GB/T 35222-2017Specifications for surface meteorological observation—Cloud (English PDF)

2.1 Cloud

A large number of tiny droplets of water suspended in the atmosphere or ice crystals or a mixture of both the visible polymer, and sometimes also contain some larger raindrops, ice particles

And snow crystal, the bottom does not touch the ground.

2.2 Cloudamount

Clouds cover the sky's horizon.

2.3 Cloud high cloudheight

The vertical distance between the cloud bottom and the observatory surface water level.

2.4 Cloud-like cloudtype

According to cloud height, cloud shape and structure characteristics of cloud classification description.

4.1 clouds

According to cloud shape features, structure, color, arrangement, height and accompanying weather phenomena, to determine the cloud (cloud classification see Appendix A,

See Appendix B for various cloud-like features. Record in alphabetical order the clouds in Table A.1. A variety of clouds appear at the same time, the amount of cloud in mind before

Surface, clouds the same amount of time, record order custom.

4.2 Cloudiness

4.2.1

Cloud observation Including the observation of total cloud cover and low cloud cover, the total number of cloud-sheltered sky is recorded as the total cloud cover and the cloud cover of low cloud cover

The number of empty records is low cloudiness. When part of the sky is obstructed by obstacles such as mountains, houses, etc., the amount of cloud is estimated from the sky that is never covered.

If part of the sky is covered by precipitation, this part of the sky is considered shaded by clouds that produce precipitation.