ATom: L2 Measurements from the NOAA ToF Chemical Ionization Mass Spectrometer (CIMS)
简介
本数据集提供了美国国家海洋和大气管理局（NOAA）碘离子飞行时间化学电离质谱仪（NOAA CIMS）在 NASA 大气层析成像（ATom）任务的机载观测活动中测得的活性氮和卤素物种的混合比。NOAA CIMS 利用碘离子加合物的形成，通过化学电离质谱法检测气相有机和无机分析物。ATom 的测量对象包括五氧化二氮（N₂O₅）、亚硝酸氯（ClNO₂）、氯气（Cl₂）、甲酸（HCOOH）、硫代甲氢过氧甲酸酯（C₂H₄O₃S）、氯化溴（BrCl）、溴化氰（BrCN）和一氧化溴（BrO）。ATom 在 NASA 的 DC-8 飞机上搭载了大量气体和气溶胶有效载荷，用于对大气进行系统的全球尺度采样，并连续测量 0.2 至 13 公里高度范围内的大气剖面。 2016 年至 2018 年间，四个季节均有航班观测。ATom 项目建立了一个单一的、连续的全球尺度数据集。该综合数据集将用于改进全球大气化学和气候模型中化学活性气体和短寿命气候强迫因子的表征。
摘要
Table 2. Variables in the data files NOAACIMS-BrCl_DC8_YYYYMMDD_R#.ict
Name Units Description
UTC_NOAACIMS seconds seconds since midnight UTC
BrCl_NOAACIMS pptv bromine monochloride volume mixing ratio
Table 3. Variables in the data files NOAACIMS-BrCN_DC8_YYYYMMDD_R#.ict
Name Units Description
UTC_NOAACIMS seconds seconds since midnight UTC
BrCN_NOAACIMS pptv cyanogen bromide volume mixing ratio
Table 4. Variables in the data files NOAACIMS-BrO_DC8_YYYYMMDD_R#.ict
Name Units Description
UTC_NOAACIMS seconds seconds since midnight UTC
BrO_NOAACIMS pptv bromine monoxide volume mixing ratio
Table 5. Variables in the data files NOAACIMS-C2H4O3S_DC8_YYYYMMDD_R#.ict
Name Units Description
UTC_NOAACIMS seconds seconds since midnight UTC
C2H4O3S_NOAACIMS ppt hydroperoxymethyl thioformate volume mixing ratio
Table 6. Variables in the data files NOAACIMS-Cl2_DC8_YYYYMMDD_R#.ict
Name Units Description
UTC_NOAACIMS seconds seconds since midnight UTC
Cl2_NOAACIMS pptv chlorine volume mixing ratio
Table 7. Variables in the data files NOAACIMS-ClNO2_DC8_YYYYMMDD_R#.ict
Name Units Description
UTC_NOAACIMS seconds seconds since midnight UTC
ClNO2_NOAACIMS ppt chloro nitrite volume mixing ratio
Table 8. Variables in the data files NOAACIMS-HCOOH_DC8_YYYYMMDD_R#.ict
Name Units Description
UTC_NOAACIMS seconds seconds since midnight UTC
HCOOH_NOAACIMS pptv formic acid volume mixing ratio
Table 9. Variables in the data files NOAACIMS-N2O5_DC8_YYYYMMDD_R#.ict
Name Units Description
UTC_NOAACIMS seconds seconds since midnight UTC
N2O5_NOAACIMS ppt dinitrogen pentoxide volume mixing ratio
代码
!pip install leafmap
!pip install pandas
!pip install folium
!pip install matplotlib
!pip install mapclassify
import pandas as pd
import leafmap
url = "https://github.com/opengeos/NASA-Earth-Data"
df = pd.read_csv(url, sep="\t")
df
leafmap.nasa_data_login()
results, gdf = leafmap.nasa_data_search(
short_name="NOAA_ToF_CIMS_Instrument_Data_1921",
cloud_hosted=True,
bounding_box=(-180.0, -86.18, 180.0, 82.94),
temporal=("2017-09-28", "2018-05-21"),
count=-1, # use -1 to return all datasets
return_gdf=True,
)
gdf.explore()
