Comparison of temperature from different sources

Data source

The weather records are sourced for 79 sites from

• SILO Patched Point Dataset with label ppd
• SILO Data Drill with label drill
• Australian Gridded Climate Data from BOM with label agcd
• NASA POWER with label power

The daily temperature (oC) are downloaded from 1990-01-01 to 2022-12-31.

Sites

There are 79 sites sourced from Lilley et al (2019) across Australian grain belt.

Yearly average minimum temperature

I calculated the yearly average minimum temperature and then anomaly of average minimum temperature from 1990 to 2022.

Figure 1: Anomaly of average minimum temperature (C)

Figure 2: Comparison of yearly average minimum temperature between AGDC and other sources

Figure 3: Comparison of daily minimum temperature between AGDC and other sources

Yearly average maximum temperature

I calculated the yearly average maximum temperature and then anomaly of average maximum temperature from 1990 to 2022.

Figure 4: Anomaly of average maximum temperature (C)

Figure 5: Comparison of yearly average maximum temperature between AGDC and other sources

Figure 6: Comparison of daily maximum temperature between AGDC and other sources

Summary

Comparing with radiation, temperatures don’t have big difference among data source.

Reference

Lilley JM, Flohr BM, Whish JPM, Farre I, Kirkegaard JA. 2019. Defining optimal sowing and flowering periods for canola in Australia. Field Crops Research 235, 118–128.