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Minimum and maximum LSTs [°C] associated with the different land cover classes_
| Year | Land Cover | *N | Min LST | Max LST |
|---|---|---|---|---|
| 1984 | Bare Land | 43 | 25.56 | 31.32 |
| Built-up Area | 620 | 23.75 | 32.86 | |
| Mixed Forest | 107 | 23.75 | 30.86 | |
| Wetland Forest | 42 | 25.28 | 29.56 | |
| Total | 816 | 23.75 | 32.86 | |
| 2001 | Bare Land | 43 | 25.60 | 33.38 |
| Built-up Area | 620 | 25.57 | 34.26 | |
| Mixed Forest | 107 | 24.91 | 31.87 | |
| Wetland Forest | 42 | 25.00 | 31.14 | |
| Total | 816 | 24.91 | 34.26 | |
| 2019 | Bare Land | 30 | 27.88 | 32.34 |
| Built-up Area | 411 | 26.24 | 33.83 | |
| Mixed Forest | 94 | 25.74 | 33.17 | |
| Wetland Forest | 42 | 22.73 | 33.12 | |
| Total | 577 | 22.73 | 33.83 |
UTCI heat stress index with LST for Lagos State on January 30, 2019_
| S/N | LGA | Mean LST [°C] 2019 | UTCI *1 [°C] | Heat Stress Level *1 | UTCI **2 [°C] | Heat Stress Level **2 |
|---|---|---|---|---|---|---|
| 1 | Agege | 32.84 | 33.83 | S | 35.58 | S |
| 2 | Ajeromi-Ifelodun | 31.44 | 31.70 | M | 33.62 | S |
| 3 | Alimosho | 31.98 | 32.50 | S | 34.36 | S |
| 4 | Amuwo-Odofin | 29.42 | 28.80 | M | 30.98 | M |
| 5 | Apapa | 29.61 | 29.10 | M | 31.22 | M |
| 6 | Badagry | 29.01 | 28.30 | M | 31.46 | M |
| 7 | Epe | 29.94 | 29.60 | M | 30.61 | M |
| 8 | Eti-Osa | 31.47 | 31.80 | M | 33.66 | S |
| 9 | Ibeju-Lekki | 30.30 | 30.10 | M | 32.11 | S |
| 10 | Ifako-Ijaiye | 32.78 | 33.70 | S | 35.49 | S |
| 11 | Ikeja | 32.32 | 33.00 | S | 34.84 | S |
| 12 | Ikorodu | 30.83 | 30.10 | M | 32.10 | S |
| 13 | Kosofe | 31.55 | 31.90 | M | 33.77 | S |
| 14 | Lagos Island | 30.58 | 30.50 | M | 32.48 | S |
| 15 | Lagos Mainland | 30.59 | 30.50 | M | 32.49 | S |
| 16 | Mushin | 31.36 | 31.60 | M | 33.51 | S |
| 17 | Ojo | 30.06 | 29.70 | M | 31.80 | M |
| 18 | Oshodi-Isolo | 31.91 | 32.40 | S | 34.26 | S |
| 19 | Somolu | 31.69 | 32.10 | S | 33.96 | S |
| 20 | Surulere | 31.31 | 31.20 | M | 33.10 | S |
| Maximum temp for that day | 34.00 | 35.70 | S | 37.30 | S |
Areal distribution in the coverage of land cover between 1984 and 2019_
| S/N | Land Cover | Area in 1984 | Area in 2001 | Area in 2019 | |||
|---|---|---|---|---|---|---|---|
| [km2] | [%] | [km2] | [%] | [km2] | [%] | ||
| 1 | Bare Land | 136.60 | 3.76 | 189.81 | 5.23 | 142.27 | 3.86 |
| 2 | Built-up Area | 134.58 | 3.70 | 464.21 | 12.78 | 1041.88 | 28.24 |
| 3 | Mixed Forest | 1708.10 | 47.02 | 1466.45 | 40.37 | 1043.05 | 29.13 |
| 4 | Water Body | 761.88 | 20.97 | 748.77 | 20.61 | 714.32 | 19.36 |
| 5 | Wetland Forest – including mangrove and swamps | 794.87 | 21.88 | 763.29 | 21.01 | 678.90 | 18.40 |
| 6 | Cloud Cover | 96.49 | 2.66 | – | – | 17.07 | 0.46 |
| Total | 3632.52 | 100.00 | 3632.52 | 100.00 | 3637.49 | 100.00 | |
Contribution index (CI) for 1984, 2001 and 2019_
| Land cover | 1984 | 2001 | 2019 | ||||||
|---|---|---|---|---|---|---|---|---|---|
| Dt [°C] | S | CI | Dt [°C] | S | CI | Dt [°C] | S | CI | |
| Bare land | −0.17 | 0.04 | −0.01 | −0.17 | 0.05 | −0.01 | 0.23 | 0.04 | 0.01 |
| Built-up area | 0.37 | 0.04 | 0.01 | 0.45 | 0.13 | 0.06 | 0.41 | 0.28 | 0.12 |
| Mixed forest | −1.51 | 0.47 | −0.71 | −1.73 | 0.40 | −0.70 | −1.27 | 0.29 | −0.37 |
| Wetland forest | −1.32 | 0.22 | −0.29 | −1.79 | 0.21 | −0.38 | −1.36 | 0.18 | −0.25 |
Areal changes in land cover within the six focus LGAs between 1984 and 2019_
| LGA | 1984 | 2001 | 2019 | 1984 | 2001 | 2019 | 1984 | 2001 | 2019 | 1984 | 2001 | 2019 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Bare land | Built-up area | Mixed forest | Wetland forest | |||||||||
| Area [km2] | ||||||||||||
| Alimosho | 16.84 | 28.48 | 0.32 | 4.10 | 91.26 | 150.88 | 118.83 | 44.87 | 10.53 | 43.82 | 18.95 | 21.63 |
| Badagry | 26.11 | 40.37 | 17.98 | 0.83 | 16.43 | 111.63 | 188.05 | 207.05 | 130.91 | 110.65 | 123.78 | 130.28 |
| Eti-Osa | 6.85 | 24.52 | 15.35 | 9.06 | 35.63 | 113.89 | 86.20 | 79.24 | 35.00 | 58.37 | 24.78 | 12.66 |
| Ifako-Ijaiye | 6.78 | 4.44 | 0.00 | 3.21 | 18.12 | 25.21 | 15.35 | 3.57 | 1.00 | 1.05 | 0.26 | 0.31 |
| Ikorodu | 3.91 | 13.61 | 1.45 | 2.27 | 42.06 | 181.42 | 280.92 | 238.15 | 91.85 | 77.06 | 69.34 | 88.94 |
| Ojo | 16.24 | 16.92 | 5.75 | 1.21 | 36.34 | 62.00 | 54.17 | 42.18 | 22.93 | 41.98 | 47.75 | 54.37 |