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Table 3 The spatial drought trends in % of area coverage in the Kiremt season from 1983–2016

From: Meteorological Drought in Northwestern Escarpment of Ethiopian Rift Valley: detection seasonal and spatial trends

Years

Spatial drought area coverage in % for Kiremt season

ALOFLZ (total area 1106.19 km2)

TCLZ (total area 933.56 km2)

RVLZ (total area 1850.10 km2)

DF

MD

MOD

SD

ESD

DF

MD

MOD

SD

ESD

DF

MD

MOD

SD

ESD

1983

–

12.53

79.64

7.83

–

–

1.86

72.39

25.75

–

–

3.63

88.53

7.84

–

1984

–

–

–

100

–

–

–

8.34

91.66

–

–

0.94

2.93

96.14

–

1985

–

–

100

–

–

–

–

100

–

–

–

20.53

79.47

–

–

1986

82.77

17.23

–

–

–

100

–

–

–

–

100

–

–

–

–

1987

–

–

100

–

–

–

2.62

88.36

9.02

–

–

2.81

95.18

2.01

–

1988

100

–

–

–

–

100

–

–

–

–

100

–

–

–

–

1989

–

–

65.79

32.66

1.55

–

–

93.52

6.48

–

–

1.87

79.36

18.77

–

1990

–

–

100

–

–

–

–

97.38

2.62

–

–

–

98.13

1.87

–

1991

–

7.83

92.17

–

–

–

56.04

43.96

–

–

–

–

97.19

2.81

–

1992

100

–

–

–

–

87.99

12.01

–

–

–

95.18

4.82

–

–

–

1993

–

–

100

–

–

–

–

100

–

–

–

2.44

97.56

–

–

1994

100

–

–

–

–

100

–

–

–

–

100

–

–

–

–

1995

100

–

–

–

–

100

–

–

–

–

92.51

7.49

–

–

–

1996

92.17

7.83

–

–

–

88.39

11.61

–

–

–

84.56

15.44

–

–

–

1997

–

100

–

–

–

–

100.00

–

–

–

–

100

–

–

–

1998

100

–

–

–

–

100

–

–

–

–

100

–

–

–

–

1999

100

–

–

–

–

100

–

–

–

–

100

–

–

–

–

2000

100

–

–

–

–

100

–

–

–

–

100

–

–

–

–

2001

100

–

–

–

–

100

–

–

–

–

100

–

–

–

–

2002

–

100

–

–

–

–

98.42

–

–

–

–

97.21

2.79

–

–

2003

86.14

13.86

–

–

–

63.61

36.39

–

–

–

97.25

2.75

–

–

–

2004

23.48

76.52

–

–

–

–

90.01

–

–

–

85.55

14.45

–

–

–

2005

100

–

–

–

–

100

–

–

–

–

95.26

4.74

–

–

–

2006

100

–

–

–

–

100

–

–

–

–

94.14

5.86

–

–

–

2007

100

–

–

–

–

100

–

–

–

–

100

–

–

–

–

2008

–

100

–

–

–

–

100.00

–

–

–

13.91

0.94

85.16

–

–

2009

49.88

50.12

–

–

–

57.58

42.42

–

–

–

82.04

17.96

–

–

–

2010

100

–

–

–

–

100

–

–

–

–

100

–

–

–

–

2011

21.93

78.07

–

–

–

62.27

37.73

–

–

–

5.18

94.82

–

–

–

2012

70.48

29.52

–

–

–

62.43

37.57

–

–

–

82.36

17.64

–

–

–

2013

100

–

–

–

–

97.38

2.62

–

–

–

98.13

1.87

–

–

–

2014

60.84

39.16

–

–

–

44.59

55.41

–

–

–

44.17

55.83

–

–

–

2015

–

34.21

62.66

3.13

–

1.86

33.62

64.53

–

–

–

0.94

40.38

58.69

–

2016

100

–

–

–

–

98.14

1.86

–

–

–

18.05

81.95

–

–

–

  1. DF Drought Free, MD Mild Drought, MODModerate Drought, SD Severe Drought, ESD Extremely Severe Drought, (– ) Zero value