Grow Degree Calculator - Revision history

Agrineer at 23:49, 26 November 2018

2018-11-26T23:49:45Z

← Older revision		Revision as of 16:49, 26 November 2018
Line 5:		Line 5:
	knowing the accumulated grow degree values throughout a season, farmers can say when orchard trees will blossom, or when insects will hatch, and more. Click [http://agrineer.org/gdc/gdc.php here] to use the GDC application.		knowing the accumulated grow degree values throughout a season, farmers can say when orchard trees will blossom, or when insects will hatch, and more. Click [http://agrineer.org/gdc/gdc.php here] to use the GDC application.

	== ~~Procedure~~ ==		This is an educational platform disseminating research ideas and applications. We hope that the user can benefit from the software and hardware sources provided but we do not take any responsibility for the consequences of decisions based on data released or on the results given in our applications. See the footer disclaimer for more information.

			== Description ==
	The GDC application calculates a location's accumulated grow degree value from historical [[WRF Hindcast]] data stored on our server. The user customizes the calculation request by entering temperature parameters, location, and run dates. The application determines which sector and data pixel to use, gets historical daily minimum and maximum temperatures, calculates and accumulates the grow degree units over the run dates given for the pixel location.		The GDC application calculates a location's accumulated grow degree value from historical [[WRF Hindcast]] data stored on our server. The user customizes the calculation request by entering temperature parameters, location, and run dates. The application determines which sector and data pixel to use, gets historical daily minimum and maximum temperatures, calculates and accumulates the grow degree units over the run dates given for the pixel location.

Agrineer at 17:50, 23 October 2018

2018-10-23T17:50:38Z

← Older revision		Revision as of 10:50, 23 October 2018
Line 31:		Line 31:
	=== Input section ===		=== Input section ===
	==== Temps (celsius) ====		==== Temps (celsius) ====
	<pre style="color:rgb(204,~~204~~,0)"> yellow #1 in the above image</pre><br />		<pre style="color:rgb(204,112,0)"> yellow #1 in the above image</pre><br />
	Organisms (plants and insects) have a range of temperatures in which they can grow. Example: 5, 30		Organisms (plants and insects) have a range of temperatures in which they can grow. Example: 5, 30
	'''base''' 5		'''base''' 5
Line 39:		Line 39:

	==== Location (decimal degrees) ====		==== Location (decimal degrees) ====
	<pre style="color:rgb(204,~~204~~,0)"> yellow #2 in the above image</pre><br />		<pre style="color:rgb(204,112,0)"> yellow #2 in the above image</pre><br />
	Note: currently about 1/3 of the geographical area of the contiguous 48 states is available for processing. See [[WRF Hindcast]] for current operational sectors. If the provided latitude and longitude values are not within the active sectors an error message will appear stating 'Cannot find given location in active sectors'.		Note: currently about 1/3 of the geographical area of the contiguous 48 states is available for processing. See [[WRF Hindcast]] for current operational sectors. If the provided latitude and longitude values are not within the active sectors an error message will appear stating 'Cannot find given location in active sectors'.

Line 48:		Line 48:

	==== Rundates (yyyymmdd) ====		==== Rundates (yyyymmdd) ====
	<pre style="color:rgb(204,~~204~~,0)"> yellow #3 in the above image</pre><br />		<pre style="color:rgb(204,112,0)"> yellow #3 in the above image</pre><br />
	The start and end date specify when to accumulate the grow degree values. Dates are given in the YYYYMMDD format, eg. March 5, 2017 would be 20170305. Example: January 1, 2017; April 6, 2017		The start and end date specify when to accumulate the grow degree values. Dates are given in the YYYYMMDD format, eg. March 5, 2017 would be 20170305. Example: January 1, 2017; April 6, 2017
	'''start''' 20170101		'''start''' 20170101
Line 55:		Line 55:

	==== Apply ====		==== Apply ====
	<pre style="color:rgb(204,~~204~~,0)"> yellow #4 in the above image</pre><br />		<pre style="color:rgb(204,112,0)"> yellow #4 in the above image</pre><br />
	Run the application with the provided values of Temps, Location, and Rundates.		Run the application with the provided values of Temps, Location, and Rundates.

