NIAMEY







Location

lon / lat [deg]: 2.1722 / 13.4814

Source network: AERONET







Geostationary surface albedo (GSA) data


“+000”


“+057/+063”


Landcover information (based on ESA CCI landcover data)


Landcover fractions @ 2km distance


Landcover fractions @ 20 km distance




Legend



Distance to open water bodies [km]:

4.52

Distance to urban areas [km]:

0.4



Radius: 1 km

Number of landcover classes:

3

Dominant landcover type:

190: urban areas

Fraction of dominant landcover type [%]:

50.0



Radius: 2 km

Number of landcover classes:

4

Dominant landcover type:

190: urban areas

Fraction of dominant landcover type [%]:

54.0



Radius: 5 km

Number of landcover classes:

9

Dominant landcover type:

190: urban areas

Fraction of dominant landcover type [%]:

34.0



Radius: 10 km

Number of landcover classes:

8

Dominant landcover type:

150: Sparse vegetation (tree, shrub, herbaceous cover) (<15%)

Fraction of dominant landcover type [%]:

32.0



Radius: 20 km

Number of landcover classes:

8

Dominant landcover type:

150: Sparse vegetation (tree, shrub, herbaceous cover) (<15%)

Fraction of dominant landcover type [%]:

41.0





Disturbances







Heterogeneity analysis

The heterogeneity analysis provides information about the spatial and temporal heterogeneity of the site.

Topography



Roman et al. (2009) index


St

2.23395971202

Rcv

0.320025337025

Rse

0.0

Rst

-0.0230840588518

Rsv

-0.999797543696



Height range @ 1km [m]

6

Height range @ 2km [m]

24

Height range @ 5km [m]

45

Height range @ 10km [m]

-999

Height range @ 20km [m]

-999



Variance slope @ 1 km

28

Variance slope @ 2 km

39

Variance slope @ 5 km

56

Variance slope @ 10 km

-999

Variance slope @ 20 km

-999







NDVI (max. NDVI composite)


Roman et al. (2009) index


St

3.20030218028

Rcv

0.798733445562

Rse

0.0

Rst

-0.0555055024212

Rsv

0.0831725309972



NDVI range @ 1km [-]

0.01

NDVI range @ 2km [-]

0.05

NDVI range @ 5km [-]

0.11

NDVI range @ 10km [-]

0.16

NDVI range @ 20km [-]

0.15



Variance slope @ 1 km

0.000188142190148

Variance slope @ 2 km

0.000239266287684

Variance slope @ 5 km

0.000232961304359

Variance slope @ 10 km

0.000169346962761

Variance slope @ 20 km

7.46621265661e-05







NDVI (min. NDVI composite)I


Roman et al. (2009) index


St

0.923049061273

Rcv

2.0289352205

Rse

0.0

Rst

-0.0291644143895

Rsv

1.19199846484



NDVI range @ 1km [-]

0.0

NDVI range @ 2km [-]

0.01

NDVI range @ 5km [-]

0.05

NDVI range @ 10km [-]

0.06

NDVI range @ 20km [-]

0.05



NDVI slope @ 1 km

1.97130544681e-05

NDVI slope @ 2 km

2.59792852524e-05

NDVI slope @ 5 km

2.80457360148e-05

NDVI slope @ 10 km

2.35620127322e-05

NDVI slope @ 20 km

1.28046073745e-05







Temporal stability analysis

+000 deg (BHR)




BHR statistics

Temporal stability [1/decade]:


abs

rel


Weighted least square:

-0.016045699201






Ordinary least square:

-0.0199987632594










Probabilities that GCOS criteria is met:

Weighted least square:

2.8 %

Ordinary least square:

3.0 %





DHR statistics

Temporal stability [1/decade]:


abs

rel


Weighted least square:

-0.0123023153445






Ordinary least square:

-0.0128432984395










Probabilities that GCOS criteria is met:

Weighted least square:

2.4 %

Ordinary least square:

2.5 %





+057/+063 deg (BHR)




BHR statistics

Temporal stability [1/decade]:


abs

rel


Weighted least square:

-0.0013756122367






Ordinary least square:

-0.0135206325387










Probabilities that GCOS criteria is met:

Weighted least square:

6.1 %

Ordinary least square:

4.1 %





DHR statistics

Temporal stability [1/decade]:


abs

rel


Weighted least square:

0.00461598274427






Ordinary least square:

0.000915031668698










Probabilities that GCOS criteria is met:

Weighted least square:

2.3 %

Ordinary least square:

6.5 %







Temporal anomaly analyis

The variance of the temporal anomalies provides an additional measure about the stability of the signal AFTER removal of the mean seasonal cylce.

+000 deg


+057/+063 deg