Data
description |
Historical Indonesian
climate data at KNMI
The table below presents an inventory of the sources
with Indonesian climate data available at KNMI and the estimated amounts of labor
for digitizing each source.
period |
data | amount | estimate
labour# | Remarks | 1866-1970 | hourly
observations
air pressure,
temperature,
moisture, etc.
Batavia/Jakarta | ~
105 years of
hourly
data: 105*365*24 =
~ 1 million obs.
(avg. 7
elements/obs.)
| 1 year of work
planner (including
metadata
research)
+ 5 man-year typing
= 6 man-year
| More
recent
data needed
for interpretation
| About 1879-1916
| daily
precipitation
sums
various stations
| Avg.
300 precip
stations:
300*37*365=
over 4 million
observations.
| 1
year of work
planner
(including metadata
research)
+ 3 man-year
typing
= 4 man-year
| More recent
data
needed
for interpretation
| About 1917-1965
| monthly
statistics
derived from
daily values.
Per month:
precipitation
sums,
number of
wet/dry days,
extremes, etc)
| Avg.
2000 stations
with
3 numbers per month:
3 * 49 *12*2000=
3.5 million
observations.
| 1 year of work
planner
(including metadata
research)
+ 3 man-year typing
= 4 man-year
| More
recent
data needed
for interpretation
| until
1889
mn.
1848-1858
| periodical
observations
various
stations
| is digitized
| is
digitized
| . | 1910-1973
| monthly
and yearly
observations. Various
stations
| 74
monthly values
3 numbers per month
avg. 200 stations
200*74*12*3=
half
a million
observations.
| 1 year of work
planner
(including metadata
research)
+ 1.5 man-year typing
= 2.5 man-year
| It is not clear
what is
already
digitally
available
|
# For the
labor estimates it is assumed that all numbers are manually keyed into the spreadsheets.
Use of OCR may shorten the estimated time but this needs to be checked at the
start of the project. Estimates are based on experience with comparable projects
within the KNMI Hisklim program.
Post-1970 Indonesian climate
data at BMKG
The table below presents a preliminary inventory of the
post-1970 climate data at BMKG that will be digitized within Didah. A more elaborate
inventory will be produced during the project. PERIOD | DATA | QUANTITY | APPX
MY | 1970 - 2008 | -
Hourly observed air
pressure, temperature,
moisture, etc.
- Batavia/Jakarta
| ~
35 years of hourly data ~
0.5 million obs.
(avg. 7 element/obs)
| 5
MY | 1970-2008 | Monthly
statistics derived
values including: precipitation
sums, number of wet/dry
days, extremes, etc | Avg. 2000 stations with
3
numbers per month ~ 3
million observations | 10
MY |
| 
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