免费获取欧洲ECMWF两年的天气预报数据:

	1000	950	925	900	850	800	700	600	500	400	300	250	200	150	100	70	50	30	20	10	7	5	3	2	1
Divergence
Geopotential
Ozone mass mixing ratio
Potential vorticity
Relative humidity
Specific humidity
Temperature
U velocity
V velocity
Vertical velocity
Vorticity (relative)
	1000	950	925	900	850	800	700	600	500	400	300	250	200	150	100	70	50	30	20	10	7	5	3	2	1

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Surface 地面层：
需要下载如下字段

   10 meter U wind component ；
   10 meter V wind component ；
   2 meter dewpoint temperature ；
   2 meter temperature ；
   Mean sea level pressure ；
   Skin temperature ；
   Surface pressure 。

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Select a date range between 2008-05-01 and 2010-04-30:

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0	3	6	9	12	15	18	21	24	27	30	33	36	39	42
45	48	51	54	57	60	63	66	69	72	75	78	81	84	87
90	93	96	102	108	114	120	126	132	138	144	150	156	162	168
174	180	186	192	198	204	210	216	222	228	234	240

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Select parameters

	10 metre U wind component		10 metre V wind component
	10 metre wind gust		10 metre wind gust in the past 6 hours
	2 metre dewpoint temperature		2 metre temperature
	Boundary layer dissipation		Boundary layer height
	Charnock		Convective available potential energy
	Convective precipitation		Downward UV radiation at the surface
	East-West surface stress		Evaporation
	Forecast albedo		Forecast logarithm of surface roughness for heat
	Forecast surface roughness		Friction velocity
	Geopotential		Gravity wave dissipation
	High cloud cover		Ice surface temperature layer 1
	Ice surface temperature layer 2		Ice surface temperature layer 3
	Ice surface temperature layer 4		Instantaneous X surface stress
	Instantaneous Y surface stress		Instantaneous moisture flux
	Instantaneous surface heat flux		Land-sea mask
	Large-scale precipitation fraction		Latitudinal component of gravity wave stress
	Low cloud cover		Maximum temperature at 2 metres since last 6 hours
	Maximum temperature at 2 metres since previous post-processing		Mean sea level pressure
	Medium cloud cover		Meridional component of gravity wave stress
	Minimum temperature at 2 metres since last 6 hours		Minimum temperature at 2 metres since previous post-processing
	Neutral wind at 10 m x-component		Neutral wind at 10 m y-component
	North-South surface stress		Photosynthetically active radiation at the surface
	Runoff		Sea surface temperature
	Sea-ice cover		Skin reservoir content
	Skin temperature		Snow albedo
	Snow density		Snow depth
	Snow evaporation		Snowfall
	Snowmelt		Soil temperature level 1
	Soil temperature level 2		Soil temperature level 3
	Soil temperature level 4		Stratiform precipitation (Large-scale precipitation)
	Sunshine duration		Surface latent heat flux
	Surface net solar radiation, clear sky		Surface net thermal radiation, clear sky
	Surface pressure		Surface sensible heat flux
	Surface solar radiation		Surface solar radiation downwards
	Surface thermal radiation		Surface thermal radiation downwards
	TOA incident solar radiation		Temperature of snow layer
	Top net solar radiation, clear sky		Top net thermal radiation, clear sky
	Top solar radiation		Top thermal radiation
	Total cloud cover		Total column ice water
	Total column liquid water		Total column ozone
	Total column water		Total column water vapour
	Total precipitation		Vertically integrated moisture divergence
	Volumetric soil water layer 1		Volumetric soil water layer 2
	Volumetric soil water layer 3		Volumetric soil water layer 4

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