Kappa Coefficients of Cold Space Changes in Tehran from 2015 to 2023

Kappa coefficients quantify changes in urban green space connectivity and cold area distribution in Tehran, Iran. The dataset was created by Zahra Omidighalehmohammadi using Landsat satellite data processed in Google Earth Engine. It covers the period from 2015 to 2023 and was last updated in April 2026.

Use Cases

• Modeling connectivity flows between urban cold cores based on electrical circuit theory.
• Analyzing spatiotemporal evolution of urban green spaces based on NDVI and land surface temperature maps.
• Quantifying fragmentation and expansion of hot and cold zones using landscape morphology metrics.
• Identifying optimal thresholds for green area classification using ROC and TSS metrics.

Strengths

• Includes specific quantified changes: a 1,400 ha decrease in cold areas and a 1,618 ha increase in hot zones.
• Covers a 9-year time series from 2015 to 2023.
• Uses a defined methodological framework based on satellite data and connectivity analysis.

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Row count is unknown, which may limit suitability assessment.
• The dataset is very small at 5.5 KB, indicating limited scope.

Provenance

Source

figshare

Collection Method

Satellite data from Landsat processed in Google Earth Engine, using NDVI and land surface temperature maps.

Time Range

2015 to 2023

Freshness

Last updated 2026-04-09 17:34:13; freshness should be verified.

Geography

Tehran, Iran