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7 results for “BIOCLIM”

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zenodo52/100

Decadal BIOCLIM estimates based on ISIMIP3b climatic forcing data for the European continent

<p>This dataset contains BIOCLIM variables (plus huss, sfcwind, rsds) which have been prepared and calculated from the original ISIMIP3b bias-adjusted climate forcing data from 5 GCM models (obtained on 2023-08-07). <br><br>For more information on the original data and its properties, please see the ISIMIP3b modelling protocol and here specifically the climate forcing section <a href="https://protocol.isimip.org/#/ISIMIP3b/31-forcing-data" target="_blank" rel="noopener">https://protocol.isimip.org/#/ISIMIP3b/31-forcing-data</a> and <a href="https://doi.org/10.5194/gmd-17-1-2024">Frieler et al. (2024)</a>.</p> <p>The original climate forcing data (global extent, daily temporal grain) were cropped to the European extent and spatial-temporally aggregated. Here 10 year (decadal) steps were chosen as target climatology.<br><br>For each time slot (e.g. 10 years) and scenario (historical or ssps) the following 22 variables were calculated:</p> <p>bioclim01 = Annual Mean Temperature<br>bioclim02 = Mean Diurnal Range (Mean of monthly (max temp - min temp))<br>bioclim03 = Isothermality (BIO2/BIO7) (&times;100)<br>bioclim04 = Temperature Seasonality (standard deviation &times;100)<br>bioclim05 = Max Temperature of Warmest Month<br>bioclim06 = Min Temperature of Coldest Month<br>bioclim07 = Temperature Annual Range (BIO5-BIO6)<br>bioclim08 = Mean Temperature of Wettest Quarter<br>bioclim09 = Mean Temperature of Driest Quarter<br>bioclim10 = Mean Temperature of Warmest Quarter<br>bioclim11 = Mean Temperature of Coldest Quarter<br>bioclim12 = Annual Precipitation<br>bioclim13 = Precipitation of Wettest Month<br>bioclim14 = Precipitation of Driest Month<br>bioclim15 = Precipitation Seasonality (Coefficient of Variation)<br>bioclim16 = Precipitation of Wettest Quarter<br>bioclim17 = Precipitation of Driest Quarter<br>bioclim18 = Precipitation of Warmest Quarter<br>bioclim19 = Precipitation of Coldest Quarter<br>huss = Average (arithmetric mean) specific humidity<br>rsds = Average (arithmetric mean) Surface downwelling shortwave radiation<br>sfcwind = Average near-surface wind speed (arithmetric mean)<br><br>---<br><strong>Data properties:</strong></p> <table> <tbody> <tr> <td>Shared Socioeconomic Pathways (SSP)</td> <td>SSP1-2.6, SSP2-4.5, SSP3-7.0, SSP5-8.5</td> </tr> <tr> <td>General circulation models (GCMs)</td> <td>GFDL-ESM4, IPSL-CM6A-LR, MPI-ESM1-2-HR, MRI-ESM2-0, UKESM1-0-LL</td> </tr> <tr> <td>Spatial grain</td> <td>0.5 degree (~50km&sup2;)</td> </tr> <tr> <td>Geographic projection</td> <td>WGS 84</td> </tr> <tr> <td>Temporal grain</td> <td>10 year steps</td> </tr> <tr> <td>Spatial extent</td> <td>Continental Europe including Turkey (see screenshot)</td> </tr> <tr> <td>Temporal extent</td> <td>1850 to 2010 (Historical), 2010 - 2100 (Future)</td> </tr> <tr> <td>Number of variables</td> <td>22</td> </tr> </tbody> </table> <p><br>All files are provided in netCDF (nc) format. The preprocessed datasets are provided as it and the author takes no responsibility for errors or misuse.&nbsp;</p>

opencc-by-4.0Aug 2024View details →
zenodo44/100

Mean NDVI Values (1982-2018) and Future Predictions Using CHELSA Bioclim Variables for Türkiye