	=== Output section ===		=== Output section ===
	==== Three images: 3.3km, 10km, 30km ====		==== Three images: 3.3km, 10km, 30km ====
	<pre style="color:rgb(204,~~204~~,0)"> yellow #5 in the above image</pre><br />		<pre style="color:rgb(204,112,0)"> yellow #5 in the above image</pre><br />
	Clicking on a tab will display the processed accumulated Grow Degree image of the area of interest. All 3 images are 171 x 171 pixels in size but the resolution of each pixel varies in each of the 3.		Clicking on a tab will display the processed accumulated Grow Degree image of the area of interest. All 3 images are 171 x 171 pixels in size but the resolution of each pixel varies in each of the 3.
	'''3.3km''' each pixel in this image represents an area approximately 3.3 km by 3.3 km.		'''3.3km''' each pixel in this image represents an area approximately 3.3 km by 3.3 km.
Line 83:		Line 83:

	==== Latitude, Longitude, GDC value ====		==== Latitude, Longitude, GDC value ====
	<pre style="color:rgb(204,~~150~~,0)"> yellow #6 in the above image</pre><br />		<pre style="color:rgb(204,112,0)"> yellow #6 in the above image</pre><br />
	Each pixel of the displayed image (171 x 171 pixels = 29,241 total pixels per image) has values representing the pixel's latitude, longitude, and the calculated Grow Degrees. Move your mouse over the image and watch #6 to see the results.		Each pixel of the displayed image (171 x 171 pixels = 29,241 total pixels per image) has values representing the pixel's latitude, longitude, and the calculated Grow Degrees. Move your mouse over the image and watch #6 to see the results.

	==== Plot of Grow Degrees during Rundates for the area of interest and temperatures ====		==== Plot of Grow Degrees during Rundates for the area of interest and temperatures ====
	<pre style="color:rgb(204,~~204~~,0)"> yellow #7 in the above image</pre><br />		<pre style="color:rgb(204,112,0)"> yellow #7 in the above image</pre><br />

	==== Text report ====		==== Text report ====
	<pre style="color:rgb(204,~~204~~,0)"> yellow #8 in the above image</pre><br />		<pre style="color:rgb(204,112,0)"> yellow #8 in the above image</pre><br />
	Text description of the GDC run and its results.		Text description of the GDC run and its results.

Agrineer at 17:46, 23 October 2018

2018-10-23T17:46:40Z

← Older revision		Revision as of 10:46, 23 October 2018
Line 83:		Line 83:

	==== Latitude, Longitude, GDC value ====		==== Latitude, Longitude, GDC value ====
	<pre style="color:rgb(204,~~204~~,0)"> yellow #6 in the above image</pre><br />		<pre style="color:rgb(204,150,0)"> yellow #6 in the above image</pre><br />
	Each pixel of the displayed image (171 x 171 pixels = 29,241 total pixels per image) has values representing the pixel's latitude, longitude, and the calculated Grow Degrees. Move your mouse over the image and watch #6 to see the results.		Each pixel of the displayed image (171 x 171 pixels = 29,241 total pixels per image) has values representing the pixel's latitude, longitude, and the calculated Grow Degrees. Move your mouse over the image and watch #6 to see the results.

Agrineer at 17:03, 22 September 2018

2018-09-22T17:03:44Z

← Older revision		Revision as of 10:03, 22 September 2018
Line 23:		Line 23:
	if "Daily Degree Day" < 0 then set "Daily Degree Day" = 0.		if "Daily Degree Day" < 0 then set "Daily Degree Day" = 0.

	Daily values are accumulated over the period of specified run days.		"Daily Degree Day" values are accumulated over the period of specified run days.
	=== Links of Interest ===		=== Links of Interest ===

Agrineer at 17:01, 22 September 2018

2018-09-22T17:01:40Z

← Older revision		Revision as of 10:01, 22 September 2018
Line 9:		Line 9:

	=== Calculation of Grow Degree ===		=== Calculation of Grow Degree ===
			The Grow Degree Calculator (GDC) package implements a simple daily calculation:

			(Daily Max Air Temp + Daily Min Air Temp)
			Daily Degree Day = ---------------------------------------- - Base Temp
			2

			Where:

			"Daily Max Air Temp" is capped by the "Upper" temperature threshold.

			and

			if "Daily Degree Day" < 0 then set "Daily Degree Day" = 0.

			Daily values are accumulated over the period of specified run days.
	=== Links of Interest ===		=== Links of Interest ===

Greg: /* Three images: 3.3km, 10km, 30km */

2017-11-16T18:38:21Z

Three images: 3.3km, 10km, 30km

← Older revision		Revision as of 11:38, 16 November 2017
Line 64:		Line 64:
	Clicking on the 'house' in the image will restore the image to its initial display size and position.		Clicking on the 'house' in the image will restore the image to its initial display size and position.

