorldClim and I would like to display all of the monthly maps within the same color scale (and I don't mean within Styles always ...
4
votes
3answers
1k views

Are there better climate data than Worldclim for Europe?

I am looking for the best available climate data in Europe. Worldclim seems to be the best source of information for global data, but I am wondering if there is a higher resolution (better than 1km ...
4
votes
1answer
582 views

Is co kriging appropriate for interpolation of three spatial co variates?

I want to estimate an interpolation model(s) for daily minimum temperature, daily maximum temperature and daily rainfall. I have samples of approximately the same size for all three variables at ...
3
votes
4answers
2k views

climatic data from MODIS or other sources [closed]

I'm looking for climatic information in the form of raster like MODIS daily LST (Land Surface Temperature) data. I'm looking for other parameters like precipitation, humidity, air pressure and so on. ...
3
votes
2answers
5k views

Acquiring global wind data?

Where can I acquire global wind (speed and direction) data? Preferably in some kind of GIS format and free of charge.
3
votes
1answer
661 views

Spatially merging NetCDF climate grids?

I'm currently working with a large number of CF-compliant NetCDF climate grids with global coverage that are organized as tiles across a file structure pertaining to particular "variables" and "years" ...
3
votes
1answer
60 views

Changing climate grid values by adding decimal point numbers

I have climate grids (based on climate data from 1961-1991) which I have converted from ascii to raster in ArcGis 10.2.2. The temperature is in degrees celsius. I want to alter the temperature values ...
3
votes
1answer
119 views

How to fetch polygons with top n highest temperature record in multi-layer raster data in R (with reproducible data)?

I have raster gridded data of Germany historical daily temperature observation (15 years' historical daily mean temperature observation) in RasterBrick object. Here is how my raster gridded data look ...
3
votes
1answer
130 views

What is a valid way of calculating (bioclimatic) variables from climate data in terms of downscaling?

I have average monthly values of minimum and maximum temperature and precipitation and I want to calculate the bioclimatic variables analogue to WorldClim. I also do statistical downscaling with ...
3
votes
3answers
411 views

Statistical Analysis of Climate Data

I am doing a study on how a changing climate is influencing the spread of an invasive species of moth. I have climate data in the netCDF format which I have made into both rasters and point ...
3
votes
2answers
2k views

Problems in making CLM files with DIVA-GIS

I am fairly new to GIS softwares and this will be my first post here. I'm working with DIVA-GIS and was redirected here. I hope this is the correct place. I am doing a research which involves ...
2
votes
1answer
1k views

Kriging inside a PostGIS database?

I use a PostGIS database with temperature data. I want to use a spatial interpolation method but not the supported IDW method. I need to use kriging, but it is not part of the supported interpolation ...
2
votes
1answer
3k views

Exporting climatic tabular data stored in TIF file into CSV

I have a TIF file containing tabular climatic data, described here, which I am trying to export to spreadsheet / CSV format: http://www.helioclim.org/linke/linke_helioserve.html In summary, it is a ...
2
votes
1answer
824 views

Programs/ languages to process netcdf files “fast”

I am using R to loop through thousands of NetCDF files (downscaled climate data), and while I am able to do it using R, the code is too slow. I am looking for a way to speed it up and to maintain ...
2
votes
1answer
170 views

Is elevation (height relative to sea level) constant, despite sea level rising?

Is a 10,000' peak still a 10,000' peak if sea levels have risen a foot? Is it a 9,999' peak now, or is elevation just a constant? Seems odd that a patch of land a few feet above "sea level" could sit ...
2
votes
1answer
85 views

Spatial resolution for Bioclim datasets

I am new in using Bioclim datasets. I want to model future spread of Prosopis juliflora using landsat 30m. I want to add other datasets like temperature, ppt, elevation, soil moisture, pH, etc. Any ...
2
votes
2answers
498 views

Temperature data for Africa

Where can I find daily minimum / maximum temperature for Africa, possibly in a raster format?
2
votes
1answer
844 views

Same extent and resolution of rasters, but different number of cells

Based on Unable to writeRaster for signature "rasterPCA", "character", I obtained two rasters that are PC1 and PC2 of a bunch of climatic variables. However, irrespective of having ...
2
votes
1answer
439 views

Google Earth Engine - NASA/NEX Climate Data

I am working with the NASA/NEX-DCP30 downscaled climate data. Ideally, I would like to set a threshold for two bands - pr (precipitation) and tasmax (maximum temperature) and filter it to display ...
2
votes
1answer
34 views

Presenting climate data over time?