<p>This dataset contains mean Normalized Difference Vegetation Index (NDVI) values from 1982 to 2018 and their future predictions based on CHELSA bioclimatic variables, specifically for the region of T&uuml;rkiye. The data is provided in .asc format and includes both historical and projected NDVI values under different climate scenarios.</p> <h4>Contents:</h4> <ul> <li><strong>Historical NDVI Data (1982-2018)</strong>: Mean NDVI values derived from remote sensing data.</li> <li><strong>Future NDVI Predictions</strong>: NDVI projections for the periods 2011-2040, 2041-2070, and 2071-2100 under three Shared Socioeconomic Pathways (SSPs): SSP1-2.6, SSP3-7.0, and SSP5-8.5.</li> </ul> <h4>Methodology:</h4> <ol> <li><strong>Model Training</strong>: <ul> <li>A Random Forest Regressor was used to model the relationship between NDVI and the selected bioclim variables.</li> <li>The model achieved an R&sup2; of 0.9341, Mean Absolute Error of 0.0275, and Root Mean Squared Error of 0.0499.</li> </ul> </li> <li><strong>Future Predictions</strong>: <ul> <li>Future NDVI values were predicted using the trained model and future CHELSA bioclim projections.</li> <li>Predictions were made for three future periods (2011-2040, 2041-2070, 2071-2100) under three SSPs (SSP1-2.6, SSP3-7.0, SSP5-8.5).</li> </ul> </li> </ol> <h4>Data Specifications:</h4> <ul> <li><strong>Extent</strong>: Covers the geographical area of T&uuml;rkiye and adjacents.</li> </ul> <h4>Sources:</h4> <ul> <li><strong>NDVI Data</strong>: <ul> <li>Ma, Z., Dong, C., Lin, K., Yan, Y., Luo, J., Jiang, D., &amp; Chen, X. (2022). A Global 250-m Downscaled NDVI Product from 1982 to 2018. Remote Sensing, 14(15), 3639.</li> </ul> </li> <li><strong>CHELSA Bioclim Data</strong>: <ul> <li>Karger, D.N., Conrad, O., B&ouml;hner, J., Kawohl, T., Kreft, H., Soria-Auza, R.W., Zimmermann, N.E., Linder, P., Kessler, M. (2017). Climatologies at high resolution for the Earth land surface areas. Scientific Data. 4 170122.&nbsp;<a href="https://doi.org/10.1038/sdata.2017.122" target="_new" rel="noreferrer">https://doi.org/10.1038/sdata.2017.122</a></li> <li>Karger, D.N., Conrad, O., B&ouml;hner, J., Kawohl, T., Kreft, H., Soria-Auza, R.W., Zimmermann, N.E., Linder, H.P., Kessler, M. Data from: Climatologies at high resolution for the earth&rsquo;s land surface areas. Dryad Digital Repository.&nbsp;<a href="http://dx.doi.org/doi:10.5061/dryad.kd1d4" target="_new" rel="noreferrer">http://dx.doi.org/doi:10.5061/dryad.kd1d4</a></li> </ul> </li> </ul>

opencc-by-4.0May 2024View details →
zenodo44/100

High-resolution BIOCLIM and ENVIREM grids for Europe in consecutive 100-year bins spanning the last 21,000 years

<p>Here, I provide a dataset of gridded climatic variables at a spatial resolution of 30 arc-seconds for 210 consecutive 100-year bins spanning the period from 21,000 to 0 BP. The dataset includes 19 bioclimatic and 16 ENVIREM variables (described by Title &amp; Bemmels, 2018) commonly used in species distribution modelling. It covers the European continent and adjacent regions within the following boundaries: 32.5&deg;W&ndash;70&deg;E and 32.5&deg;N&ndash;82.5&deg;N.</p> <p>For each 100-year bin, bioclimatic and ENVIREM variables were calculated based on the downscaled and debiased monthly temperature and precipitation simulations of the Community Climate System Model version 3 (CCSM3; Collins et al., 2006) as provided by the PaleoView software (Fordham et al., 2017). The downscaling procedure was based on the delta-change method (Ramirez Villejas &amp; Jarvis, 2010). As a baseline climatic data, I used monthly temperature and precipitation grids from the CHELSA database for 1940&ndash;1989 (Karger et al., 2017).</p> <p>A detailed description of the dataset, including the downscaling method applied, can be found in the Technical specification attached to this dataset.</p>

