SAFARI 2000 AERONET Ground-based Aerosol Data, Dry Season 2000
气溶胶光学监测网（AERONET）是一个地面气溶胶光学监测网和数据存档系统。作为 SAFARI 2000 旱季飞行活动的一部分，AERONET 于 2000 年 8 月至 9 月在几个地点（见下表）利用日空辐射计对南部非洲地区的柱状积分气溶胶光学特性进行了测量。
AERONET 计划是由 AERONET 和 PHOTON 建立并由 AEROCAN（加拿大太阳光度计网络）和其他机构、研究所和大学合作伙伴大力扩展的地面遥感气溶胶网络的一个包容性联盟。AERONET 得到了美国宇航局地球观测系统的支持，并通过与许多非美国宇航局机构的合作得到了扩展。其目标是评估气溶胶光学特性并验证卫星对气溶胶光学特性的检索。该网络实现了仪器、校准和处理的标准化。网络硬件由国家机构和大学拥有的相同的自动日空扫描光谱辐射计组成。这项合作所产生的数据可提供全球分布的气溶胶光学深度光谱观测数据、反演产品以及地理上不同气溶胶状态下的可降水量。
数据文件包含南部非洲多个站点的气溶胶光学特性数值测量结果。数据文件以 ASCII 文件格式存储，每个站点每年一个文件，采用逗号分隔值（.csv）格式，并带有完整的描述性标题。数据为 2.0 级，即经过云筛选和质量保证。
Header ParameterDescriptionSiteThe site nameLatSite latitude in degreesLongSite longitude in degreesPISite principal investigator(s)His/Her e-mailSite principal investigator(s) email address(es)t0Initial starting point of data period (used with time_offset to plot time more effectively in spreadsheet)Column ParameterDescriptionDateDate of measurementTimeTime of measurement (GMT)Time_offsetTime offset from t0AOT_XXXAerosol optical thickness (unitless) for wavelength channel XXX (-100 = data not available)WaterWater Vapor measurement in centimeters (0 = data not available) (units = cm^3/cm^2 or g/cm^2)Air MassOptical airmass
每个站点的首席研究员负责部署、维护和数据收集。首席研究员希望了解该站点数据的使用情况，并根据 SAFARI 2000 数据政策，在适当的情况下提供共同著作权。
Site NameLatitudeLongitudeYears AvailablePI'sAscension Island, Atlantic Ocean-7.976000-14.4150001999, 2000, 2001Brent Holben and Chuck McClainBethlehem, RSA-28.24800028.3330002000, 2001Brent HolbenEtosha Pan, Namibia-19.17500015.9140002000, 2001Brent HolbenInhaca Island, Mozambique-26.04100032.9050002000Brent HolbenJohanesburg, RSA (Joberg)-26.18600028.0290002000Brent HolbenKaoma, Zambia-14.79300024.7950002000Brent HolbenMaun Tower, Botswana-19.90000023.5500002000Brent HolbenMongu, Zambia-15.25400023.1510001999, 2000, 2001Brent HolbenMwinilunga, Zambia-11.74000024.4310002000Brent HolbenNdola, Zambia-12.99500028.6580002000Brent HolbenSenanga, Zambia-16.10900023.2930002000Brent HolbenSkukuza, RSA-24.99200031.5870001999, 2000, 2001Brent HolbenSkukuza Aeroport, RSA-24.96900031.5930002000Mark HelmlingerSolwezi, Zambia-12.17100026.3630002000Brent HolbenSua Pan, Botswana-20.53300026.0670002000Mark HelmlingerWalvis Bay, RSA-22.65800014.5640002000Jeannette VandenboschZambezi, Zambia-13.53300023.1070002000Brent Holben
!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/raw/main/nasa_earth_data.tsv"
df = pd.read_csv(url, sep="\t")
df
leafmap.nasa_data_login()
results, gdf = leafmap.nasa_data_search(
short_name="AERONET_aerosol_706",
cloud_hosted=True,
#bounding_box=(-165.68, 34.59, -98.1, 71.28),
temporal=("1999-01-01", "2001-12-31"),
count=-1, # use -1 to return all datasets
return_gdf=True,
)
gdf.explore()
#leafmap.nasa_data_download(results[:5], out_dir="data")Holben, B. N., and T. F. Eck. 2004. SAFARI 2000 AERONET Ground-based Aerosol Data, Dry Season 2000. Data set. Available on-line [http://www.daac.ornl.gov] from Oak Ridge National Laboratory Distributed Active Archive Center, Oak Ridge, Tennessee, U.S.A. doi:10.3334/ORNLDAAC/706.
Eck, T. F., B. N. Holben, D. E. Ward, M. M. Mukelabai, O. Dubovik, A. Smirnov, J. S. Schafer, N. C. Hsu, S. J. Piketh, A. Queface, J. Le Roux, R. J. Swap, and I. Slutsker, 2003: Variability of biomass burning aerosol optical characteristics in southern Africa during the SAFARI 2000 dry season campaign and a comparison of single scattering albedo estimates from radiometric measurements. J. Geophys. Res. 108(D13): 8477, doi:10.1029/2002JD002321, 2003.
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