QGIS ARR to TUFLOW: Difference between revisions
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=Additional Options=
===Climate Change===
Climate change options can be added by clicking on '''Edit''' under the climate change section. This opens up a table widget that the user can then add/remove climate change scenarios based on the guidance in ARR v4.2. Once a user adds a scenario (green plus), they can double click on the values to change them. For example, double clicking on SSP2-4.5 under the 'SSP' heading will show the available Shared Socioeconomic Pathway (SSP) options. Scenarios added in the table will be displayed in the climate change section (underneath the edit button). Note: each scenario name must be unique and generally the table widget will force unique names. The scenario names will be used throughout the outputs and the user is free to customise the scenario names as they want.<br>
The table columns within the table widget are based on ARR guidelines v4.2 and the examples presented in Book 1, Chapter 6. Please note the following assumptions:<br>
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* Medium-term horizon = 2050
* Long-term horizon = 2090
* Temperature Change - Setting this to -1 will adopt the temperature changes output in the climate change part of the ARR datahub download. If a value
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[[File: ARR_example_climate_change_tef_01a.png]]
<br><br>
====LIMB Data and Climate Change====
The LIMB sub-daily rainfall data midpoint is 2002, which differs from the ARR baseline period of 1990. Below is a worked example of applying a baseline change in the tool for the <b>Near term</b> and <b>SSP2-4.5</b> scenario. Note, this is not required for daily or longer rainfall durations.
Reference document:<br>
<b><u>https://data.arr-software.org/static/pdf/LIMB_Addendum_climate_change_considerations.pdf</u></b>
<ol>
<li> Calculate the difference in temperature, comparing the ARR values to the LIMB values:
<ol>
<li> From [https://www.arr-software.org/pdfs/ARR_190514_V4.2.pdf ARR v4.2] Book 1, Chapter 6, Table 1.6.2: Temperature change = <b>1.2</b>
<li> From the LIMB reference document above, Table 3: Temperature change = <b>0.66</b>
<li> Therefore, baseline temperature change = <b>0.54</b>
</ol>
<li> Update the "Baseline Change" value in the climate change dialog within the ARR to TUFLOW tool.<br>
[[File:Climate_change_scenario_dialog_limb_baseline_change.png]]
<li> Run the tool and check that the climate change uplift factors match the values referenced in the [https://data.arr-software.org/static/pdf/LIMB_Addendum_climate_change_considerations.pdf LIMB reference document Appendix A tables].
</ol>
===Temporal Patterns===
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