opencc-by-4.0Jul 2021View details →
dryad36/100

Data from: Mediterranean bioclimate zones of the world for the understanding of fire regimes

<p><span>Aim:</span><span> To quantify the role of soil fertility in the spatial variability of fire activity and to identify the mechanisms that drive this variability.</span></p> <p><span>Location:</span><span> The five Mediterranean-type climate regions of the world.</span></p> <p><span>Time period:</span> <span>2002 – present.</span></p> <p><span>Major</span> <span>taxa</span> <span>studied:</span> <span>T</span><span>errestrial plants.</span></p> <p><span>Methods:</span><span> We compiled remotely sensed data on fire activity, climate, net primary productivity, and chemical soil properties for bioclimatically homogeneous zones within the five Mediterranean-type climate regions of the world. Putative direct and indirect effects of the environmental variables on fire activity were evaluated through </span><span>structural equation modelling</span><span>.</span></p> <p><span>Results:</span><span> Fire activity increased with net primary productivity, as expected for ecosystems with fuel-limited fire regimes. Soil acidity and the concentration of exchangeable aluminium also increased fire activity, supporting the idea that low fertility promotes plant characteristics that favour fire initiation and spread.</span></p> <p><span>Main</span> <span>conclusions:</span><span> Our research supports a positive relationship between wildfires and low soil fertility in Mediterranean-type climate regions across the globe. Therefore, soil fertility should be incorporated into models predicting future fires in a warming world.</span></p>

opencc-zeroFeb 2024View details →
dryad36/100

Data from: Mediterranean bioclimate zones of the world for the understanding of fire regimes

Open the record for dataset details and reuse information.

publicFeb 2024View details →
zenodo28/100

BioClim Austria: Gridded climate indicators for 1961-1990 and 1991-2020 at 250m resolution