I'm trying to map (using ArcMap 10.6.1) some climate change data and I'm not entirely sure how to classify the raster datasets. For this work I am focusing on four different climate change scenarios: ...
2
votes
1answer
259 views

Koppen-Geiger climate classification in R

Are you aware of any R library that does the Koppen-Geiger climate classification, once the necessary input gridded (rasters, netcdf etc.) data are provided?
2
votes
1answer
681 views

WorldClim 2.0 Solar Radiation data

I am trying to get Solar Radiation data from WorldClim version 2.0 in R, However, I am using the library raster in R but it seems to not be possible to download this data. (since there is only ...
2
votes
1answer
69 views

How to derive rasters with the annual maximum precipitation values from a NetCDF layer spanning multiple years?

I have a NetCDF file of total monthly precipitation (precip.mon.total.v7.nc) spanning from 1901-2013 downloaded from https://www.esrl.noaa.gov/psd/data/gridded/data.gpcc.html and I need to derive the ...
2
votes
1answer
977 views

What methodology is used to quantify global warming?

This article in the LA Times says: The first detailed global temperature measurements were recorded in 1880. Since then, nine of the 10 warmest years on record have occurred since 2002, according ...
2
votes
1answer
108 views

Global temperature maps

Does anyone please knows where to get global surface temperature maps, yearly? I need separate map for each year from 2002 to 2012 shows the average surface temperature over the globe, would be great ...
2
votes
1answer
375 views

Using netCDF4 Python climate algorithm?

I have been working in Python with the Acaconda Python distribution to create code that accomplishes the following algorithm: I have multiple variable netCDF4 files [NCEP Reanalysis tmax(K), tmin(K), ...
2
votes
1answer
568 views

Using the same mask on two rasters, but I get different extents in R

I loaded a shapefile in R, and cropped and masked it with the same mask, but I get different extents. Any suggestions? Code below: library(raster) library(rgdal) library(GISTools) library(sp) ...
1
vote
1answer
259 views

Reading d NetCDF4 format climate data observation in R?

I downloaded yearly Temp/Precip observation by the globe from here: Free open source climate data archive, and I download those for my research case: Terrestrial Air Temperature: 1900-2014 Gridded ...
1
vote
2answers
73 views

incomplete netcdf files from OpenNex PlanetOS web

I've been trying to download netcdf files of the NASA NEX-GDDP downscaled GCMs dataset from http://opennex.planetos.com/ website. Right now I'm trying to download 7 GCMs historical/projected data for ...
1
vote
4answers
300 views

Source for wind energy potential for India in GIS format

I am looking for wind energy data (they can be wind speed at any height or wind energy potential) for India in a GIS format. Like the data displayed the link below: http://www.arcgis.com/apps/...
1
vote
1answer
241 views

Extracting Netcdf climate data for multiple locations at different times using R?

I have daily sea surface temperature and air temperature data from 1980 to 2018. How do I extract values for multiple (up to 100) specific locations at different dates in one go to csv. Right now I ...
1
vote
1answer
136 views

retrieving all coordinates of gridded temperature data with its metadata that falls in Germany' polygon?

I have yearly gridded temperature observation for all countries, and I picked up recent 35 years' data for climate research. However, in original data, yearly temperature observation has been stored ...
1
vote
1answer
35 views

Opening .clim file with QGIS

I downloaded data from http://climate.geog.udel.edu/~climate/html_pages/download.html in order to retrieve temperature and precipitation data. What I actually want is mean temperature and ...
1
vote
2answers
110 views

Interpreting GLDAS 2.1 precipitation data

I am trying to use the GLDAS 2.1 3-hourly precipitation datasets available at: The dataset is documented here: https://hydro1.gesdisc.eosdis.nasa.gov/data/GLDAS/README_GLDAS2.pdf The data is ...
1
vote
1answer
76 views

worldclim: “Current conditions (interpolations of observed data, representative of 1960-1990)”

I am interested in work with climate data since 2012, I found it in http://www.worldclim.org/version1, but there is something draws my attention: There it says: "Current conditions (interpolations ...
1
vote
3answers
75 views

Current Global Climate Dataset

I am looking for gridded Current Global Climate Datasets (Mean Temperature and Precipitation) at 30 second resolution? Can anyone guide me to get it.?