-
Notifications
You must be signed in to change notification settings - Fork 0
/
Copy pathretrieve_data_ERA5_nc.py
executable file
·177 lines (141 loc) · 4.02 KB
/
retrieve_data_ERA5_nc.py
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
import cdsapi
import numpy as np
import os.path
import os
import yaml
from yaml.loader import SafeLoader
# ------------------------------------------------------------------------------------------------------------------
def read_namelist(filename):
"""
Read yaml namelist file
Parameters:
filename (str) : path to the namelist file
Returns:
dictionary : dictionary with all the namelist information
"""
with open(filename) as f:
namelist = yaml.load(f, Loader=SafeLoader)
return namelist
def create_workdir(namelist):
"""
Create work directories
Parameters:
namelist (dict): dictionary containing paths and names
"""
os.system('mkdir -p '+namelist['output_dir']+'tmpDIR')
def retrieve_nonaccumulate_data(year, filename):
"""
Retrieve non accumulate variables from ERA5
Parameters:
year(int) : year of interest
filename (str) : name of the output file
"""
c = cdsapi.Client()
c.retrieve(
'reanalysis-era5-single-levels',
{
'product_type': 'reanalysis',
'variable': [
'10m_u_component_of_neutral_wind', '10m_v_component_of_neutral_wind', '2m_dewpoint_temperature',
'2m_temperature', 'geopotential', 'surface_pressure',
],
'year': str(year),
'month': [
'01', '02', '03',
'04', '05', '06',
'07', '08', '09',
'10', '11', '12',
],
'day': [
'01', '02', '03',
'04', '05', '06',
'07', '08', '09',
'10', '11', '12',
'13', '14', '15',
'16', '17', '18',
'19', '20', '21',
'22', '23', '24',
'25', '26', '27',
'28', '29', '30',
'31',
],
'time': [
'00:00', '03:00', '06:00',
'09:00', '12:00', '15:00',
'18:00', '21:00',
],
'area': [
75, -10, 45,
45,
],
'format': 'netcdf',
},
filename)
def retrieve_accumulate_data(year, filename):
"""
Retrieve hourly accumulated variables from ERA5
Parameters:
year(int) : year of interest
filename (str) : name of the output file
"""
c = cdsapi.Client()
c.retrieve(
'reanalysis-era5-single-levels',
{
'product_type': 'reanalysis',
'variable': [
'snowfall', 'surface_solar_radiation_downwards', 'surface_thermal_radiation_downwards',
'total_precipitation',
],
'year': str(year),
'month': [
'01', '02', '03',
'04', '05', '06',
'07', '08', '09',
'10', '11', '12',
],
'day': [
'01', '02', '03',
'04', '05', '06',
'07', '08', '09',
'10', '11', '12',
'13', '14', '15',
'16', '17', '18',
'19', '20', '21',
'22', '23', '24',
'25', '26', '27',
'28', '29', '30',
'31',
],
'time': [
'00:00', '01:00', '02:00', '03:00',
'04:00', '05:00', '06:00', '07:00',
'08:00', '09:00', '10:00', '11:00',
'12:00', '13:00', '14:00', '15:00',
'16:00', '17:00', '18:00', '19:00',
'20:00', '21:00', '22:00', '23:00',
],
'area': [
75, -10, 45,
45,
],
'format': 'netcdf',
},
filename)
# ----------------------------------------------------------------------------------------
# 1 - Read namelist file
namelist = read_namelist('../nam/namelist_retrieve_data_ERA5.yaml')
# 2 - Retrieve non accumulated fields
outnc_nonaccu = namelist['output_dir']+'ERA5_NONACCU_'+str(namelist['year'])+'.nc'
if not os.path.isfile(outnc_nonaccu):
print('File '+outnc_nonaccu+' not found ... retrieving it')
retrieve_nonaccumulate_data(namelist['year'],outnc_nonaccu)
# 3 - Retrieve accumulated fields
outnc_accu = namelist['output_dir']+'ERA5_ACCU_'+str(namelist['year'])+'.nc'
if not os.path.isfile(outnc_accu):
print('File '+outnc_accu+' not found ... retrieving it')
retrieve_accumulate_data(namelist['year'],outnc_accu)
# 4 - Remap to domain of interest
if namelist['remap']:
os.system('cdo remapbil,'+namelist['grid_info']+' '+namelist['output_dir']+'ERA5_ACCU_'+str(namelist['year'])+'.nc '+namelist['output_dir']+'ERA5_ACCU_'+namelist['domain']+'_'+str(namelist['year'])+'.nc')
os.system('cdo remapbil,'+namelist['grid_info']+' '+namelist['output_dir']+'ERA5_NONACCU_'+str(namelist['year'])+'.nc '+namelist['output_dir']+'ERA5_NONACCU_'+namelist['domain']+'_'+str(namelist['year'])+'.nc')