	In the 3.3km image you should see a small blinking black square in the image. Your latitude and longitude of interest will be inside this square. Use the '+' sign or the wheel on your mouse to zoom in. Move the mouse around inside the square until the latitude and longitude values shown in #6 '''approximate''' the values you entered in #2 for latitude and longitude. It is unlikely they will match exactly, a ~~very, very~~ small disappointing aspect of the display software. Note that the 'Text report' (yellow #8) has the exact latitude and longitude.		In the 3.3km image you should see a small blinking black square in the image. Your latitude and longitude of interest will be inside this square. Use the '+' sign or the wheel on your mouse to zoom in. Move the mouse around inside the square until the latitude and longitude values shown in #6 '''approximate''' the values you entered in #2 for latitude and longitude. It is unlikely they will match exactly, a small disappointing aspect of the display software. Note that the 'Text report' (yellow #8) has the exact latitude and longitude.

	If you don't see the small blinking black square it's because the underlying or surrounding area is also black or blackish. In this case move the mouse around in the image and look at the latitude and longitude values displayed in #6 until you have homed in on the desired area, then zoom in, etc.		If you don't see the small blinking black square it's because the underlying or surrounding area is also black or blackish. In this case move the mouse around in the image and look at the latitude and longitude values displayed in #6 until you have homed in on the desired area, then zoom in, etc.

Greg: /* Text report */

2017-11-16T17:24:46Z

Text report

← Older revision		Revision as of 10:24, 16 November 2017
Line 76:		Line 76:

	==== Text report ====		==== Text report ====
	(yellow #8 in the above image)<br />		<pre style="color:rgb(204,204,0)"> yellow #8 in the above image</pre><br />
	Text description of the GDC run and its results.		Text description of the GDC run and its results.

Greg: /* Plot of Grow Degrees during Rundates for the area of interest and temperatures */

2017-11-16T17:24:21Z

Plot of Grow Degrees during Rundates for the area of interest and temperatures

← Older revision		Revision as of 10:24, 16 November 2017
Line 73:		Line 73:

	==== Plot of Grow Degrees during Rundates for the area of interest and temperatures ====		==== Plot of Grow Degrees during Rundates for the area of interest and temperatures ====
	(yellow #7 in the above image)<br />		<pre style="color:rgb(204,204,0)"> yellow #7 in the above image</pre><br />

	==== Text report ====		==== Text report ====

Greg: /* Latitude, Longitude, GDC value */

2017-11-16T17:23:55Z

Latitude, Longitude, GDC value

← Older revision		Revision as of 10:23, 16 November 2017
Line 69:		Line 69:

	==== Latitude, Longitude, GDC value ====		==== Latitude, Longitude, GDC value ====
	(yellow #6 in the above image)<br />		<pre style="color:rgb(204,204,0)"> yellow #6 in the above image</pre><br />
	Each pixel of the displayed image (171 x 171 pixels = 29,241 total pixels per image) has values representing the pixel's latitude, longitude, and the calculated Grow Degrees. Move your mouse over the image and watch #6 to see the results.		Each pixel of the displayed image (171 x 171 pixels = 29,241 total pixels per image) has values representing the pixel's latitude, longitude, and the calculated Grow Degrees. Move your mouse over the image and watch #6 to see the results.

Greg: /* Three images: 3.3km, 10km, 30km */

2017-11-16T17:23:19Z

Three images: 3.3km, 10km, 30km

← Older revision		Revision as of 10:23, 16 November 2017
Line 46:		Line 46:
	=== Output section ===		=== Output section ===
	==== Three images: 3.3km, 10km, 30km ====		==== Three images: 3.3km, 10km, 30km ====
	(yellow #5 in the above image)<br />		<pre style="color:rgb(204,204,0)"> yellow #5 in the above image</pre><br />
	Clicking on a tab will display the processed accumulated Grow Degree image of the area of interest. All 3 images are 171 x 171 pixels in size but the resolution of each pixel varies in each of the 3.		Clicking on a tab will display the processed accumulated Grow Degree image of the area of interest. All 3 images are 171 x 171 pixels in size but the resolution of each pixel varies in each of the 3.
	'''3.3km''' each pixel in this image represents an area approximately 3.3 km by 3.3 km.		'''3.3km''' each pixel in this image represents an area approximately 3.3 km by 3.3 km.