__________________________________________
ClimateMalaysia
Faculty of Forestry, University of
British Columbia
November 15, 2017
_________________________________________
Contents
ClimateMalaysia
is a Google map based web platform for access and visualize climate and forest
type information for historical and future periods. Users can obtain a large
number of climate variables for specific locations while visualizing spatial
patterns of major climate variables or forest types in Malaysia.
The climate data generated in this platform are scale-free
(i.e., location specific) and available for historical (1901-2015) and future
(2011-2100) years and periods. For detail, please refer our recent
paper describing ClimateAP (Wang et al.
2017, DOI: 10.15302/J-FASE-2017172).
1) Annual variables:
Directly calculated variables:
MAT mean
annual temperature (°C),
MWMT mean warmest month temperature (°C),
MCMT
mean coldest month
temperature (°C),
TD temperature
difference between MWMT and MCMT, or continentality (°C),
MAP mean
annual precipitation (mm),
MSP mean
summer (May to Sept.) precipitation (mm),
AHM
annual heat:moisture
index (MAT+10)/(MAP/1000))
Derived variables:
DD<0 (DD_0) degree-days below 0°C, chilling
degree-days
DD>5 (DD5) degree-days above 5°C, growing degree-days
DD<18 (DD_18) degree-days below 18°C, heating
degree-days
DD>18 (DD18) degree-days above 18°C, cooling
degree-days
NFFD the
number of frost-free days
PAS precipitation
as snow (mm) between August in previous year and July
in current year
EMT extreme
minimum temperature over 30 years. For an individual year, the EMT is estimated
for the 30-year normal period where the individual year is centred.
EXT extreme
maximum temperature over 30 years. For an individual year, the EXT is estimated
for the 30-year normal period where the individual year is centred.
Eref Hargreaves
reference evaporation
CMD Hargreaves
climatic moisture deficit
2) Seasonal variables:
Tave_DJF winter (Dec.(prev. yr) - Feb.) mean temperature (°C)
Tave_MAM spring (Mar. - May) mean temperature (°C)
Tave_JJA summer (Jun. - Aug.) mean temperature (°C)
Tave_SON autumn (Sep. - Nov.) mean temperature (°C)
Tmax_DJF winter mean maximum temperature (°C)
Tmax_MAM spring mean maximum temperature (°C)
Tmax_JJA summer mean maximum temperature (°C)
Tmax_SON autumn mean maximum temperature (°C)
Tmin_DJF winter mean minimum temperature (°C)
Tmin_MAM spring mean minimum temperature (°C)
Tmin_JJA summer mean minimum temperature (°C)
Tmin_SON autumn mean minimum temperature (°C)
PPT_DJF winter precipitation (mm)
PPT_MAM spring precipitation (mm)
PPT_JJA summer precipitation (mm)
PPT_SON autumn precipitation (mm)
3) Monthly variables
Tave01 – Tave12 January - December mean temperatures (°C)
Tmax1 – Tmax12 January - December maximum mean
temperatures (°C)
Tmin01 – Tmin12 January - December minimum mean
temperatures (°C)
PPT01 – PPT12 January
- December precipitation (mm)
DD_0_01 – DD_0_12 January - December degree-days below 0°C
DD5_01 – DD5_12 January - December degree-days above 5°C
DD_18_01 – DD_18_12 January
- December degree-days below 18°C
DD18_01 – DD18_12 January
- December degree-days above 18°C
NFFD01 – NFFD12 January - December number of frost-free
days
PAS01 – PAS12 January – December
precipitation as snow
Eref01 – Eref12 January – December Hargreaves reference
evaporation
CMD01 – CMD12 January – December Hargreaves climatic
moisture deficit
|
Serial # |
Class code |
Forest type |
|
1 |
1 |
Sarawak_Peat Swamp Forest |
|
2 |
2 |
Sarawak_Mangrove Forest |
|
3 |
3 |
Sarawak_Hill Dipterocarp Forest (350m-800m) |
|
4 |
4 |
Sabah_Wildlife Reserve |
|
5 |
5 |
Sabah_Virgin Jungle Reserve |
|
6 |
6 |
Sabah_Mangrove Forest Reserve |
|
7 |
7 |
Sabah_Domestic Forest Reserve |
|
8 |
8 |
Sabah_Commercial Forest reserve |
|
9 |
9 |
Sabah_Amenity Forest Reserve |
|
10 |
10 |
Sabah_Protection Forest Reserve |
|
11 |
11 |
PM_ Upper Hill Dipterocarp Forest (800m-1300m) |
|
12 |
12 |
PM_Peat Swamp Forest |
|
13 |
13 |
PM_ Montane Forest (>1300m) |
|
14 |
14 |
PM_Mangrove Forest |
|
15 |
15 |
PM_ Lower Dipterocarp Forest (150m-350m) |
|
16 |
16 |
Sarawak_Montane Forest (>1300m) |
|
17 |
21 |
Sabah_Virgin Jungle Reserve;
Sabah_Commercial Forest reserve |
|
18 |
25 |
Sabah_Commercial Forest reserve; Sabah_Protection Forest Reserve |
|
19 |
26 |
Sabah_Commercial Forest reserve;
Sarawak_Montane Forest (>1300m) |
|
20 |
27 |
PM_Peat Swamp Forest PM_ Lower Dipterocarp Forest (150m-350m) |
|
21 |
28 |
PM_Mangrove Forest PM_ Lower Dipterocarp Forest (150m-350m) |
|
22 |
29 |
SarawakLower Dipterocarp Forest (150m-350m) PM_Lower Dipterocarp Forest
(150m-350m) PM_* |
|
23 |
30 |
SarawakInland Forest
(<150m) PM_Inland Forest (<150m) PM_Inland Forest (<150m) |
|
24 |
32 |
Sarawak_Peat Swamp Forest Sarawak_Inland Forest (<150m) PM_Inland Forest (<150m)PM_Inland* |
|
25 |
33 |
SarawakMangrove ForestSarawakInland Forest (<150m) PM_Inland Forest
(<150m)PM_Inland Fo* |
Wang, T., G. Wang, J.L. Innes, B.
Seely, B. Chen, 2017. ClimateAP: an application for dynamic local downscaling
of historical and future climate data in Asia Pacific. Frontiers of
Agricultural Science and Engineering.
Funding for this
study was provided by the APFNet (www.apfnet.cn).