title: Extract timeseries data from ERA5 - Google Earth Engine
body: <p>I am trying to extract a time series of mean daily temperatures that intersect with a point feature from the ERA5 dataset in Google Earth Engine. For some rages of years (e.g., '1979' to'1980'), the output throws an 'Internal Server Error'. Other ranges work fine. </p>
  
  <p>Is there a more direct way to extract a time series from an entire image collection with this many data points, or will the server always be overloaded? </p>
  
  <p>Thank you!!</p>
  
  <p><div class="snippet" data-lang="js" data-hide="false" data-console="true" data-babel="false">
  <div class="snippet-code">
  <pre class="snippet-code-js lang-js prettyprint-override"><code>var aoi = ee.Geometry.Point([-62.7962, 58.45]);
  print(aoi);
  Map.addLayer(aoi);
  
  var early = ('1979');
  var late =  ('1980');
  
  // Load in image collection and filter by area and date
  var era5_dat = ee.ImageCollection('ECMWF/ERA5/DAILY')
  .filterDate(early,late) //filter years of interest 
  .select('mean_2m_air_temperature') //
  .map(function(image){return image.clip(aoi)}); //Clips data based on 'aoi'
  
  print('collection', era5_dat);
  
  //Create variables and extract data
  var scale = era5_dat.first().projection().nominalScale().multiply(0.05); print(scale);
  era5_dat = era5_dat.filter(ee.Filter.listContains('system:band_names', era5_dat.first().bandNames().get(0)));
  
  var ft = ee.FeatureCollection(ee.List([]));
  //Function to extract values from image collection based on point file and export as a table 
  var fill = function(img, ini) {
    var inift = ee.FeatureCollection(ini);
    var ft2 = img.reduceRegions(aoi, ee.Reducer.first(), scale);
    var date = img.date().format("YYYYMMdd");
    var ft3 = ft2.map(function(f){return f.set("date", date)});
  return inift.merge(ft3);
  };
  
  // Iterates over the ImageCollection
  var profile = ee.FeatureCollection(era5_dat.iterate(fill, ft));
  print(profile,'profile');
  
  // Export
  Export.table.toDrive({
    collection : profile,
    description : "ERA5-"+early+"-"+late,
    fileNamePrefix : "ERA5-"+early+"-"+late,
    fileFormat : 'CSV',
    folder: 'ERA5 - Basecamp',
    selectors: ["date","first"]
  });</code></pre>
  </div>
  </div>
  </p>