<h2>Overview</h2> <p>This gridded meteorological data set consists of climatologies (climate indicators) on a 30-year average basis for Austria and covers two historical periods with a high spatial resolution of 250m. The two 30-year periods provided for the observations allow the analysis of the climate change that has already occurred. The selection of climate indicators is optimized for the needs of ecological models.&nbsp;</p> <p><strong>Resolution</strong>: 250x250m<br><strong>Projection</strong>: EPSG 31287<br><strong>Extent</strong>: Austria<br><strong>Periods</strong>: 1961-1990 and 1991-2020<br><strong>Format:</strong> GeoTIFF<br><strong>Data sources:</strong> Station data and derived products</p> <p><strong>List of climatologies (climate indicators)&nbsp;</strong></p> <table> <tbody> <tr> <td> <p><strong>#</strong></p> </td> <td> <p><strong>Short name</strong></p> </td> <td> <p><strong>Name</strong></p> </td> <td> <p><strong>Description</strong></p> </td> <td> <p><strong>Unit</strong></p> </td> <td> <p><strong>Yearly (Y),&nbsp; monthly (M) or growing season (GS)<br></strong></p> </td> </tr> <tr> <td> <p><em>1</em></p> </td> <td> <p>tasmin</p> </td> <td> <p>Average daily minimum temperature</p> </td> <td> <p>Arithmetic mean</p> </td> <td> <p>&deg;C</p> </td> <td> <p>Y, M</p> </td> </tr> <tr> <td> <p><em>2</em></p> </td> <td> <p>tasmax</p> </td> <td> <p>Average daily maximum temperature</p> </td> <td> <p>Arithmetic mean</p> </td> <td> <p>&deg;C</p> </td> <td> <p>Y, M</p> </td> </tr> <tr> <td> <p><em>3</em></p> </td> <td> <p>tas</p> </td> <td> <p>Average temperature</p> </td> <td> <p>Arithmetic mean</p> </td> <td> <p>&deg;C</p> </td> <td> <p>Y, M</p> </td> </tr> <tr> <td> <p><em>4</em></p> </td> <td> <p>tas_warmest_month</p> </td> <td> <p>Average temperature mean in the warmest month</p> </td> <td> <p>Calculation of the mean temperature over the climate period for all months and then selection of the highest value for the warmest month</p> </td> <td> <p>&deg;C</p> </td> <td> <p>Y</p> </td> </tr> <tr> <td> <p><em>5</em></p> </td> <td> <p>tas_coldest_month</p> </td> <td> <p>Average temperature mean in the coldest month</p> </td> <td> <p>Calculation of the mean temperature over the climate period for all months and then selection of the lowest value for the coldest month</p> </td> <td> <p>&deg;C</p> </td> <td> <p>Y</p> </td> </tr> <tr> <td> <p><em>6</em></p> </td> <td> <p>tasmin_coldest_month</p> </td> <td> <p>Average temperature minimum in the coldest month</p> </td> <td> <p>Calculation of the mean minimum temperature over the climate period for all months and then selection of the lowest value for the coldest month</p> </td> <td> <p>&deg;C</p> </td> <td> <p>Y</p> </td> </tr> <tr> <td> <p><em>7</em></p> </td> <td> <p>tasmax_warmest_month</p> </td> <td> <p>Average temperature maximum in the warmest month</p> </td> <td> <p>Calculation of the mean maximum temperature over the climate period for all months and then selection of the highest value for the warmest month</p> </td> <td> <p>&deg;C</p> </td> <td> <p>Y</p> </td> </tr> <tr> <td> <p><em>8</em></p> </td> <td> <p>thermal_continentality</p> </td> <td> <p>Average annual amplitude of monthly mean temperature (Thermal continentality)</p> </td> <td> <p>Climatological monthly mean temperature in the warmest month minus climatological monthly mean temperature in the coldest month (04_tas* minus 05_tas*).&nbsp;</p> </td> <td> <p>&deg;C</p> </td> <td> <p>Y</p> </td> </tr> <tr> <td> <p><em>9</em></p> </td> <td> <p>FD</p> </td> <td> <p>Average number of frost days per year</p> </td> <td> <p>Defined by 0&deg;C daily minimum temperature at 2m height.