LEAP Data Catalog

time

(time)

object

-0490-01-01 00:00:00 ... 1890-01...

array([cftime.DatetimeProlepticGregorian(-490, 1, 1, 0, 0, 0, 0, has_year_zero=True),
       cftime.DatetimeProlepticGregorian(-486, 1, 1, 0, 0, 0, 0, has_year_zero=True),
       cftime.DatetimeProlepticGregorian(-477, 1, 1, 0, 0, 0, 0, has_year_zero=True),
       ...,
       cftime.DatetimeProlepticGregorian(1883, 8, 27, 0, 0, 0, 0, has_year_zero=True),
       cftime.DatetimeProlepticGregorian(1886, 6, 10, 0, 0, 0, 0, has_year_zero=True),
       cftime.DatetimeProlepticGregorian(1890, 1, 1, 0, 0, 0, 0, has_year_zero=True)],
      dtype=object)

hemi

(nerup)

float64

dask.array<chunksize=(271,), meta=np.ndarray>

long_name :: hemispheric asymmetry (NH/SH) of aerosol spread for tropical eruptions based on ratio of Greenland to Antarctic flux
units :

	Array	Chunk
Bytes	2.12 kiB	2.12 kiB
Shape	(271,)	(271,)
Dask graph	1 chunks in 2 graph layers
Data type	float64 numpy.ndarray

lat

(nerup)

float64

dask.array<chunksize=(271,), meta=np.ndarray>

long_name :: latitude of eruption
units :: degrees_north

	Array	Chunk
Bytes	2.12 kiB	2.12 kiB
Shape	(271,)	(271,)
Dask graph	1 chunks in 2 graph layers
Data type	float64 numpy.ndarray

sigma_ssi

(nerup)

float64

dask.array<chunksize=(271,), meta=np.ndarray>

long_name :: Random uncertainty (1 sigma) in SSI
units :: Tg [S]

	Array	Chunk
Bytes	2.12 kiB	2.12 kiB
Shape	(271,)	(271,)
Dask graph	1 chunks in 2 graph layers
Data type	float64 numpy.ndarray

ssi

(nerup)

float64

dask.array<chunksize=(271,), meta=np.ndarray>

long_name :: volcanic stratospheric sulfur injection of eruption
units :: Tg [S]

	Array	Chunk
Bytes	2.12 kiB	2.12 kiB
Shape	(271,)	(271,)
Dask graph	1 chunks in 2 graph layers
Data type	float64 numpy.ndarray

time

PandasIndex

PandasIndex(CFTimeIndex([-0490-01-01 00:00:00, -0486-01-01 00:00:00, -0477-01-01 00:00:00,
             -0464-01-01 00:00:00, -0433-01-01 00:00:00, -0429-01-01 00:00:00,
             -0425-01-01 00:00:00, -0417-01-01 00:00:00, -0412-01-01 00:00:00,
             -0402-01-01 00:00:00,
             ...
             1835-01-20 00:00:00, 1846-01-01 00:00:00, 1853-04-22 00:00:00,
             1856-09-25 00:00:00, 1861-12-01 00:00:00, 1873-01-08 00:00:00,
             1875-04-01 00:00:00, 1883-08-27 00:00:00, 1886-06-10 00:00:00,
             1890-01-01 00:00:00],
            dtype='object',
            length=271,
            calendar='proleptic_gregorian',
            freq=None))

comment :: Minor update from v 2.0, includes reassignment of eruption region for monor events in 1654, 1414, 1381, 688, 379 and -430. Also, minimum flux threshold adjusted downwards so as to include small Greenland flux for events in 1463, -190 and -430
history :: Created Mon Oct 16 10:31:15 2017
source :: Toohey and Sigl, 2017
title :: Ice core-inferred volcanic stratospheric sulfur injection from 500 BCE to 1900 CE version 2.1

time

(time)

object

-0490-01-01 00:00:00 ... 1890-01...

array([cftime.DatetimeProlepticGregorian(-490, 1, 1, 0, 0, 0, 0, has_year_zero=True),
       cftime.DatetimeProlepticGregorian(-486, 1, 1, 0, 0, 0, 0, has_year_zero=True),
       cftime.DatetimeProlepticGregorian(-477, 1, 1, 0, 0, 0, 0, has_year_zero=True),
       ...,
       cftime.DatetimeProlepticGregorian(1883, 8, 27, 0, 0, 0, 0, has_year_zero=True),
       cftime.DatetimeProlepticGregorian(1886, 6, 10, 0, 0, 0, 0, has_year_zero=True),
       cftime.DatetimeProlepticGregorian(1890, 1, 1, 0, 0, 0, 0, has_year_zero=True)],
      dtype=object)

hemi

(nerup)

float64

dask.array<chunksize=(271,), meta=np.ndarray>

long_name :: hemispheric asymmetry (NH/SH) of aerosol spread for tropical eruptions based on ratio of Greenland to Antarctic flux
units :

	Array	Chunk
Bytes	2.12 kiB	2.12 kiB
Shape	(271,)	(271,)
Dask graph	1 chunks in 2 graph layers
Data type	float64 numpy.ndarray

lat

(nerup)

float64

dask.array<chunksize=(271,), meta=np.ndarray>

long_name :: latitude of eruption
units :: degrees_north

	Array	Chunk
Bytes	2.12 kiB	2.12 kiB
Shape	(271,)	(271,)
Dask graph	1 chunks in 2 graph layers
Data type	float64 numpy.ndarray

sigma_ssi

(nerup)

float64

dask.array<chunksize=(271,), meta=np.ndarray>

long_name :: Random uncertainty (1 sigma) in SSI
units :: Tg [S]

	Array	Chunk
Bytes	2.12 kiB	2.12 kiB
Shape	(271,)	(271,)
Dask graph	1 chunks in 2 graph layers
Data type	float64 numpy.ndarray

ssi

(nerup)

float64

dask.array<chunksize=(271,), meta=np.ndarray>

long_name :: volcanic stratospheric sulfur injection of eruption
units :: Tg [S]

	Array	Chunk
Bytes	2.12 kiB	2.12 kiB
Shape	(271,)	(271,)
Dask graph	1 chunks in 2 graph layers
Data type	float64 numpy.ndarray

time

PandasIndex

PandasIndex(CFTimeIndex([-0490-01-01 00:00:00, -0486-01-01 00:00:00, -0477-01-01 00:00:00,
             -0464-01-01 00:00:00, -0433-01-01 00:00:00, -0429-01-01 00:00:00,
             -0425-01-01 00:00:00, -0417-01-01 00:00:00, -0412-01-01 00:00:00,
             -0402-01-01 00:00:00,
             ...
             1835-01-20 00:00:00, 1846-01-01 00:00:00, 1853-04-22 00:00:00,
             1856-09-25 00:00:00, 1861-12-01 00:00:00, 1873-01-08 00:00:00,
             1875-04-01 00:00:00, 1883-08-27 00:00:00, 1886-06-10 00:00:00,
             1890-01-01 00:00:00],
            dtype='object',
            length=271,
            calendar='proleptic_gregorian',
            freq=None))

comment :: Minor update from v 2.0, includes reassignment of eruption region for monor events in 1654, 1414, 1381, 688, 379 and -430. Also, minimum flux threshold adjusted downwards so as to include small Greenland flux for events in 1463, -190 and -430
history :: Created Mon Oct 16 10:31:15 2017
source :: Toohey and Sigl, 2017
title :: Ice core-inferred volcanic stratospheric sulfur injection from 500 BCE to 1900 CE version 2.1