experiment

Metadata for 'Medokads: A Long-term Data Set for Detection amd Monitoring of Desertification Risks in the Mediterranean'

General Information

Name
Medokads: A Long-term Data Set for Detection amd Monitoring of Desertification Risks in the Mediterranean
Acronym
Medokads
Project
MedCLIVAR (Mediterranean CLImate VARiability and Predictability)
Summary
A number of research activities on land surfaces, especially
such funded by the European Commission, deal with the
possible land degradation and desertification processes in
the Mediterranean and the interference to the other regions
of Europe. To cover the whole Mediterranean area and to
include as much as practicable of the adjacent European
land-surface, the region of interest for the 1-km data set
is defined as:

55 N/10 W 55 N/42 E
27 N/10 W 27 N/42 E

This area is extended for summermonths up to 72° N.

The data set represents the daily AVHRR-Data of NOAA 11, 14, 16 and 18
as latitude-longitude-projection in 0.01 degree resolution.

The data are divided into tiles of 5*4 ° ( 10w_31n ...35e_51n), seperately
for

1 / 2 = calibrated AVHRR-CH 1 (VIS) / CH 2 (NIR)
3 - 5 = calibrated AVHRR-CH 3 - 5 (IR)
6 / 7 = local satellite / sun zenith distance
8 / 9 = local satellite / sun azimuth
a = TOA broad-band albedo
i = origin indicator and bitmaps
n = NDVI
p = local scattering angle
s = sea/land surface temperatures (split window)
t = local time of observation T
The data are 16-bit integers
reflectance in 1/100 %
NDVI in 1/100 %
thermal channel in 1/100 ° Celsius
angels in 1/100 °
time in 1/10 second
bitmap BIT0 - BIT 5 origin indicator
BIT0 - BIT3 relative date
BIT4/5 offset to first orbit day/night
BIT6 - BIT12 number of dekade
BIT13 cloudy = 1 (Saunders/Kriebel)
BIT14 cloudy = 1; BIT15 water = 1, land = 0

Areas resp. days not covered are filled with missing value.

The tiles of interest can be best found in the CERA WWW-Gateway by
Find entries by name e.g. as MEDOKADS_00w_39n_n to get the NDVI for the tile
0 ° - 5 E, 35 - 39 N.
Keyword(s)
AVHRR, Global Change, NDVI
Location(s)
Mediterranean: Longitude -10 to 42 Latitude 27 to 55
Spatial Coverage
Longitude -10 to 42 Latitude 27 to 55
Temporal Coverage
1989-01-01 to 2009-12-31 (calendrical)
Size
2.98 TiB (3271859879288 Byte)
Format
'NetCDF'
Progress
metadata only
Creation Date
2011-04-13
Future Review Date
2021-04-10

Citation

Citation
Billing, H.; Koslowski, D. (2011). Medokads: A Long-term Data Set for Detection amd Monitoring of Desertification Risks in the Mediterranean. World Data Center for Climate (WDCC) at DKRZ. http://cera-www.dkrz.de/WDCC/ui/Compact.jsp?acronym=Medokads

 
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