</p> </td> <td> <p>days</p> </td> <td> <p>Y</p> </td> </tr> <tr> <td> <p><em>10</em></p> </td> <td> <p>GSL</p> </td> <td> <p>Average length of the growing season</p> </td> <td> <p>The growing season is the duration in days of the longest continuous period of days with an average temperature of at least 5&deg;C. However, an earlier or later period of such warm days is included in the growing season if it lasts longer than the sum of all intervening cooler days</p> </td> <td> <p>days</p> </td> <td> <p>Y</p> </td> </tr> <tr> <td> <p><em>11</em></p> </td> <td> <p>tas</p> </td> <td> <p>Average temperature in the growing season</p> </td> <td> <p>Average temperature in the growing season defined as in climate indicator 10 (GSL). If a year does not have a growing season, this value is not defined.&nbsp;</p> </td> <td> <p>&deg;C</p> </td> <td> <p>GS</p> </td> </tr> <tr> <td> <p><em>12</em></p> </td> <td> <p>GDD</p> </td> <td> <p>Average Growing Degree Days per year above 5&deg;C</p> </td> <td> <p>&Sigma;(Tmean &ndash; 5&deg;C) per year.&nbsp;</p> </td> <td> <p>&deg;C</p> </td> <td> <p>Y</p> </td> </tr> <tr> <td> <p><em>13</em></p> </td> <td> <p>FD_first</p> </td> <td> <p>Average date of the first frost occurrence</p> </td> <td> <p>Frost is defined by a temperature of 0&deg;C at a height of 2 meters (arithmetic mean). Years without frost are excluded from the calculation of the mean. If no frost occurs at all, the value is indeterminate</p> </td> <td> <p>day of year</p> </td> <td> <p>Y</p> </td> </tr> <tr> <td> <p><em>14</em></p> </td> <td> <p>FD_last</p> </td> <td> <p>Average date of the last frost occurrence</p> </td> <td> <p>Frost is defined by a temperature of 0&deg;C at a height of 2 meters (arithmetic mean). Years without frost are excluded from the calculation of the mean. If no frost occurs at all, the value is indeterminate</p> </td> <td> <p>day of year</p> </td> <td> <p>Y</p> </td> </tr> <tr> <td> <p><em>15</em></p> </td> <td> <p>HD35</p> </td> <td> <p>Average number of extremely hot days above 35&deg;C per year</p> </td> <td> <p>Defined by 35&deg;C daily maximum temperature at 2m height.</p> </td> <td> <p>days</p> </td> <td> <p>Y</p> </td> </tr> <tr> <td> <p><em>16</em></p> </td> <td> <p>FD_10</p> </td> <td> <p>Average number of days with hard frost below -10&deg;C per year</p> </td> <td> <p>Defined by -10&deg;C daily minimum temperature at 2m height.</p> </td> <td> <p>days</p> </td> <td> <p>Y</p> </td> </tr> <tr> <td> <p><em>20</em></p> </td> <td> <p>GLO_hori</p> </td> <td> <p>Average sum of global radiation on horizontal surface</p> </td> <td> <p>Also called irradiance or shortwave incoming radiation, taking cloud cover into account.</p> </td> <td> <p>kWh</p> </td> <td> <p>Y, M</p> </td> </tr> <tr> <td> <p><em>21</em></p> </td> <td> <p>GLO_real</p> </td> <td> <p>Average sum of global radiation on the real surface</p> </td> <td> <p>Also called irradiance or shortwave incoming radiation, taking cloud cover into account.</p> </td> <td> <p>kWh</p> </td> <td> <p>Y, M</p> </td> </tr> <tr> <td> <p><em>31</em></p> </td> <td> <p>vpd</p> </td> <td> <p>Average water vapor pressure deficit</p> </td> <td> <p>Calculated from daily dew point temperature and temperature.&nbsp;</p> </td> <td> <p>hPa</p> </td> <td> <p>Y, M</p> </td> </tr> <tr> <td> <p><em>31</em></p> </td> <td> <p>hurs</p> </td> <td> <p>Average relative humidity</p> </td> <td> <p>Calculated from daily dew point temperature and temperature.&nbsp;</p> </td> <td> <p>%</p> </td> <td> <p>Y, M</p> </td> </tr> <tr> <td> <p><em>32</em></p> </td> <td> <p>vpd</p> </td> <td> <p>Average water vapor pressure deficit</p> </td> <td> <p>Calculated from daily dew point temperature and temperature.