Table 3 Mean and standard deviation of the intercept and slope for summer (top) and winter (bottom) seasons of several fields for the MENA region (13° W–60° E, 15°–40° N).

From: Recent and projected changes in climate patterns in the Middle East and North Africa (MENA) region

Variable

Seasons

Intercept

Trend

Precipitable water

Summer

23.437 ± 7.487 kg m−2

0.633 ± 0.484 kg m−2 year−1

Winter

11.461 ± 4.272 kg m−2

0.248 ± 0.272 kg m−2 year−1

Total cloud fraction

Summer

14.853 ± 16.313%

0.037 ± 0.119% year−1

Winter

37.559 ± 22.726%

− 0.028 ± 0.171% year−1

Low cloud fraction

Summer

2.805 ± 6.198%

0.00005 ± 0.034% year−1

Winter

7.875 ± 6.277%

0.066 ± 0.096% year−1

Middle cloud fraction

Summer

1.174 ± 2.505%

0.002 ± 0.020% year−1

Winter

5.809 ± 7.958%

− 0.010 ± 0.050% year−1

High cloud fraction

Summer

2.730 ± 7.056%

0.017 ± 0.060% year−1

Winter

1.527 ± 3.366%

0.000 ± 0.000% year−1

Daytime cloud fraction

Summer

10.753 ± 18.259%

0.008 ± 0.087% year−1

Winter

30.524 ± 27.584%

0.001 ± 0.092% year−1

Nighttime cloud fraction

Summer

14.170 ± 20.073%

0.014 ± 0.126% year−1

Winter

37.594 ± 26.991%

− 0.073 ± 0.182% year−1

Cloud top temperature

Summer

277.304 ± 10.882 K

0.007 ± 0.225 K year−1

Winter

268.803 ± 8.705 K

0.154 ± 0.123 K year−1

Downward SW radiation flux

Summer

314.676 ± 20.204 W m−2

− 0.326 ± 0.252 W m−2 year−1

Winter

166.996 ± 53.016 W m−2

0.169 ± 0.367 W m−2 year−1

Downward LW radiation flux

Summer

391.378 ± 23.860 W m−2

0.337 ± 0.287 W m−2 year−1

Winter

307.890 ± 29.411 W m−2

− 0.013 ± 0.393 W m−2 year−1

Air temperature

Summer

302.401 ± 4.748 K

0.044 ± 0.018 K year−1

Winter

286.304 ± 5.938 K

0.042 ± 0.020 K year−1

Sea-level pressure

Summer

1009.23 ± 4.890 hPa

− 0.016 ± 0.011 hPa year−1

Winter

1016.79 ± 2.349 hPa

− 0.008 ± 0.011 hPa year−1

Precipitation rate

Summer

7.7 × 10−5 ± 0.001 mm h−1

4.4 × 10−8 ± 7.1 × 10−6 mm h−1 year−1

Winter

0.0014 ± 0.005 mm h−1

− 2.1 × 10−6 ± 4.3 × 10−5 mm h−1 year−1

Dust optical depth

Summer

0.232 ± 0.160

0.0006 ± 0.0012 year−1

Winter

0.072 ± 0.068

0.0003 ± 0.0004 year−1

  1. Only grid-points for which the trends are statistically significant at the 95% confidence interval within the MENA domain are considered to generate the statistics.