Characteristics of mesoscale convection over northwestern Mexico, the Gulf of California, and Baja California Peninsula

Four species of squat lobsters were collected off the northwestern coast of the Baja California Peninsula, Mexico, during an exploratory survey of fishing resources. Janethogalathea californiensis, described from California was previously known from off the west coast of the Baja California Peninsula (two localities) and from the Gulf of California (three localities). Of the three species of Munida collected during the survey, M. tenella is recorded off the west coast of the Baja California Peninsula for the first time. These are the fourth record of M. hispida and the second record of M. quadrispina in western Mexico.

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On some deep-sea Stenheliinae from the Gulf of California and the west coast of the Baja California Peninsula (Mexico): Wellstenhelia euterpoides sp. nov., and Wellstenvalia wellsi gen. et sp. nov. (Copepoda: Harpacticoida: Miraciidae)

Zootaxa ◽

10.11646/zootaxa.5051.1.10 ◽

2021 ◽

Vol 5051 (1) ◽

pp. 117-150

Author(s):

SAMUEL GÓMEZ ◽

JOSÉ ANTONIO CRUZ-BARRAZA

Keyword(s):

West Coast ◽

Deep Sea ◽

Gulf Of California ◽

New Genus ◽

Baja California ◽

Baja California Peninsula ◽

New Genus And Species ◽

The West ◽

Harpacticoid Copepods ◽

One New Species

At present, only 11 species of harpacticoid copepods have been described from the deep sea of the Gulf of California and the west coast of the Baja California Peninsula. These efforts had until recently been focused exclusively on the families Ameiridae Boeck, Argestidae Por, and Rhizothrichidae Por. Preliminary analyses revealed also an important contribution of the subfamily Stenheliinae Brady (Miraciidae Dana) to the overall species richness and diversity of deep-sea benthic copepods from the west coast of the Baja California Peninsula, and the central and southern Gulf of California. One new species of the genus Wellstenhelia Karanovic & Kim, 2014, We. euterpoides sp. nov., and one new genus and species, Wellstenvalia wellsi gen. et sp. nov., are herein described from sediment samples taken at eight sampling stations in the west coast of the Baja California Peninsula and in the central and southern Gulf of California. Wellstenhelia euterpoides sp. nov. seems to be closely related to We. euterpe Karanovic & Kim, 2014 with which it shares the reduced armature complement of the baseoendopod of the female fifth leg. The so far monotypic genus Wellstenvalia gen. nov. was found to be closely related to Muohuysia Özdikmen, 2009 and Wellstenhelia. Some comments on the relationships between the new genus proposed here and other stenheliin genera and species are provided as a contribution towards the monophyly of the subfamily.

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Development of Convective Systems over Baja California during Tropical Cyclone Linda (2003)

Weather and Forecasting ◽

10.1175/waf879.1 ◽

2005 ◽

Vol 20 (5) ◽

pp. 801-811 ◽

Cited By ~ 5

Author(s):

Luis M. Farfán

Keyword(s):

Tropical Cyclone ◽

Gulf Of California ◽

Large Scale ◽

Baja California ◽

Precipitable Water ◽

Sea Breeze ◽

Convective Systems ◽

Early Afternoon ◽

Northwestern Mexico ◽

Western Side

Abstract Characteristics of the life cycle and motion of convective systems that occurred over the Baja California Peninsula were determined from a case study in September of 2003. This note applies data from satellite imagery, regular observations from upper-air and surface networks, and operational analyses. Changes in environmental conditions over northwestern Mexico are documented and these are associated with the development of Tropical Cyclone Linda in the eastern Pacific Ocean. When Linda became a tropical storm and was located several hundred kilometers away to the southwest, a convective outbreak occurred over land. An examination of large-scale conditions indicated that flow from the eastern flank of Linda supplied low- to midlevel moisture. Significant convection is associated with specific thresholds for precipitable water, CAPE, and lifted index. Convective systems initiated in the early afternoon remained active for several hours and provided localized areas of precipitation along the western side of the peninsular mountains. An assessment of all the available surface data was performed to determine regional elements that played a role in the development of these systems. Results include documentation of a sea breeze from the Gulf of California onto the mountain slopes when organized convection was first detected.

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Isopods of the genus Ligia as potential biomonitors of trace metals from the gulf of California and pacific coast of the Baja California peninsula.

Ecotoxicology and Environmental Safety ◽

10.1016/j.ecoenv.2014.11.002 ◽

2015 ◽

Vol 112 ◽

pp. 177-185 ◽

Cited By ~ 19

Author(s):

Jaqueline García-Hernández ◽

Luis A. Hurtado ◽

Germán Leyva-García ◽

Adrián Güido-Moreno ◽

Daniela Aguilera-Márquez ◽

...