&nbsp;</p> </td> <td> <p>hPa</p> </td> <td> <p>GS</p> </td> </tr> <tr> <td> <p><em>32</em></p> </td> <td> <p>hurs</p> </td> <td> <p>Average relative humidity</p> </td> <td> <p>Calculated from daily dew point temperature and temperature.&nbsp;</p> </td> <td> <p>%</p> </td> <td> <p>GS</p> </td> </tr> <tr> <td> <p><em>33</em></p> </td> <td> <p>pr</p> </td> <td> <p>Average precipitation sum</p> </td> <td> <p>&nbsp;</p> </td> <td> <p>mm</p> </td> <td> <p>Y, M</p> </td> </tr> <tr> <td> <p><em>34</em></p> </td> <td> <p>hygric_continentality</p> </td> <td> <p>Average hygric continentality according to Gams</p> </td> <td> <p>Defined as arctan of (elevation/annual_precip). Gams, H. (1931). Die klimatische Begrenzung von Pflanzenarealen und die Verteilung der hygrischen Kontinentalit&auml;t in den Alpen.&nbsp;</p> </td> <td> <p>&deg;</p> </td> <td> <p>Y</p> </td> </tr> <tr> <td> <p><em>35</em></p> </td> <td> <p>pr1mm</p> </td> <td> <p>Average number of days with precipitation&nbsp;</p> </td> <td> <p>Daily precipitation of at least 1mm.&nbsp;</p> </td> <td> <p>days</p> </td> <td> <p>Y</p> </td> </tr> <tr> <td> <p><em>36</em></p> </td> <td> <p>pr1mm</p> </td> <td> <p>Average number of days with precipitation in the growing season</p> </td> <td> <p>Daily precipitation of at least 1mm.&nbsp;</p> </td> <td> <p>days</p> </td> <td> <p>GS</p> </td> </tr> <tr> <td> <p><em>37</em></p> </td> <td> <p>DP_3days, DP_5days, DP_7days</p> </td> <td> <p>Average number of days in dry periods in summer half-year</p> </td> <td> <p>Number of days in periods of at least 3, 5, or 7 days with a daily precipitation total of less than 1mm. Summer half-year: April to September</p> </td> <td> <p>days</p> </td> <td> <p>Y</p> </td> </tr> <tr> <td> <p><em>39</em></p> </td> <td> <p>ET0</p> </td> <td> <p>Average annual potential evapotranspiration</p> </td> <td> <p>Calculation according to FAO Penman-Monteith: fao.org/3/X0490E/x0490e08.htm</p> </td> <td> <p>mm</p> </td> <td> <p>Y, M</p> </td> </tr> <tr> <td> <p><em>40</em></p> </td> <td> <p>WBAL</p> </td> <td> <p>Average climatic water balance</p> </td> <td> <p>Precipitation minus potential evapotranspiration</p> </td> <td> <p>mm</p> </td> <td> <p>Y, M</p> </td> </tr> <tr> <td> <p><em>41</em></p> </td> <td> <p>WBAL</p> </td> <td> <p>Average climatic water balance in the growing season</p> </td> <td> <p>Precipitation minus potential evapotranspiration in the growing season</p> </td> <td> <p>mm</p> </td> <td> <p>GS</p> </td> </tr> </tbody> </table> <p>&nbsp;</p> <h2>Data sources</h2> <p>The climate indicators were calculated using daily data from different sources:</p> <ul> <li><strong>Temperature</strong>: SPARTACUS v2.1 (Gridded data set, 1x1km, https://doi.org/10.1007/s00704-015-1411-4 )</li> <li><strong>Precipitation</strong>: SPARTACUS v2.1 (Gridded data set, 1x1km, https://doi.org/10.1007/s00704-017-2093-x )</li> <li><strong>Radiation</strong>: <br>APOLIS SHORT(Gridded data set, 100x100m, 2006-2020, https://adsabs.harvard.edu/abs/2012EGUGA..14.9705O)<br>APOLIS LONG (Gridded data set, 100x100m, 1981-2016)<br>SPARTACUS v2.1 (Gridded data set, 1x1km, daily sunshine duration, 1961-2020).</li> <li><strong>Wind</strong>: Daily station data (https://doi.org/10.60669/gs6w-jd70)</li> <li><strong>Humidity</strong>: Daily station data&nbsp; (https://doi.org/10.60669/gs6w-jd70)</li> <li><strong>Digital elevation model</strong>: &copy; Kooperation L&auml;nder, Bund (BEV, BML), 2022</li> </ul> <p>&nbsp;</p>

opencc-by-4.0Apr 2024View details →
dryad20/100

Beef cattle value analysis towards bioclimate data

Open the record for dataset details and reuse information.

publicOct 2017View details →

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