Hi all,
Hope all is well ,Joana here,
I wonder if you could help with a question, or at least point to someone who can.
I’ve downloaded the following variables from era5 single levels :
erver.retrieve('reanalysis-era5-single-levels',{
"variable": ['10m_u_component_of_wind','10m_v_component_of_wind','10m_wind_gust_since_previous_post_processing'],
"product_type": "reanalysis",
"date": d,
"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'],
"format": "netcdf"},"era5_daily_wind_{day}.nc".format(day=d))
I’ve noticed that for some days, the gust is less than the wind speeds, for example 22 March of 1992 this is what I get for lon=359 and lat=52.75:
date |
time |
gust |
u10 |
v10 |
wind_speed |
isless |
22/03/1992 |
00:00:00 |
8.363686 |
2.185989 |
1.790482 |
2.825663409 |
NO |
22/03/1992 |
01:00:00 |
5.292775 |
0.909042 |
2.067268 |
2.258307849 |
NO |
22/03/1992 |
02:00:00 |
3.599795 |
0.983853 |
2.128776 |
2.345134108 |
NO |
22/03/1992 |
03:00:00 |
3.184772 |
1.860088 |
1.868904 |
2.636802899 |
NO |
22/03/1992 |
04:00:00 |
2.955884 |
3.354589 |
1.22999 |
3.572973938 |
YES |
22/03/1992 |
05:00:00 |
2.59282 |
5.201647 |
0.069027 |
5.20210498 |
YES |
22/03/1992 |
06:00:00 |
2.847359 |
5.788097 |
-0.72596 |
5.833445848 |
YES |
22/03/1992 |
07:00:00 |
11.00181 |
5.741663 |
-1.36949 |
5.902728149 |
NO |
22/03/1992 |
08:00:00 |
11.8049 |
4.867147 |
-2.5812 |
5.509238441 |
NO |
22/03/1992 |
09:00:00 |
11.42013 |
3.493892 |
-4.31111 |
5.549140416 |
NO |
22/03/1992 |
10:00:00 |
10.60784 |
1.120577 |
-4.4595 |
4.59813268 |
NO |
22/03/1992 |
11:00:00 |
12.25807 |
3.023529 |
-3.9659 |
4.986989736 |
NO |
22/03/1992 |
12:00:00 |
12.95196 |
5.26442 |
-4.20962 |
6.740552184 |
NO |
22/03/1992 |
13:00:00 |
14.06352 |
6.197408 |
-4.79626 |
7.83657629 |
NO |
22/03/1992 |
14:00:00 |
14.7857 |
6.271359 |
-4.73859 |
7.860292479 |
NO |
22/03/1992 |
15:00:00 |
14.88501 |
6.457097 |
-4.77857 |
8.03298525 |
NO |
22/03/1992 |
16:00:00 |
14.90606 |
6.641974 |
-4.43182 |
7.984788484 |
NO |
22/03/1992 |
17:00:00 |
13.86686 |
5.997912 |
-3.07557 |
6.740480178 |
NO |
22/03/1992 |
18:00:00 |
12.47643 |
5.832812 |
-2.33363 |
6.282318054 |
NO |
22/03/1992 |
19:00:00 |
11.1031 |
5.781218 |
-1.92614 |
6.093643656 |
NO |
22/03/1992 |
20:00:00 |
10.84462 |
5.782078 |
-1.61322 |
6.00290722 |
NO |
22/03/1992 |
21:00:00 |
10.66309 |
5.738223 |
-1.13192 |
5.848798107 |
NO |
22/03/1992 |
22:00:00 |
10.3875 |
5.359869 |
-0.75441 |
5.412700999 |
NO |
22/03/1992 |
23:00:00 |
10.08232 |
5.487133 |
-0.82591 |
5.548942526 |
NO |
As you see from 04am to 06am the wind gust is less than the wind speed. Is there any problem with the data ?
I am attaching the .xlsx: check_gust_March_22_1992_era5.xlsx
Hope to have some feedback soon
Kind Regards
Joana