Keyword(s):

Trace Metals ◽

Gulf Of California ◽

Baja California ◽

Pacific Coast ◽

Baja California Peninsula

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Distribution and abundance of Sicyonia shrimp in the Gulf of California and western coast of the Baja California Peninsula, Mexico

Regional Studies in Marine Science ◽

10.1016/j.rsma.2020.101381 ◽

2020 ◽

Vol 38 ◽

pp. 101381

Author(s):

Juana López-Martínez ◽

Carlos H. Rábago-Quiroz ◽

Eloísa Herrera-Valdivia ◽

Rufino Morales-Azpeitia ◽

Jesús G. Padilla-Serrato

Keyword(s):

Gulf Of California ◽

Baja California ◽

Baja California Peninsula ◽

Western Coast

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Evolution of the margin of the Gulf of California near Loreto, Baja California Peninsula, Mexico

Geological Society of America Bulletin ◽

10.1130/0016-7606(2002)114<0849:eotmot>2.0.co;2 ◽

2002 ◽

Vol 114 (7) ◽

pp. 849-868 ◽

Cited By ~ 36

Author(s):

Paul J. Umhoefer ◽

Larry Mayer ◽

Rebecca J. Dorsey

Keyword(s):

Gulf Of California ◽

Baja California ◽

Baja California Peninsula

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Influence of Tropical Cyclones on Humidity Patterns over Southern Baja California, Mexico

Monthly Weather Review ◽

10.1175/mwr3356.1 ◽

2007 ◽

Vol 135 (4) ◽

pp. 1208-1224 ◽

Cited By ~ 16

Author(s):

Luis M. Farfán ◽

Ira Fogel

Keyword(s):

Tropical Cyclones ◽

Gulf Of California ◽

Large Scale ◽

Baja California ◽

Deep Convection ◽

Precipitable Water ◽

Operational Model ◽

Western Mexico ◽

Surface Station ◽

Northwestern Mexico

Abstract The influence of tropical cyclone circulations in the distribution of humidity and convection over northwestern Mexico is investigated by analyzing circulations that developed in the eastern Pacific Ocean from 1 July to 21 September 2004. Documented cases having some impact over the Baja California Peninsula include Tropical Storm Blas (13–15 July), Hurricane Frank (23–25 August), Hurricane Howard (2–6 September), and Hurricane Javier (15–20 September). Datasets are derived from geostationary satellite imagery, upper-air and surface station observations, as well as an analysis from an operational model. Emphasis is given to circulations that moved within 800 km of the southern part of the peninsula. The distribution of precipitable water is used to identify distinct peaks during the approach of these circulations and deep convection that occurred for periods of several days over the southern peninsula and Gulf of California. Hurricane Howard is associated with a significant amount of precipitation, while Hurricane Javier made landfall across the central peninsula with a limited impact on the population in the area. An examination of the large-scale environment suggests that advection of humid air from the equatorial Pacific is an important element in sustaining tropical cyclones and convection off the coast of western Mexico.

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Concentración de clorofila a en colonias de Pocillopora verrucosa (Sderactina) durante un blanqueamiento coralino en el Golfo de California, México (1997)

Revista de Biología Tropical ◽

10.15517/rbt.v47i4.19222 ◽

2015 ◽

pp. 677-680

Author(s):

Adrián Munguía-Vega ◽

Héctor Reyes-Bonilla

Keyword(s):

Coral Bleaching ◽

Gulf Of California ◽

Baja California ◽

El Nino ◽

Southern Oscillation ◽

Chlorophyll Concentration ◽

Baja California Peninsula ◽

El Nino Southern Oscillation ◽

Pigment Concentrations ◽

Pocillopora Verrucosa

El Niño-Southern Oscillation 1997-98 significantly elevated sea temperatures in the Gulf of California and caused widespread coral bleaching starting in july 1997. Changes in chlorphyll a concentration by unit of area (cm2) among normal, discolored and totally bleached colonies of the coral Pocillopora verrucosa (=P. elegans) were determined in 27 colonies collected in october, 1997 al Ensenada de Muertos. Baja California peninsula, México (240 03' N), by spectrophotometric determinations. Mean pigment values varied from 2.06 ¡..tg/cm2 to 1.12 ¡..tg/cm2 and 0.09 Ilg/cm2 among normal, decolorated and totally bleached colonies, respectively, although statistically significant differences only appeared between completely bleached and normal corals. The low chlorophyll concentration of the healthy-Iooking ("normal") corals and the lack of differences in pigment concentrations between these and partially bleached corals, indicated that the former had actually suffered a previous loss of pigmentation and may have been recovering when sampled.

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Climate Change and Extreme Temperature Trends in the Baja California Peninsula, Mexico

Air Soil and Water Research ◽

10.1177/11786221211010702 ◽

2021 ◽

Vol 14 ◽

pp. 117862212110107

Author(s):

Polioptro F Martínez-Austria ◽

José Alejandro Jano-Pérez

Keyword(s):

Climate Change ◽

Gulf Of California ◽

General Circulation ◽

Baja California ◽

Extreme Temperature ◽

General Circulation Models ◽

Baja California Peninsula ◽

Temperature Trends ◽

The Pacific ◽

Maximum Temperatures

Climate change is one of the greatest threats that our civilization is facing because increases in extreme temperatures severely affect humans, the economy, and ecosystems. General circulation models, which adequately predict climate change around the world, are less accurate at regional levels. Therefore, trends must be locally assessed, particularly in regions such as the Baja California Peninsula, which is a thin mass of land surrounded by the Pacific Ocean and the Gulf of California. Herein, we discuss extreme temperature trends in the Baja California Peninsula and whether they are statistically significant based on the Spearman’s nonparametric statistical test. For these purposes, 18 weather stations covering the entire region were analyzed, revealing that maximum temperatures for the hottest months are rising at a rate that is consistent with the RCP 8.5 scenario. Changes in minimum temperatures were also analyzed.

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