摘要
利用格尔木、小灶火2个气象站2015-2020年逐日逐时植被草表面温度(简称草温)、气温0 cm地面温度等气象资料,采用数理统计方法分析草温变化特征及其与气象因子间的变化关系。结果表明:(1)格尔木地区年平均草温为6.6℃,东部草温略高于西部;草温月变化呈单峰型曲线,7月草温最高,12月最低;草温日变化呈一谷一峰型曲线,14时草温最高,6~7时最低。(2)格尔木地区草温年较差为32.5℃,年均日较差为38.7℃,春季日较差最大,夏季日较差最小。(3)格尔木地区草温较气温偏高,较,地面温度偏低,草温和气温、地温间均存在显著的正相关关系。(4)晴天少云(阴天多云)时,草温与气温、地温的绝对温差大(小);分析结果为科学利用草面温度数据、加强精细化气象服务、保障农牧业生产等方面提供科技支撑。
Using the meteorological data of grass surface temperature(grass temperature),temperature and 0 cm,ground temperature from 2015 to 2020,the change characteristics of grass temperature and its relationship with meteorological factors.The results show that:(1)The annual average grass temperature in Golmud is 6.6℃,the eastern grass temperature is slightly higher than the west;the grass temperature shows a single peak curve,the highest grass temperature in July and the lowest in December;the grass temperature shows a valley and peak curve,the highest grass temperature at 14 and the lowest at 6~7.(2)The annual difference of grass temperature in Golmud area is 32.5℃,and the average annual daily difference is 38.7℃,with the biggest difference in spring and the smallest difference in summer.(3)Grass temperature is higher than ground temper-ature and lower than ground temperature.There is a significant positive relationship between mild grass temper-ature and ground temperature.(4)In clear days and few clouds(cloudy days and cloudy days),the absolute temperature difference between grass temperature and ground temperature is large(small);the analysis results provide scientifc and technological support for the scientific use of grass surface temperature data,strengthening fine meteorological services,and the guarantee of agriculture and animal husbandry production.
作者
何生录
王发科
张亚珍
梅朵
邓海峰
HE Sheng-lu(Golmud Meteorological Bureau,Qinghai Province,Geermu Qinghai 816099,China)
出处
《青海草业》
2022年第1期58-62,共5页
Qinghai Prataculture
关键词
草面温度
时空分布
气象因子
不同天空状况
格尔木地区
Grass surface temperature
Spatio-temporal distribution
Meteorological factors
Different sky conditions
Golmud area
作者简介
何生录(1979-),男,工程师,主要从事气象资料分析及气象服务工作。E-mail:328681069@qq.com;通讯作者:张亚珍(1977-),女,工程师,主要从事气象服务工作。E-mail:648663297@qq.com。
